VARIoT IoT vulnerabilities database

im-switch before 11.4-46.1 in Fedora Core 2 allows local users to overwrite arbitrary files via a symlink attack on the imswitcher[PID] temporary file. It is reported that im-switch is prone to a local insecure temporary file handling symbolic link vulnerability. The im-switch utility will write to this temporary file before verifying its existence; this would facilitate a symbolic link attack. An attacker may exploit this issue to corrupt arbitrary files. This corruption may potentially result in the elevation of privileges, or in a system wide denial of service. Fedora Core is a Linux system distributed by RedHat. \'\'/usr/bin/im-switch\'\'use \"/tmp/imswitcher$$\" as a temporary file, but because the /tmp/ directory is writable and $$(PID) can be cloud-registered, Therefore, attackers can use symbolic links to destroy important files in the system, which may cause privilege escalation

Buffer overflow in Microsoft Internet Information Server (IIS) 4.0 allows local users to execute arbitrary code via the redirect function. A buffer overflow vulnerability exists in the Portable Operating System Interface for UNIX (POSIX) subsystem for Windows NT 4.0 and Windows 2000. This vulnerability may be exploited by a local authenticated user to gain full system privileges. The Microsoft Windows 2000 Utility Manager allows authenticated local users to launch applications with SYSTEM privileges. Microsoft Windows contains a remote code execution vulnerability in the way that the Windows Shell launches applications. An remote attacker could exploit this vulnerability to execute arbitrary code if they could trick a user into visiting a malicious website. Microsoft IIS 4.0 is reported prone to a buffer overflow vulnerability when handling redirects. This could lead to complete compromise of an affected computer. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 National Cyber Alert System Technical Cyber Security Alert TA04-196A Multiple Vulnerabilities in Microsoft Windows Components and Outlook Express Original release date: July 14, 2004 Last revised: -- Source: US-CERT Systems Affected * Microsoft Windows Systems Overview Microsoft has released a Security Bulletin Summary for July, 2004. This summary includes several bulletins that address vulnerabilities in various Windows applications and components. Details of the vulnerabilities and their impacts are provided below. I. Description The table below provides a reference between Microsoft's Security Bulletins and the related US-CERT Vulnerability Notes. More information related to the vulnerabilities is available in these documents. The attacker would have to convince a victim to view an HTML document (web page, HTML email) or click on a crafted URI link. Exploitation of VU#869640 can lead to a denial-of-service condition against Outlook Express. III. Solution Apply a patch Microsoft has provided the patches for these vulnerabilities in the Security Bulletins and on Windows Update. Do not follow unsolicited links It is generally a good practice not to click on unsolicited URLs received in email, instant messages, web forums, or Internet relay chat (IRC) channels. However, this practice does not always prevent exploitation of these types vulnerabilities. For example, a trusted web site could be compromised and modified to deliver exploit script to unsuspecting clients. Maintain updated anti-virus software Anti-virus software with updated virus definitions may identify and prevent some exploit attempts, but variations of exploits or attack vectors may not be detected. Do not rely solely on anti-virus software to defend against these vulnerabilities. More information about viruses and anti-virus vendors is available on the US-CERT Computer Virus Resources page. Appendix A. Vendor Information Specific information about these issue are available in the Security Bulletin Summary for July, 2004 and the US-CERT Vulnerability Notes. Appendix B. References * Microsoft's Security Bulletin Summary for July, 2004 - <http://www.microsoft.com/technet/security/bulletin/ms04-jul.mspx> * US-CERT Vulnerability Note VU#106324 - <http://www.kb.cert.org/vuls/id/106324> * US-CERT Vulnerability Note VU#187196 - <http://www.kb.cert.org/vuls/id/187196> * US-CERT Vulnerability Note VU#920060 - <http://www.kb.cert.org/vuls/id/920060> * US-CERT Vulnerability Note VU#228028 - <http://www.kb.cert.org/vuls/id/228028> * US-CERT Vulnerability Note VU#717748 - <http://www.kb.cert.org/vuls/id/717748> * US-CERT Vulnerability Note VU#647436 - <http://www.kb.cert.org/vuls/id/647436> * US-CERT Vulnerability Note VU#868580 - <http://www.kb.cert.org/vuls/id/868580> * US-CERT Vulnerability Note VU#869640 - <http://www.kb.cert.org/vuls/id/869640> * Increase Your Browsing and E-Mail Safety - <http://www.microsoft.com/security/incident/settings.mspx> * Working with Internet Explorer 6 Security Settings - <http://www.microsoft.com/windows/ie/using/howto/security/settings .mspx> _________________________________________________________________ This alert was created by Jason A. Rafail. Feedback can be directed to the Vulnerability Note authors: Jason A. Rafail, Jeff P. Lanza, Chad R. Dougherty, Damon G. Morda, and Art Manion. _________________________________________________________________ This document is available from: <http://www.us-cert.gov/cas/techalerts/TA04-196A.html> _________________________________________________________________ Copyright 2004 Carnegie Mellon University. Terms of use: <http://www.us-cert.gov/legal.html> _________________________________________________________________ Revision History July 14, 2004: Initial release Last updated July 14, 2004 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQFA9ZD4XlvNRxAkFWARApJoAJ9kLfHwh9rjM39LkWpRYYkPDngD+QCcDj6Q P8VLUzmOQoMFj+903rIsKHU= =4I7x -----END PGP SIGNATURE-----

Floating point information leak in the context switch code for Linux 2.4.x only checks the MFH bit but does not verify the FPH owner, which allows local users to read register values of other processes by setting the MFH bit. ------------ This vulnerability information is a summary of multiple vulnerabilities released at the same time. Please note that the contents of vulnerability information other than the title are included. ------------ Linux In the kernel, context switch code is used to switch computation processing between threads. Also, ia64 In architecture, FPH ( High-order register of floating point register ) Change information to user mask (UM) In the register MFH Store in register. this FPH If the register is changed, MFH A bit is set in the register. Local attackers who exploit this issue MFH It is possible to read the register values of other processes by creating a program that sets the bits. Also, ia64 In architecture Linux Kernel 2.4.x In certain circumstances, a local attacker could cause a kernel panic, resulting in a system out of service (CAN-2004-0447) Has been reported, but it is unknown at present. still, ia64 Other architectures are not affected by these issues.Please refer to the “Overview” for the impact of this vulnerability. The Linux kernel is reported prone to a data-disclosure vulnerability. Reportedly, this issue may permit a malicious executable to access the contents of floating-point registers that belong to another process. Linux is an open source operating system. Opened by (Arun Sharma) on 2004-05-28 17:46 Description of problem: Linux 2.4.x and the SLES9/ia64 kernels have a floating point leak. Version-Release number of selected component (if applicable): 2.4.21-12.EL. How reproducible: Run N (= number of cpus) copies of the program secret and one copy of the program check. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - -------------------------------------------------------------------------- Debian Security Advisory DSA 1069-1 security@debian.org http://www.debian.org/security/ Martin Schulze, Dann Frazier May 20th, 2006 http://www.debian.org/security/faq - -------------------------------------------------------------------------- Package : kernel-source-2.4.18,kernel-image-2.4.18-1-alpha,kernel-image-2.4.18-1-i386,kernel-image-2.4.18-hppa,kernel-image-2.4.18-powerpc-xfs,kernel-patch-2.4.18-powerpc,kernel-patch-benh Vulnerability : several Problem-Type : local/remote Debian-specific: no CVE IDs : CVE-2004-0427 CVE-2005-0489 CVE-2004-0394 CVE-2004-0447 CVE-2004-0554 CVE-2004-0565 CVE-2004-0685 CVE-2005-0001 CVE-2004-0883 CVE-2004-0949 CVE-2004-1016 CVE-2004-1333 CVE-2004-0997 CVE-2004-1335 CVE-2004-1017 CVE-2005-0124 CVE-2005-0528 CVE-2003-0984 CVE-2004-1070 CVE-2004-1071 CVE-2004-1072 CVE-2004-1073 CVE-2004-1074 CVE-2004-0138 CVE-2004-1068 CVE-2004-1234 CVE-2005-0003 CVE-2004-1235 CVE-2005-0504 CVE-2005-0384 CVE-2005-0135 Several local and remote vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or the execution of arbitrary code. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2004-0427 A local denial of service vulnerability in do_fork() has been found. CVE-2005-0489 A local denial of service vulnerability in proc memory handling has been found. CVE-2004-0394 A buffer overflow in the panic handling code has been found. CVE-2004-0447 A local denial of service vulnerability through a null pointer dereference in the IA64 process handling code has been found. CVE-2004-0554 A local denial of service vulnerability through an infinite loop in the signal handler code has been found. CVE-2004-0685 Unsafe use of copy_to_user in USB drivers may disclose sensitive information. CVE-2005-0001 A race condition in the i386 page fault handler may allow privilege escalation. CVE-2004-0883 Multiple vulnerabilities in the SMB filesystem code may allow denial of service of information disclosure. CVE-2004-0949 An information leak discovered in the SMB filesystem code. CVE-2004-1016 A local denial of service vulnerability has been found in the SCM layer. CVE-2004-1333 An integer overflow in the terminal code may allow a local denial of service vulnerability. CVE-2004-0997 A local privilege escalation in the MIPS assembly code has been found. CVE-2004-1335 A memory leak in the ip_options_get() function may lead to denial of service. CVE-2004-1017 Multiple overflows exist in the io_edgeport driver which might be usable as a denial of service attack vector. CVE-2005-0124 Bryan Fulton reported a bounds checking bug in the coda_pioctl function which may allow local users to execute arbitrary code or trigger a denial of service attack. CVE-2005-0528 A local privilege escalation in the mremap function has been found CVE-2003-0984 Inproper initialization of the RTC may disclose information. CVE-2004-1070 Insufficient input sanitising in the load_elf_binary() function may lead to privilege escalation. CVE-2004-1071 Incorrect error handling in the binfmt_elf loader may lead to privilege escalation. CVE-2004-1072 A buffer overflow in the binfmt_elf loader may lead to privilege escalation or denial of service. CVE-2004-1073 The open_exec function may disclose information. CVE-2004-1074 The binfmt code is vulnerable to denial of service through malformed a.out binaries. CVE-2004-0138 A denial of service vulnerability in the ELF loader has been found. CVE-2004-1068 A programming error in the unix_dgram_recvmsg() function may lead to privilege escalation. CVE-2004-1234 The ELF loader is vulnerable to denial of service through malformed binaries. CVE-2005-0003 Crafted ELF binaries may lead to privilege escalation, due to insufficient checking of overlapping memory regions. CVE-2004-1235 A race condition in the load_elf_library() and binfmt_aout() functions may allow privilege escalation. CVE-2005-0504 An integer overflow in the Moxa driver may lead to privilege escalation. CVE-2005-0384 A remote denial of service vulnerability has been found in the PPP driver. The following matrix explains which kernel version for which architecture fix the problems mentioned above: Debian 3.0 (woody) Source 2.4.18-14.4 Alpha architecture 2.4.18-15woody1 Intel IA-32 architecture 2.4.18-13.2 HP Precision architecture 62.4 PowerPC architecture 2.4.18-1woody6 PowerPC architecture/XFS 20020329woody1 PowerPC architecture/benh 20020304woody1 Sun Sparc architecture 22woody1 We recommend that you upgrade your kernel package immediately and reboot the machine. Upgrade Instructions - -------------------- wget url will fetch the file for you dpkg -i file.deb will install the referenced file. If you are using the apt-get package manager, use the line for sources.list as given below: apt-get update will update the internal database apt-get dist-upgrade will install corrected packages You may use an automated update by adding the resources from the footer to the proper configuration. Debian GNU/Linux 3.0 alias woody - -------------------------------- These files will probably be moved into the stable distribution on its next update. - --------------------------------------------------------------------------------- For apt-get: deb http://security.debian.org/ stable/updates main For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main Mailing list: debian-security-announce@lists.debian.org Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (GNU/Linux) iD8DBQFEb9YGXm3vHE4uyloRAkhXAJ0e1RmUxVZSbQICFa/j07oKPfWRVwCeMrhj wYGegwosZg6xi3oI77opLQY= =eu/T -----END PGP SIGNATURE----- _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/ . Debian GNU/Linux 3.0 alias woody - -------------------------------- Source archives: http://security.debian.org/pool/updates/main/k/kernel-image-sparc-2.4/kernel-image-sparc-2.4_26woody1.dsc Size/MD5 checksum: 692 27f44a0eec5837b0b01d26c6cff392be http://security.debian.org/pool/updates/main/k/kernel-image-sparc-2.4/kernel-image-sparc-2.4_26woody1.tar.gz Size/MD5 checksum: 27768 6c719a6343c9ea0dad44a736b3842504 http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.19-mips/kernel-patch-2.4.19-mips_2.4.19-0.020911.1.woody5.dsc Size/MD5 checksum: 792 d7c89c90fad77944ca1c5a18327f31dd http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.19-mips/kernel-patch-2.4.19-mips_2.4.19-0.020911.1.woody5.tar.gz Size/MD5 checksum: 1013866 21b4b677a7a319442c8fe8a4c72eb4c2 http://security.debian.org/pool/updates/main/k/kernel-source-2.4.19/kernel-source-2.4.19_2.4.19-4.woody3.dsc Size/MD5 checksum: 672 4c353db091e8edc4395e46cf8d39ec42 http://security.debian.org/pool/updates/main/k/kernel-source-2.4.19/kernel-source-2.4.19_2.4.19-4.woody3.diff.gz Size/MD5 checksum: 71071 7012adde9ba9a573e1be66f0d258721a http://security.debian.org/pool/updates/main/k/kernel-source-2.4.19/kernel-source-2.4.19_2.4.19.orig.tar.gz Size/MD5 checksum: 32000211 237896fbb45ae652cc9c5cecc9b746da Architecture independent components: http://security.debian.org/pool/updates/main/k/kernel-image-sparc-2.4/kernel-headers-2.4.18-sparc_22woody1_all.deb Size/MD5 checksum: 1521850 75d23c7c54094b1d25d3b708fd644407 http://security.debian.org/pool/updates/main/k/kernel-image-sparc-2.4/kernel-headers-2.4.19-sparc_26woody1_all.deb Size/MD5 checksum: 1547874 c6881b25e3a5967e0f6f9c351fb88962 http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.19-mips/kernel-patch-2.4.19-mips_2.4.19-0.020911.1.woody5_all.deb Size/MD5 checksum: 1014564 0e89364c2816f5f4519256a8ea367ab6 http://security.debian.org/pool/updates/main/k/kernel-source-2.4.19/kernel-doc-2.4.19_2.4.19-4.woody3_all.deb Size/MD5 checksum: 1785490 c66cef9e87d9a89caeee02af31e3c96d http://security.debian.org/pool/updates/main/k/kernel-source-2.4.19/kernel-source-2.4.19_2.4.19-4.woody3_all.deb Size/MD5 checksum: 25902158 321403201a198371fd55c9b8ac4583f7 Sun Sparc architecture: http://security.debian.org/pool/updates/main/k/kernel-image-sparc-2.4/kernel-image-2.4.18-sun4u_22woody1_sparc.deb Size/MD5 checksum: 3923058 db7bbd997410667bec4ac713d81d60ea http://security.debian.org/pool/updates/main/k/kernel-image-sparc-2.4/kernel-image-2.4.18-sun4u-smp_22woody1_sparc.deb Size/MD5 checksum: 4044796 106fcb86485531d96b4fdada61b71405 http://security.debian.org/pool/updates/main/k/kernel-image-sparc-2.4/kernel-image-2.4.19-sun4u_26woody1_sparc.deb Size/MD5 checksum: 3831424 347b0c290989f0cc99f3b336c156f61d http://security.debian.org/pool/updates/main/k/kernel-image-sparc-2.4/kernel-image-2.4.19-sun4u-smp_26woody1_sparc.deb Size/MD5 checksum: 3952220 f7dd8326c0ae0b0dee7c46e24023d0a2 Big endian MIPS architecture: http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.19-mips/kernel-headers-2.4.19_2.4.19-0.020911.1.woody5_mips.deb Size/MD5 checksum: 3890804 7348a8cd3961190aa2a19f562c96fe2f http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.19-mips/kernel-image-2.4.19-r4k-ip22_2.4.19-0.020911.1.woody5_mips.deb Size/MD5 checksum: 2080618 d52d00e7097ae0c8f4ccb6f34656361d http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.19-mips/kernel-image-2.4.19-r5k-ip22_2.4.19-0.020911.1.woody5_mips.deb Size/MD5 checksum: 2080830 db7141d3c0d86a43659176f974599cc2 http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.19-mips/mips-tools_2.4.19-0.020911.1.woody5_mips.deb Size/MD5 checksum: 15816 c31e3b72d6eac6f3f99f75ea838e0bf9 These files will probably be moved into the stable distribution on its next update

Argument injection vulnerability in the SSH URI handler for Safari on Mac OS 10.3.3 and earlier allows remote attackers to (1) execute arbitrary code via the ProxyCommand option or (2) conduct port forwarding via the -R option. apple's Apple Mac OS X Exists in a vulnerability in inserting or modifying arguments.None

Zoom X3 ADSL modem has a terminal running on port 254 that can be accessed using the default HTML management password, even if the password has been changed for the HTTP interface, which could allow remote attackers to gain unauthorized access. Zoom Model 5560 X3 is an EHTERNET ADSL modem. The Zoom Model 5560 X3 has a default backdoor account, and remote attackers can use this vulnerability to control this device. Attackers can use this vulnerability to control the device. A remote attacker can gain unauthorized access to the vulnerable appliance and then carry out other attacks against the users of the network

Multiple unknown vulnerabilities in Linux kernel 2.6 allow local users to gain privileges or access kernel memory, a different set of vulnerabilities than those identified in CVE-2004-0495, as found by the Sparse source code checking tool. mandrakesoft of mandrake multi network firewall Unspecified vulnerabilities exist in products from multiple vendors.None. These vulnerabilities were referenced in a SuSe advisory, however, further details are not currently available. This BID will be updated or retired as more information becomes available. It is reported that these issues present themselves in Linux kernel 2.6. The leak did not provide specifics. -----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SUSE Security Announcement Package: kernel Announcement-ID: SUSE-SA:2004:020 Date: Tuesday, Jul 2nd 2004 18:00 MEST Affected products: 8.0, 8.1, 8.2, 9.0, 9.1 SUSE Linux Database Server, SUSE eMail Server III, 3.1 SUSE Linux Enterprise Server 7, 8 SUSE Linux Firewall on CD/Admin host SUSE Linux Connectivity Server SUSE Linux Office Server Vulnerability Type: local privilege escalation Severity (1-10): 6 SUSE default package: yes Cross References: CAN-2004-0495 CAN-2004-0496 CAN-2004-0497 CAN-2004-0535 CAN-2004-0626 Content of this advisory: 1) security vulnerability resolved: - chown: users can change the group affiliation of arbitrary files to the group they belong to - missing DAC check in chown(2): local privilege escalation - overflow with signals: local denial-of-service - pss, mpu401 sound driver: read/write to complete memory - airo driver: read/write to complete memory - ALSA: copy_from_user/copy_to_user confused - acpi_asus: read from random memory - decnet: write to memory without checking - e1000 driver: read complete memory problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - icecast - sitecopy - cadaver - OpenOffice_org - tripwire - postgresql* - mod_proxy - freeswan - ipsec-tools - less - libpng - pavuk - XFree86* - kdebase3 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information Multiple security vulnerabilities are being addressed with this security update of the Linux kernel. Kernel memory access vulnerabilities are fixed in the e1000, decnet, acpi_asus, alsa, airo/WLAN, pss and mpu401 drivers. Missing Discretionary Access Control (DAC) checks in the chown(2) system call allow an attacker with a local account to change the group ownership of arbitrary files, which leads to root privileges on affected systems. An interesting variant of the missing checks is that the ownership of files in the /proc filesystem can be altered, while the changed ownership still does not allow the files to be accessed as a non-root user for to be able to exploit the vulnerability. Systems that are based on a version 2.4 kernel are not vulnerable to the /proc weakness, and exploitation of the weakness requires the use of the kernel NFS server (knfsd). If the knfsd NFS server is not activated (it is off by default), the vulnerability is not exposed. The only network-related vulnerability fixed with the kernel updates that are subject to this announcement affect the SUSE Linux 9.1 distribution only, as it is based on a 2.6 kernel. Found and reported to bugtraq by Adam Osuchowski and Tomasz Dubinski, the vulnerability allows a remote attacker to send a specially crafted TCP packet to a vulnerable system, causing that system to stall if it makes use of TCP option matching netfilter rules. In some rare configurations of the SUSE Linux 9.1 distribution, some users have experienced stalling systems during system startup. SPECIAL INSTALL INSTRUCTIONS: ============================== For the impatient: Run YOU (Yast2 Online Update, command "yast2 online_update" as root) to install the updates (semi) automatically, if you have a SUSE Linux 8.1 and newer system. For those who wish to install their kernel updates manually and for those who use a SUSE Linux 8.0 system: The following paragraphs will guide you through the installation process in a step-by-step fashion. The character sequence "****" marks the beginning of a new paragraph. In some cases, the steps outlined in a particular paragraph may or may not be applicable to your situation. Therefore, please make sure to read through all of the steps below before attempting any of these procedures. All of the commands that need to be executed are required to be run as the superuser (root). Each step relies on the steps before it to complete successfully. **** Step 1: Determine the needed kernel type Please use the following command to find the kernel type that is installed on your system: rpm -qf /boot/vmlinuz Following are the possible kernel types (disregard the version and build number following the name separated by the "-" character) k_deflt # default kernel, good for most systems. k_i386 # kernel for older processors and chipsets k_athlon # kernel made specifically for AMD Athlon(tm) family processors k_psmp # kernel for Pentium-I dual processor systems k_smp # kernel for SMP systems (Pentium-II and above) k_smp4G # kernel for SMP systems which supports a maximum of 4G of RAM kernel-64k-pagesize kernel-bigsmp kernel-default kernel-smp **** Step 2: Download the package for your system Please download the kernel RPM package for your distribution with the name as indicated by Step 1. The list of all kernel rpm packages is appended below. Note: The kernel-source package does not contain a binary kernel in bootable form. Instead, it contains the sources that the binary kernel rpm packages are created from. It can be used by administrators who have decided to build their own kernel. Since the kernel-source.rpm is an installable (compiled) package that contains sources for the linux kernel, it is not the source RPM for the kernel RPM binary packages. The kernel RPM binary packages for the distributions can be found at the locations below ftp://ftp.suse.com/pub/suse/i386/update/. 8.0/images/ 8.1/rpm/i586 8.2/rpm/i586 9.0/rpm/i586 9.1/rpm/i586 After downloading the kernel RPM package for your system, you should verify the authenticity of the kernel rpm package using the methods as listed in section 3) of each SUSE Security Announcement. **** Step 3: Installing your kernel rpm package Install the rpm package that you have downloaded in Steps 3 or 4 with the command rpm -Uhv --nodeps --force <K_FILE.RPM> where <K_FILE.RPM> is the name of the rpm package that you downloaded. Warning: After performing this step, your system will likely not be able to boot if the following steps have not been fully followed. If you run SUSE LINUX 8.1 and haven't applied the kernel update (SUSE-SA:2003:034), AND you are using the freeswan package, you also need to update the freeswan rpm as a dependency as offered by YOU (YaST Online Update). The package can be downloaded from ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/ **** Step 4: configuring and creating the initrd The initrd is a ramdisk that is loaded into the memory of your system together with the kernel boot image by the bootloader. The kernel uses the content of this ramdisk to execute commands that must be run before the kernel can mount its actual root filesystem. It is usually used to initialize SCSI drivers or NIC drivers for diskless operation. The variable INITRD_MODULES in /etc/sysconfig/kernel determines which kernel modules will be loaded in the initrd before the kernel has mounted its actual root filesystem. The variable should contain your SCSI adapter (if any) or filesystem driver modules. With the installation of the new kernel, the initrd has to be re-packed with the update kernel modules. Please run the command mk_initrd as root to create a new init ramdisk (initrd) for your system. On SuSE Linux 8.1 and later, this is done automatically when the RPM is installed. **** Step 5: bootloader If you run a SUSE LINUX 8.x, SLES8, or SUSE LINUX 9.x system, there are two options: Depending on your software configuration, you have either the lilo bootloader or the grub bootloader installed and initialized on your system. The grub bootloader does not require any further actions to be performed after the new kernel images have been moved in place by the rpm Update command. If you have a lilo bootloader installed and initialized, then the lilo program must be run as root. Use the command grep LOADER_TYPE /etc/sysconfig/bootloader to find out which boot loader is configured. If it is lilo, then you must run the lilo command as root. If grub is listed, then your system does not require any bootloader initialization. Warning: An improperly installed bootloader may render your system unbootable. **** Step 6: reboot If all of the steps above have been successfully completed on your system, then the new kernel including the kernel modules and the initrd should be ready to boot. The system needs to be rebooted for the changes to become active. Please make sure that all steps have completed, then reboot using the command shutdown -r now or init 6 Your system should now shut down and reboot with the new kernel. There is no workaround known. Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement. Then, install the package using the command "rpm -Fhv file.rpm" to apply the update. Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web. x86 Platform: SUSE Linux 9.1: ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-default-2.6.5-7.95.i586.rpm 800418d3dddf6d3b83925f562842205a ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-smp-2.6.5-7.95.i586.rpm 0cb990b159e10685bb29b76d312ddd25 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-bigsmp-2.6.5-7.95.i586.rpm 7446bb70f52bce57a914066be4ed8e45 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-bigsmp-2.6.5-7.95.i586.rpm 7446bb70f52bce57a914066be4ed8e45 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-source-2.6.5-7.95.i586.rpm ede031495ee19d8b6eca1873e7155332 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/kernel-default-2.6.5-7.95.nosrc.rpm 620ef40226fec31a773397cf3051bf36 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/kernel-smp-2.6.5-7.95.nosrc.rpm 9b61b5a70b304f5554cb18a6bae5b5fd ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/kernel-bigsmp-2.6.5-7.95.nosrc.rpm 227c85280ee17a66c8590fe1bb14c596 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/kernel-source-2.6.5-7.95.src.rpm 895fee3033de0810ff1173ce8ee87936 SUSE Linux 9.0: ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_deflt-2.4.21-231.i586.rpm 48be395b96329909486ae3a5152348fa ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_athlon-2.4.21-231.i586.rpm 4cd322b4f511d5fe4c483ed28a82097e ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_smp-2.4.21-231.i586.rpm 262e33cebf1b0d35fb6d3235c9ab8815 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_smp4G-2.4.21-231.i586.rpm 8d81370f90736b12aa71b9c744f6e0e2 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_um-2.4.21-231.i586.rpm bc59c838c84ba318dc4d24da08a3022e ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/kernel-source-2.4.21-231.i586.rpm f9586ba982e0398c3e48871955b661aa source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_deflt-2.4.21-231.src.rpm 18673b0bf347fe9557d4e67ca02000c0 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_athlon-2.4.21-231.src.rpm 71496daac44196b0e0a3836ee6a3b4ed ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_smp-2.4.21-231.src.rpm 7c208e9e3f7be1a68c3c8457eb2cafc4 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_smp4G-2.4.21-231.src.rpm b77863c863aaf4b931bff263220e6ec9 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_um-2.4.21-231.src.rpm bed7e964e22c5e5d2f5e7a5e3816dde4 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/kernel-source-2.4.21-231.src.rpm 6b5137bf379fbfc861441151039575da SUSE Linux 8.2: ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_deflt-2.4.20-115.i586.rpm 50d261b44616f9145a0dc16df501a504 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_athlon-2.4.20-115.i586.rpm 10095854c0bdae20991d90b822352e14 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_smp-2.4.20-115.i586.rpm a2ef7cfb0e62ad955dda2b0574eb3150 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_psmp-2.4.20-115.i586.rpm 1d2b0d0e2c7998685ed04c24e593b196 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/kernel-source-2.4.20.SuSE-115.i586.rpm d8bf98c46ba5313db286d5706f7fb3b8 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_deflt-2.4.20-115.src.rpm e13a7b4c2b185cfeb991c31607f79ccb ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_athlon-2.4.20-115.src.rpm 0e2f2cf20e7d7a20f3e50b245105df61 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_smp-2.4.20-115.src.rpm 6cfac2914d3827ec562ff9d6be29c566 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_psmp-2.4.20-115.src.rpm afd29843aa69d805ef5f25d39ecd0e7f ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/kernel-source-2.4.20.SuSE-115.src.rpm 098a1400a48404931acb8b3eb2e821fb SUSE Linux 8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_deflt-2.4.21-231.i586.rpm 3bdaa593d09a7cbff632a2c4446d5603 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_athlon-2.4.21-231.i586.rpm ba60d0b2b6d3bc9c38b4e8b3859e1586 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_smp-2.4.21-231.i586.rpm ffa8983669004826a0cbedbe34dced76 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_psmp-2.4.21-231.i586.rpm 25174fd007f5a39ee0342dd6f18f2eaa ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/kernel-source-2.4.21-231.i586.rpm 10837fa561cd5104e55d48e46c837764 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_deflt-2.4.21-231.src.rpm c37e8b87819602e77b14206affef00fa ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_athlon-2.4.21-231.src.rpm 7be68a677db5a65be1a46ec194b35497 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_smp-2.4.21-231.src.rpm 8e4b7d5a6bb81da5a00971cdcc4ec641 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_psmp-2.4.21-231.src.rpm d8ba1db81a9b517f867c970e4fc443a7 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/kernel-source-2.4.21-231.src.rpm 96a0a9242d066083c7bff8e0f70b7bbe SUSE Linux 8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_deflt-2.4.18-303.i386.rpm ec1e53b3812c0c0bd3681435d69fb134 ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_smp-2.4.18-303.i386.rpm 583164e52019ae090fd47e425c2a933e ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_psmp-2.4.18-303.i386.rpm 9ac8983abef05697d75f3117e37e5f18 ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_i386-2.4.18-303.i386.rpm 4932c4d6a42fc9be02013f398ab5bb96 ftp://ftp.suse.com/pub/suse/i386/update/8.0/d3/kernel-source-2.4.18.SuSE-303.i386.rpm b9de0731f9bbc4b016455a6d52cd8296 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_deflt-2.4.18-303.src.rpm a73bacad80432c26e856c41338b154bd ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_smp-2.4.18-303.src.rpm 782902cd14e7776db66bd61a12beee03 ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_psmp-2.4.18-303.src.rpm d71fa5cda488ae18f8d023cd8f28bb73 ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_i386-2.4.18-303.src.rpm a360a9e6ed2db54f69e17db36f02614f ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/kernel-source-2.4.18.SuSE-303.nosrc.rpm 8017fd6ff8a6fc1a0660ab35ad174388 x86-64 Platform: SUSE Linux 9.1: ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kernel-default-2.6.5-7.95.x86_64.rpm e2c53fd24991f739fd754c07f7aa8293 ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kernel-smp-2.6.5-7.95.x86_64.rpm f4a69622b7628cdd662a4e39aa59b60e ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kernel-source-2.6.5-7.95.x86_64.rpm e71adfb1fc662600eb11d3acf67c3dc3 source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kernel-default-2.6.5-7.95.nosrc.rpm f6a364879d1f2ae2cf854810d61be3ac ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kernel-smp-2.6.5-7.95.nosrc.rpm a0096d1fc067d89c9200ea3904713d59 ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kernel-source-2.6.5-7.95.src.rpm bf6d0439cfc37b50b4f6822c3403a74f SUSE Linux 9.0: ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/k_deflt-2.4.21-231.x86_64.rpm 17e008a737e5e95e71335e34fa7f86cf ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/k_smp-2.4.21-231.x86_64.rpm ca742b550b1a503595b02cbfc9e0e481 ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/kernel-source-2.4.21-231.x86_64.rpm 8e0c16c42d1a89aa6a09be1dd575de47 source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/k_deflt-2.4.21-231.src.rpm 58b1bf42b5661119d06a04888144707a ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/k_smp-2.4.21-231.src.rpm 5103001136e39fca5a59f4cbde82822b ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/kernel-source-2.4.21-231.src.rpm 231c9e5e00f17df8cfd72d6c8a68d9cf ______________________________________________________________________________ 2) Pending vulnerabilities in SUSE Distributions and Workarounds: - icecast The icecast service is vulnerable to a remote denial-of-service attack. Update packages will be available soon. - sitecopy The sitecopy package includes a vulnerable version of the neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be available soon. - cadaver The cadaver package includes a vulnerable version of the neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be available soon. - OpenOffice_org The OpenOffice_org package includes a vulnerable version of the neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be available soon. - tripwire A format string bug in tripwire can be exploited locally to gain root permissions. New packages are available. - postgresql A buffer overflow in psqlODBC could be exploited to crash the application using it. E.g. a PHP script that uses ODBC to access a PostgreSQL database can be utilized to crash the surrounding Apache web-server. Other parts of PostgreSQL are not affected. New packages are available. - XDM/XFree86 This update resolves random listening to ports by XDM that allows to connect via the XDMCP. SUSE LINUX 9.1 is affected only. New packages are available. - mod_proxy A buffer overflow can be triggered by malicious remote servers that return a negative Content-Length value. This vulnerability can be used to execute commands remotely New packages are available. - freeswan A bug in the certificate chain authentication code could allow an attacker to authenticate any host against a FreeS/WAN server by presenting specially crafted certificates wrapped in a PKCS#7 file. The packages are currently being tested and will be available soon. - ipsec-tools The racoon daemon which is responsible for handling IKE messages fails to reject invalid or self-signed X.509 certificates which allows for man-in-the-middle attacks on IPsec tunnels established via racoon. The packages are currently being tested and will be available soon. - less This update fixes a possible symlink attack in lessopen.sh. The attack can be executed by local users to overwrite arbitrary files with the privileges of the user running less. New packages are available. - libpng This update adds a missing fix for CAN-2002-1363. New packages are available. - pavuk This update fixes a remotely exploitable buffer overflow in pavuk. Thanks to Ulf Harnhammar for reporting this to us. New packages are available. - kdebase3 This update fixes a possible attack on tmp files created at the first login of a user using KDE or at the first time running a KDE application. This bug can be exploited locally to overwrite arbitrary files with the privilege of the victim user. Just affects SUSE LINUX 9.1 New packages are available. ______________________________________________________________________________ 3) standard appendix: authenticity verification, additional information - Package authenticity verification: SUSE update packages are available on many mirror ftp servers around the world. While this service is considered valuable and important to the free and open source software community, many users wish to be certain as to be the origin of the package and its content before installing the package. There are two independent verification methods that can be used to prove the authenticity of a downloaded file or rpm package: 1) md5sums as provided in the (cryptographically signed) announcement. 2) using the internal gpg signatures of the rpm package. 1) execute the command md5sum <name-of-the-file.rpm> after you have downloaded the file from a SUSE ftp server or its mirrors. Then, compare the resulting md5sum with the one that is listed in the announcement. Since the announcement containing the checksums is cryptographically signed (usually using the key security@suse.de), the checksums offer proof of the authenticity of the package. We recommend against subscribing to security lists which cause the email message containing the announcement to be modified so that the signature does not match after transport through the mailing list software. Downsides: You must be able to verify the authenticity of the announcement in the first place. If RPM packages are being rebuilt and a new version of a package is published on the ftp server, all md5 sums for the files are useless. 2) rpm package signatures provide an easy way to verify the authenticity of an rpm package. Use the command rpm -v --checksig <file.rpm> to verify the signature of the package, where <file.rpm> is the filename of the rpm package that you have downloaded. Of course, package authenticity verification can only target an un-installed rpm package file. Prerequisites: a) gpg is installed b) The package is signed using a certain key. The public part of this key must be installed by the gpg program in the directory ~/.gnupg/ under the user's home directory who performs the signature verification (usually root). You can import the key that is used by SUSE in rpm packages for SUSE Linux by saving this announcement to a file ("announcement.txt") and running the command (do "su -" to be root): gpg --batch; gpg < announcement.txt | gpg --import SUSE Linux distributions version 7.1 and thereafter install the key "build@suse.de" upon installation or upgrade, provided that the package gpg is installed. The file containing the public key is placed at the top-level directory of the first CD (pubring.gpg) and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de . - SUSE runs two security mailing lists to which any interested party may subscribe: suse-security@suse.com - general/linux/SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an email to <suse-security-subscribe@suse.com>. suse-security-announce@suse.com - SUSE's announce-only mailing list. Only SUSE's security announcements are sent to this list. To subscribe, send an email to <suse-security-announce-subscribe@suse.com>. For general information or the frequently asked questions (faq) send mail to: <suse-security-info@suse.com> or <suse-security-faq@suse.com> respectively. ===================================================================== SUSE's security contact is <security@suse.com> or <security@suse.de>. The <security@suse.de> public key is listed below. ===================================================================== ______________________________________________________________________________ The information in this advisory may be distributed or reproduced, provided that the advisory is not modified in any way. In particular, it is desired that the clear-text signature must show proof of the authenticity of the text. SUSE Linux AG makes no warranties of any kind whatsoever with respect to the information contained in this security advisory. Type Bits/KeyID Date User ID pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team <security@suse.de> pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@suse.de> #####-----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org mQGiBDnu9IERBACT8Y35+2vv4MGVKiLEMOl9GdST6MCkYS3yEKeueNWc+z/0Kvff 4JctBsgs47tjmiI9sl0eHjm3gTR8rItXMN6sJEUHWzDP+Y0PFPboMvKx0FXl/A0d M+HFrruCgBlWt6FA+okRySQiliuI5phwqkXefl9AhkwR8xocQSVCFxcwvwCglVcO QliHu8jwRQHxlRE0tkwQQI0D+wfQwKdvhDplxHJ5nf7U8c/yE/vdvpN6lF0tmFrK XBUX+K7u4ifrZlQvj/81M4INjtXreqDiJtr99Rs6xa0ScZqITuZC4CWxJa9GynBE D3+D2t1V/f8l0smsuYoFOF7Ib49IkTdbtwAThlZp8bEhELBeGaPdNCcmfZ66rKUd G5sRA/9ovnc1krSQF2+sqB9/o7w5/q2qiyzwOSTnkjtBUVKn4zLUOf6aeBAoV6NM CC3Kj9aZHfA+ND0ehPaVGJgjaVNFhPi4x0e7BULdvgOoAqajLfvkURHAeSsxXIoE myW/xC1sBbDkDUIBSx5oej73XCZgnj/inphRqGpsb+1nKFvF+rQoU3VTRSBQYWNr YWdlIFNpZ25pbmcgS2V5IDxidWlsZEBzdXNlLmRlPohcBBMRAgAcBQI57vSBBQkD wmcABAsKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyl8sAJ98BgD40zw0GHJHIf6d NfnwI2PAsgCgjH1+PnYEl7TFjtZsqhezX7vZvYCIRgQQEQIABgUCOnBeUgAKCRCe QOMQAAqrpNzOAKCL512FZvv4VZx94TpbA9lxyoAejACeOO1HIbActAevk5MUBhNe LZa/qM2JARUDBRA6cGBvd7LmAD0l09kBATWnB/9An5vfiUUE1VQnt+T/EYklES3t XXaJJp9pHMa4fzFa8jPVtv5UBHGee3XoUNDVwM2OgSEISZxbzdXGnqIlcT08TzBU D9i579uifklLsnr35SJDZ6ram51/CWOnnaVhUzneOA9gTPSr+/fT3WeVnwJiQCQ3 0kNLWVXWATMnsnT486eAOlT6UNBPYQLpUprF5Yryk23pQUPAgJENDEqeU6iIO9Ot 1ZPtB0lniw+/xCi13D360o1tZDYOp0hHHJN3D3EN8C1yPqZd5CvvznYvB6bWBIpW cRgdn2DUVMmpU661jwqGlRz1F84JG/xe4jGuzgpJt9IXSzyohEJB6XG5+D0BiF0E ExECAB0FAjxqqTQFCQoAgrMFCwcKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyp1f AJ9dR7saz2KPNwD3U+fy/0BDKXrYGACfbJ8fQcJqCBQxeHvt9yMPDVq0B0W5Ag0E Oe70khAIAISR0E3ozF/la+oNaRwxHLrCet30NgnxRROYhPaJB/Tu1FQokn2/Qld/ HZnh3TwhBIw1FqrhWBJ7491iAjLR9uPbdWJrn+A7t8kSkPaF3Z/6kyc5a8fas44h t5h+6HMBzoFCMAq2aBHQRFRNp9Mz1ZvoXXcI1lk1l8OqcUM/ovXbDfPcXsUVeTPT tGzcAi2jVl9hl3iwJKkyv/RLmcusdsi8YunbvWGFAF5GaagYQo7YlF6UaBQnYJTM 523AMgpPQtsKm9o/w9WdgXkgWhgkhZEeqUS3m5xNey1nLu9iMvq9M/iXnGz4sg6Q 2Y+GqZ+yAvNWjRRou3zSE7Bzg28MI4sAAwYH/2D71Xc5HPDgu87WnBFgmp8MpSr8 QnSs0wwPg3xEullGEocolSb2c0ctuSyeVnCttJMzkukL9TqyF4s/6XRstWirSWaw JxRLKH6Zjo/FaKsshYKf8gBkAaddvpl3pO0gmUYbqmpQ3xDEYlhCeieXS5MkockQ 1sj2xYdB1xO0ExzfiCiscUKjUFy+mdzUsUutafuZ+gbHog1CN/ccZCkxcBa5IFCH ORrNjq9pYWlrxsEn6ApsG7JJbM2besW1PkdEoxak74z1senh36m5jQvVjA3U4xq1 wwylxadmmJaJHzeiLfb7G1ZRjZTsB7fyYxqDzMVul6o9BSwO/1XsIAnV1uuITAQY EQIADAUCOe70kgUJA8JnAAAKCRCoTtronIAKyksiAJsFB3/77SkH3JlYOGrEe1Ol 0JdGwACeKTttgeVPFB+iGJdiwQlxasOfuXyITAQYEQIADAUCPGqpWQUJCgCCxwAK CRCoTtronIAKyofBAKCSZM2UFyta/fe9WgITK9I5hbxxtQCfX+0ar2CZmSknn3co SPihn1+OBNyZAQ0DNuEtBAAAAQgAoCRcd7SVZEFcumffyEwfLTcXQjhKzOahzxpo omuF+HIyU4AGq+SU8sTZ/1SsjhdzzrSAfv1lETACA+3SmLr5KV40Us1w0UC64cwt A46xowVq1vMlH2Lib+V/qr3b1hE67nMHjysECVx9Ob4gFuKNoR2eqnAaJvjnAT8J /LoUC20EdCHUqn6v+M9t/WZgC+WNR8cq69uDy3YQhDP/nIan6fm2uf2kSV9A7ZxE GrwsWl/WX5Q/sQqMWaU6r4az98X3z90/cN+eJJ3vwtA+rm+nxEvyev+jaLuOQBDf ebh/XA4FZ35xmi+spdiVeJH4F/ubaGlmj7+wDOF3suYAPSXT2QAFEbQlU3VTRSBT ZWN1cml0eSBUZWFtIDxzZWN1cml0eUBzdXNlLmRlPokBFQMFEDbhLUfkWLKHsco8 RQEBVw4H/1vIdiOLX/7hdzYaG9crQVIk3QwaB5eBbjvLEMvuCZHiY2COUg5QdmPQ 8SlWNZ6k4nu1BLcv2g/pymPUWP9fG4tuSnlUJDrWGm3nhyhAC9iudP2u1YQY37Gb B6NPVaZiYMnEb4QYFcqv5c/r2ghSXUTYk7etd6SW6WCOpEqizhx1cqDKNZnsI/1X 11pFcO2N7rc6byDBJ1T+cK+F1Ehan9XBt/shryJmv04nli5CXQMEbiqYYMOu8iaA 8AWRgXPCWqhyGhcVD3LRhUJXjUOdH4ZiHCXaoF3zVPxpeGKEQY8iBrDeDyB3wHmj qY9WCX6cmogGQRgYG6yJqDalLqrDOdmJARUDBRA24S0Ed7LmAD0l09kBAW04B/4p WH3f1vQn3i6/+SmDjGzUu2GWGq6Fsdwo2hVM2ym6CILeow/K9JfhdwGvY8LRxWRL hn09j2IJ9P7H1Yz3qDf10AX6V7YILHtchKT1dcngCkTLmDgC4rs1iAAl3f089sRG BafGPGKv2DQjHfR1LfRtbf0P7c09Tkej1MP8HtQMW9hPkBYeXcwbCjdrVGFOzqx+ AvvJDdT6a+oyRMTFlvmZ83UV5pgoyimgjhWnM1V4bFBYjPrtWMkdXJSUXbR6Q7Pi RZWCzGRzwbaxqpl3rK/YTCphOLwEMB27B4/fcqtBzgoMOiaZA0M5fFoo54KgRIh0 zinsSx2OrWgvSiLEXXYKiEYEEBECAAYFAjseYcMACgkQnkDjEAAKq6ROVACgjhDM /3KM+iFjs5QXsnd4oFPOnbkAnjYGa1J3em+bmV2aiCdYXdOuGn4ZiQCVAwUQN7c7 whaQN/7O/JIVAQEB+QP/cYblSAmPXxSFiaHWB+MiUNw8B6ozBLK0QcMQ2YcL6+Vl D+nSZP20+Ja2nfiKjnibCv5ss83yXoHkYk2Rsa8foz6Y7tHwuPiccvqnIC/c9Cvz dbIsdxpfsi0qWPfvX/jLMpXqqnPjdIZErgxpwujas1n9016PuXA8K3MJwVjCqSKI RgQQEQIABgUCOhpCpAAKCRDHUqoysN/3gCt7AJ9adNQMbmA1iSYcbhtgvx9ByLPI DgCfZ5Wj+f7cnYpFZI6GkAyyczG09sE= =LRKC - -----END PGP PUBLIC KEY BLOCK----- - -- - - | Roman Drahtm\xfcller <draht@suse.de> // "You don't need eyes to see, | SUSE Linux AG - Security Phone: // you need vision!" | N\xfcrnberg, Germany +49-911-740530 // Maxi Jazz, Faithless | - - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iQEVAwUBQOWPL3ey5gA9JdPZAQFFzQf+Mo5WmO40BDHakn4qD5rAcfU6H/0rhMpy Bi8r+g6GoSp/m2Zy+1O0Qn3jVb/iirVlnHH3DND1r/GunM3c5CTaMYt2Bt7PTOdt OsjD41lbiFlHDmmmaodROQvcrz7T67YU0gCtSKJdDfs2ATiiUOcyUQZNfi/PiEqD jwmKpP5c1NXSXPSwZ2f430itJA5iUqqVBeB1WHn63kOnIKtHBJ9c6uw3rZ99t1OA iud3L+VQSycb8xQSlOsuiaYW1S236VsogKWRbqY76eo7E2AnVQlMpcZkyW91/vfT WntQlZJAaGFX1q/IyGy+PGFPUoJjNc7H6jy5ZqJqXR5Sb0KrHfadCQ== =24bz -----END PGP SIGNATURE-----

Unknown vulnerability in Linux kernel 2.x may allow local users to modify the group ID of files, such as NFS exported files in kernel 2.4. Linux Kernel of NFS The server inode_change_ok() Due to incomplete file owner check in the function, NFS If you are exporting for client mounting, NFS Files that cannot be changed by the client GID There is a vulnerability that can be modified illegally.file of GID May be altered illegally. For the Linux kernel 2.4.X this issue is only exploitable when the kernel NFS server is active, for the 2.6.X kernel this issue is always exploitable. An attacker may reportedly be able to exploit this issue to gain superuser privileges. This issue was reported in version 2.6.6, but other versions, including 2.4.X, are also likely vulnerable. Red Hat Enterprise Linux includes the 2.4 kernel. -----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SUSE Security Announcement Package: kernel Announcement-ID: SUSE-SA:2004:020 Date: Tuesday, Jul 2nd 2004 18:00 MEST Affected products: 8.0, 8.1, 8.2, 9.0, 9.1 SUSE Linux Database Server, SUSE eMail Server III, 3.1 SUSE Linux Enterprise Server 7, 8 SUSE Linux Firewall on CD/Admin host SUSE Linux Connectivity Server SUSE Linux Office Server Vulnerability Type: local privilege escalation Severity (1-10): 6 SUSE default package: yes Cross References: CAN-2004-0495 CAN-2004-0496 CAN-2004-0497 CAN-2004-0535 CAN-2004-0626 Content of this advisory: 1) security vulnerability resolved: - chown: users can change the group affiliation of arbitrary files to the group they belong to - missing DAC check in chown(2): local privilege escalation - overflow with signals: local denial-of-service - pss, mpu401 sound driver: read/write to complete memory - airo driver: read/write to complete memory - ALSA: copy_from_user/copy_to_user confused - acpi_asus: read from random memory - decnet: write to memory without checking - e1000 driver: read complete memory problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - icecast - sitecopy - cadaver - OpenOffice_org - tripwire - postgresql* - mod_proxy - freeswan - ipsec-tools - less - libpng - pavuk - XFree86* - kdebase3 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information Multiple security vulnerabilities are being addressed with this security update of the Linux kernel. Kernel memory access vulnerabilities are fixed in the e1000, decnet, acpi_asus, alsa, airo/WLAN, pss and mpu401 drivers. These vulnerabilities can lead to kernel memory read access, write access and local denial of service conditions, resulting in access to the root account for an attacker with a local account on the affected system. Missing Discretionary Access Control (DAC) checks in the chown(2) system call allow an attacker with a local account to change the group ownership of arbitrary files, which leads to root privileges on affected systems. It is specific to kernel version 2.6 based systems such as the SUSE Linux 9.1 product, that only local shell access is needed to exploit this vulnerability. An interesting variant of the missing checks is that the ownership of files in the /proc filesystem can be altered, while the changed ownership still does not allow the files to be accessed as a non-root user for to be able to exploit the vulnerability. If the knfsd NFS server is not activated (it is off by default), the vulnerability is not exposed. These issues related to the chown(2) system call have been discovered by Michael Schroeder and Ruediger Oertel, both SUSE LINUX. The only network-related vulnerability fixed with the kernel updates that are subject to this announcement affect the SUSE Linux 9.1 distribution only, as it is based on a 2.6 kernel. Found and reported to bugtraq by Adam Osuchowski and Tomasz Dubinski, the vulnerability allows a remote attacker to send a specially crafted TCP packet to a vulnerable system, causing that system to stall if it makes use of TCP option matching netfilter rules. In some rare configurations of the SUSE Linux 9.1 distribution, some users have experienced stalling systems during system startup. These problems are fixed with this kernel update. SPECIAL INSTALL INSTRUCTIONS: ============================== For the impatient: Run YOU (Yast2 Online Update, command "yast2 online_update" as root) to install the updates (semi) automatically, if you have a SUSE Linux 8.1 and newer system. For those who wish to install their kernel updates manually and for those who use a SUSE Linux 8.0 system: The following paragraphs will guide you through the installation process in a step-by-step fashion. The character sequence "****" marks the beginning of a new paragraph. In some cases, the steps outlined in a particular paragraph may or may not be applicable to your situation. Therefore, please make sure to read through all of the steps below before attempting any of these procedures. All of the commands that need to be executed are required to be run as the superuser (root). Each step relies on the steps before it to complete successfully. **** Step 1: Determine the needed kernel type Please use the following command to find the kernel type that is installed on your system: rpm -qf /boot/vmlinuz Following are the possible kernel types (disregard the version and build number following the name separated by the "-" character) k_deflt # default kernel, good for most systems. k_i386 # kernel for older processors and chipsets k_athlon # kernel made specifically for AMD Athlon(tm) family processors k_psmp # kernel for Pentium-I dual processor systems k_smp # kernel for SMP systems (Pentium-II and above) k_smp4G # kernel for SMP systems which supports a maximum of 4G of RAM kernel-64k-pagesize kernel-bigsmp kernel-default kernel-smp **** Step 2: Download the package for your system Please download the kernel RPM package for your distribution with the name as indicated by Step 1. The list of all kernel rpm packages is appended below. Note: The kernel-source package does not contain a binary kernel in bootable form. Instead, it contains the sources that the binary kernel rpm packages are created from. It can be used by administrators who have decided to build their own kernel. Since the kernel-source.rpm is an installable (compiled) package that contains sources for the linux kernel, it is not the source RPM for the kernel RPM binary packages. The kernel RPM binary packages for the distributions can be found at the locations below ftp://ftp.suse.com/pub/suse/i386/update/. 8.0/images/ 8.1/rpm/i586 8.2/rpm/i586 9.0/rpm/i586 9.1/rpm/i586 After downloading the kernel RPM package for your system, you should verify the authenticity of the kernel rpm package using the methods as listed in section 3) of each SUSE Security Announcement. **** Step 3: Installing your kernel rpm package Install the rpm package that you have downloaded in Steps 3 or 4 with the command rpm -Uhv --nodeps --force <K_FILE.RPM> where <K_FILE.RPM> is the name of the rpm package that you downloaded. Warning: After performing this step, your system will likely not be able to boot if the following steps have not been fully followed. If you run SUSE LINUX 8.1 and haven't applied the kernel update (SUSE-SA:2003:034), AND you are using the freeswan package, you also need to update the freeswan rpm as a dependency as offered by YOU (YaST Online Update). The package can be downloaded from ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/ **** Step 4: configuring and creating the initrd The initrd is a ramdisk that is loaded into the memory of your system together with the kernel boot image by the bootloader. The kernel uses the content of this ramdisk to execute commands that must be run before the kernel can mount its actual root filesystem. It is usually used to initialize SCSI drivers or NIC drivers for diskless operation. The variable INITRD_MODULES in /etc/sysconfig/kernel determines which kernel modules will be loaded in the initrd before the kernel has mounted its actual root filesystem. The variable should contain your SCSI adapter (if any) or filesystem driver modules. With the installation of the new kernel, the initrd has to be re-packed with the update kernel modules. Please run the command mk_initrd as root to create a new init ramdisk (initrd) for your system. On SuSE Linux 8.1 and later, this is done automatically when the RPM is installed. **** Step 5: bootloader If you run a SUSE LINUX 8.x, SLES8, or SUSE LINUX 9.x system, there are two options: Depending on your software configuration, you have either the lilo bootloader or the grub bootloader installed and initialized on your system. The grub bootloader does not require any further actions to be performed after the new kernel images have been moved in place by the rpm Update command. If you have a lilo bootloader installed and initialized, then the lilo program must be run as root. Use the command grep LOADER_TYPE /etc/sysconfig/bootloader to find out which boot loader is configured. If it is lilo, then you must run the lilo command as root. If grub is listed, then your system does not require any bootloader initialization. Warning: An improperly installed bootloader may render your system unbootable. **** Step 6: reboot If all of the steps above have been successfully completed on your system, then the new kernel including the kernel modules and the initrd should be ready to boot. The system needs to be rebooted for the changes to become active. Please make sure that all steps have completed, then reboot using the command shutdown -r now or init 6 Your system should now shut down and reboot with the new kernel. There is no workaround known. Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement. Then, install the package using the command "rpm -Fhv file.rpm" to apply the update. Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web. x86 Platform: SUSE Linux 9.1: ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-default-2.6.5-7.95.i586.rpm 800418d3dddf6d3b83925f562842205a ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-smp-2.6.5-7.95.i586.rpm 0cb990b159e10685bb29b76d312ddd25 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-bigsmp-2.6.5-7.95.i586.rpm 7446bb70f52bce57a914066be4ed8e45 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-bigsmp-2.6.5-7.95.i586.rpm 7446bb70f52bce57a914066be4ed8e45 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kernel-source-2.6.5-7.95.i586.rpm ede031495ee19d8b6eca1873e7155332 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/kernel-default-2.6.5-7.95.nosrc.rpm 620ef40226fec31a773397cf3051bf36 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/kernel-smp-2.6.5-7.95.nosrc.rpm 9b61b5a70b304f5554cb18a6bae5b5fd ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/kernel-bigsmp-2.6.5-7.95.nosrc.rpm 227c85280ee17a66c8590fe1bb14c596 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/kernel-source-2.6.5-7.95.src.rpm 895fee3033de0810ff1173ce8ee87936 SUSE Linux 9.0: ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_deflt-2.4.21-231.i586.rpm 48be395b96329909486ae3a5152348fa ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_athlon-2.4.21-231.i586.rpm 4cd322b4f511d5fe4c483ed28a82097e ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_smp-2.4.21-231.i586.rpm 262e33cebf1b0d35fb6d3235c9ab8815 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_smp4G-2.4.21-231.i586.rpm 8d81370f90736b12aa71b9c744f6e0e2 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_um-2.4.21-231.i586.rpm bc59c838c84ba318dc4d24da08a3022e ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/kernel-source-2.4.21-231.i586.rpm f9586ba982e0398c3e48871955b661aa source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_deflt-2.4.21-231.src.rpm 18673b0bf347fe9557d4e67ca02000c0 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_athlon-2.4.21-231.src.rpm 71496daac44196b0e0a3836ee6a3b4ed ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_smp-2.4.21-231.src.rpm 7c208e9e3f7be1a68c3c8457eb2cafc4 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_smp4G-2.4.21-231.src.rpm b77863c863aaf4b931bff263220e6ec9 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_um-2.4.21-231.src.rpm bed7e964e22c5e5d2f5e7a5e3816dde4 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/kernel-source-2.4.21-231.src.rpm 6b5137bf379fbfc861441151039575da SUSE Linux 8.2: ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_deflt-2.4.20-115.i586.rpm 50d261b44616f9145a0dc16df501a504 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_athlon-2.4.20-115.i586.rpm 10095854c0bdae20991d90b822352e14 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_smp-2.4.20-115.i586.rpm a2ef7cfb0e62ad955dda2b0574eb3150 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_psmp-2.4.20-115.i586.rpm 1d2b0d0e2c7998685ed04c24e593b196 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/kernel-source-2.4.20.SuSE-115.i586.rpm d8bf98c46ba5313db286d5706f7fb3b8 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_deflt-2.4.20-115.src.rpm e13a7b4c2b185cfeb991c31607f79ccb ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_athlon-2.4.20-115.src.rpm 0e2f2cf20e7d7a20f3e50b245105df61 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_smp-2.4.20-115.src.rpm 6cfac2914d3827ec562ff9d6be29c566 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_psmp-2.4.20-115.src.rpm afd29843aa69d805ef5f25d39ecd0e7f ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/kernel-source-2.4.20.SuSE-115.src.rpm 098a1400a48404931acb8b3eb2e821fb SUSE Linux 8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_deflt-2.4.21-231.i586.rpm 3bdaa593d09a7cbff632a2c4446d5603 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_athlon-2.4.21-231.i586.rpm ba60d0b2b6d3bc9c38b4e8b3859e1586 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_smp-2.4.21-231.i586.rpm ffa8983669004826a0cbedbe34dced76 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_psmp-2.4.21-231.i586.rpm 25174fd007f5a39ee0342dd6f18f2eaa ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/kernel-source-2.4.21-231.i586.rpm 10837fa561cd5104e55d48e46c837764 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_deflt-2.4.21-231.src.rpm c37e8b87819602e77b14206affef00fa ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_athlon-2.4.21-231.src.rpm 7be68a677db5a65be1a46ec194b35497 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_smp-2.4.21-231.src.rpm 8e4b7d5a6bb81da5a00971cdcc4ec641 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_psmp-2.4.21-231.src.rpm d8ba1db81a9b517f867c970e4fc443a7 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/kernel-source-2.4.21-231.src.rpm 96a0a9242d066083c7bff8e0f70b7bbe SUSE Linux 8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_deflt-2.4.18-303.i386.rpm ec1e53b3812c0c0bd3681435d69fb134 ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_smp-2.4.18-303.i386.rpm 583164e52019ae090fd47e425c2a933e ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_psmp-2.4.18-303.i386.rpm 9ac8983abef05697d75f3117e37e5f18 ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_i386-2.4.18-303.i386.rpm 4932c4d6a42fc9be02013f398ab5bb96 ftp://ftp.suse.com/pub/suse/i386/update/8.0/d3/kernel-source-2.4.18.SuSE-303.i386.rpm b9de0731f9bbc4b016455a6d52cd8296 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_deflt-2.4.18-303.src.rpm a73bacad80432c26e856c41338b154bd ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_smp-2.4.18-303.src.rpm 782902cd14e7776db66bd61a12beee03 ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_psmp-2.4.18-303.src.rpm d71fa5cda488ae18f8d023cd8f28bb73 ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_i386-2.4.18-303.src.rpm a360a9e6ed2db54f69e17db36f02614f ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/kernel-source-2.4.18.SuSE-303.nosrc.rpm 8017fd6ff8a6fc1a0660ab35ad174388 x86-64 Platform: SUSE Linux 9.1: ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kernel-default-2.6.5-7.95.x86_64.rpm e2c53fd24991f739fd754c07f7aa8293 ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kernel-smp-2.6.5-7.95.x86_64.rpm f4a69622b7628cdd662a4e39aa59b60e ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kernel-source-2.6.5-7.95.x86_64.rpm e71adfb1fc662600eb11d3acf67c3dc3 source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kernel-default-2.6.5-7.95.nosrc.rpm f6a364879d1f2ae2cf854810d61be3ac ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kernel-smp-2.6.5-7.95.nosrc.rpm a0096d1fc067d89c9200ea3904713d59 ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kernel-source-2.6.5-7.95.src.rpm bf6d0439cfc37b50b4f6822c3403a74f SUSE Linux 9.0: ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/k_deflt-2.4.21-231.x86_64.rpm 17e008a737e5e95e71335e34fa7f86cf ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/k_smp-2.4.21-231.x86_64.rpm ca742b550b1a503595b02cbfc9e0e481 ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/kernel-source-2.4.21-231.x86_64.rpm 8e0c16c42d1a89aa6a09be1dd575de47 source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/k_deflt-2.4.21-231.src.rpm 58b1bf42b5661119d06a04888144707a ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/k_smp-2.4.21-231.src.rpm 5103001136e39fca5a59f4cbde82822b ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/kernel-source-2.4.21-231.src.rpm 231c9e5e00f17df8cfd72d6c8a68d9cf ______________________________________________________________________________ 2) Pending vulnerabilities in SUSE Distributions and Workarounds: - icecast The icecast service is vulnerable to a remote denial-of-service attack. Update packages will be available soon. - sitecopy The sitecopy package includes a vulnerable version of the neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be available soon. - cadaver The cadaver package includes a vulnerable version of the neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be available soon. - OpenOffice_org The OpenOffice_org package includes a vulnerable version of the neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be available soon. - tripwire A format string bug in tripwire can be exploited locally to gain root permissions. New packages are available. - postgresql A buffer overflow in psqlODBC could be exploited to crash the application using it. E.g. a PHP script that uses ODBC to access a PostgreSQL database can be utilized to crash the surrounding Apache web-server. Other parts of PostgreSQL are not affected. New packages are available. - XDM/XFree86 This update resolves random listening to ports by XDM that allows to connect via the XDMCP. SUSE LINUX 9.1 is affected only. New packages are available. - mod_proxy A buffer overflow can be triggered by malicious remote servers that return a negative Content-Length value. This vulnerability can be used to execute commands remotely New packages are available. - freeswan A bug in the certificate chain authentication code could allow an attacker to authenticate any host against a FreeS/WAN server by presenting specially crafted certificates wrapped in a PKCS#7 file. The packages are currently being tested and will be available soon. - ipsec-tools The racoon daemon which is responsible for handling IKE messages fails to reject invalid or self-signed X.509 certificates which allows for man-in-the-middle attacks on IPsec tunnels established via racoon. The packages are currently being tested and will be available soon. - less This update fixes a possible symlink attack in lessopen.sh. The attack can be executed by local users to overwrite arbitrary files with the privileges of the user running less. New packages are available. - libpng This update adds a missing fix for CAN-2002-1363. New packages are available. - pavuk This update fixes a remotely exploitable buffer overflow in pavuk. Thanks to Ulf Harnhammar for reporting this to us. New packages are available. - kdebase3 This update fixes a possible attack on tmp files created at the first login of a user using KDE or at the first time running a KDE application. This bug can be exploited locally to overwrite arbitrary files with the privilege of the victim user. Just affects SUSE LINUX 9.1 New packages are available. ______________________________________________________________________________ 3) standard appendix: authenticity verification, additional information - Package authenticity verification: SUSE update packages are available on many mirror ftp servers around the world. While this service is considered valuable and important to the free and open source software community, many users wish to be certain as to be the origin of the package and its content before installing the package. There are two independent verification methods that can be used to prove the authenticity of a downloaded file or rpm package: 1) md5sums as provided in the (cryptographically signed) announcement. 2) using the internal gpg signatures of the rpm package. 1) execute the command md5sum <name-of-the-file.rpm> after you have downloaded the file from a SUSE ftp server or its mirrors. Then, compare the resulting md5sum with the one that is listed in the announcement. Since the announcement containing the checksums is cryptographically signed (usually using the key security@suse.de), the checksums offer proof of the authenticity of the package. We recommend against subscribing to security lists which cause the email message containing the announcement to be modified so that the signature does not match after transport through the mailing list software. Downsides: You must be able to verify the authenticity of the announcement in the first place. If RPM packages are being rebuilt and a new version of a package is published on the ftp server, all md5 sums for the files are useless. 2) rpm package signatures provide an easy way to verify the authenticity of an rpm package. Use the command rpm -v --checksig <file.rpm> to verify the signature of the package, where <file.rpm> is the filename of the rpm package that you have downloaded. Of course, package authenticity verification can only target an un-installed rpm package file. Prerequisites: a) gpg is installed b) The package is signed using a certain key. The public part of this key must be installed by the gpg program in the directory ~/.gnupg/ under the user's home directory who performs the signature verification (usually root). You can import the key that is used by SUSE in rpm packages for SUSE Linux by saving this announcement to a file ("announcement.txt") and running the command (do "su -" to be root): gpg --batch; gpg < announcement.txt | gpg --import SUSE Linux distributions version 7.1 and thereafter install the key "build@suse.de" upon installation or upgrade, provided that the package gpg is installed. The file containing the public key is placed at the top-level directory of the first CD (pubring.gpg) and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de . - SUSE runs two security mailing lists to which any interested party may subscribe: suse-security@suse.com - general/linux/SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an email to <suse-security-subscribe@suse.com>. suse-security-announce@suse.com - SUSE's announce-only mailing list. Only SUSE's security announcements are sent to this list. To subscribe, send an email to <suse-security-announce-subscribe@suse.com>. For general information or the frequently asked questions (faq) send mail to: <suse-security-info@suse.com> or <suse-security-faq@suse.com> respectively. ===================================================================== SUSE's security contact is <security@suse.com> or <security@suse.de>. The <security@suse.de> public key is listed below. ===================================================================== ______________________________________________________________________________ The information in this advisory may be distributed or reproduced, provided that the advisory is not modified in any way. In particular, it is desired that the clear-text signature must show proof of the authenticity of the text. SUSE Linux AG makes no warranties of any kind whatsoever with respect to the information contained in this security advisory. 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UploadServlet in Cisco Collaboration Server (CCS) running ServletExec before 3.0E allows remote attackers to upload and execute arbitrary files via a direct call to the UploadServlet URL. It has been reported that New Atlanta ServletExec is affected by an unauthorized access vulnerability; fixes are available. This issue is due to an access validation error. This issue would allow an attacker to upload and execute files on the affected computer, facilitating unauthorized interactive access as well as other attacks. This issue might also be leveraged to cause a denial of service condition in the affected server

Memory leak in Juniper JUNOS Packet Forwarding Engine (PFE) allows remote attackers to cause a denial of service (memory exhaustion and device reboot) via certain IPv6 packets. If an attacker submits multiple packets to a vulnerable router running IPv6-enabled PFE, the router can be repeatedly rebooted, essentially creating a denial of service for the router. Juniper Networks Junos OS Exists in unspecified vulnerabilities.None. All Juniper Networks M-series and T-series routing platforms with IPv6 support are also prone to this issue. The operating system provides a secure programming interface and Junos SDK. Remote attackers can use this vulnerability to carry out denial-of-service attacks on routers running JUNOS devices. This can be exploited by sending multiple specially crafted IPv6 packets to a vulnerable network device. Successful exploitation consumes all available memory and causes a vulnerable network device to reboot. SOLUTION: A solution is available at: https://www.juniper.net/alerts/viewalert.jsp?txtAlertNumber=PSN-2004-06-009&actionBtn=Search Disable IPv6 support in the PFE. PROVIDED AND/OR DISCOVERED BY: Reported by vendor. OTHER REFERENCES: US-CERT VU#658859: http://www.kb.cert.org/vuls/id/658859 ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/ Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. ---------------------------------------------------------------------- Unsubscribe: Secunia Security Advisories http://secunia.com/sec_adv_unsubscribe/?email=packet@packetstormsecurity.org ----------------------------------------------------------------------

Safari 1.2.2 does not properly prevent a frame in one domain from injecting content into a frame that belongs to another domain, which facilitates web site spoofing and other attacks, aka the frame injection vulnerability. Microsoft Internet Explorer fails to properly restrict access to a document's frames, which may allow an attacker to modify the contents of frames in a different domain. ------------ This vulnerability information is a summary of multiple vulnerabilities released at the same time. Please note that the contents of vulnerability information other than the title are included. ------------ Microsoft Internet Explorer 6.0 SP1 Previously, there was a flaw in the cross-domain security check function for the content in the frame, so it opened in a new window Web There is a problem that allows the display of content from different domains within the frame of the page. (CAN-2004-0719) Remote attackers who exploit this issue are trusted Web Disguised to display content in the frame that uses the site's frame to instruct user account and card information input Web By navigating to the site, you may eventually be able to capture important information about the target user. still, Microsoft Windows Server 2003 The default setting for Internet Explorer Enhanced security configuration (Enhanced Security Configuration) Is valid and is not affected by this issue. Also this problem IE 3.x/4.x Previous issues with patches released for (MS98-020) It is reported by the discoverer that it is the same thing. In addition, the problem is Web It also exists in the browser. ・ Opera 7.51 Before (CAN-2004-0717) ・ Microsoft Internet Explorer for Mac 5.2.3 (CAN-2004-0719) ・ Mozilla 1.6 Before (CAN-2004-0718) ・ Mozilla Firebird 0.7 for Linux (CAN-2004-0718) ・ Mozilla Firefox 0.x (CAN-2004-0718) ・ Netscape 7.x (CAN-2004-0718) ・ Safari 1.x (CAN-2004-0720) ・ KDE Konqueror 3.2.3 Before (CAN-2004-0721) The above Web It has been suggested that this problem exists in addition to browser versions.Please refer to the “Overview” for the impact of this vulnerability. An attacker can exploit this issue to change the location of a frame from a different domain. Successful exploits will allow the attacker to access information from the parent document via DOM components that are not domain-reliant (such as the 'onmousedown' event). Internet Explorer 6, 7, and 8 Beta 1 are vulnerable; other versions may also be affected. Apple Safari is reported prone to a cross-domain frame loading vulnerability. It is reported that if the name of a frame rendered in a target site is known, then an attacker may potentially render arbitrary HTML in the frame of the target site. An attacker may exploit this vulnerability to spoof an interface of a trusted web site. To exploit this vulnerability a victim will need to visit a website hosted by an attacker. The attackers site will then spawn a trusted site in a window, if exploited successfully; the attackers site will place data into the IFRAME of the trusted site. This vulnerability may aid in Phishing style attacks. The version of Safari included in Apple Mac OS X versions 1.2.8, 10.3.4, and 10.3.5 is reported vulnerable to this issue. Mac OS X is an operating system used on Mac machines, based on the BSD system. Apple reports that malicious users using malicious WEB sites can inject HTML content into frames used by other domains. As a result, remote users can modify the content of some frames on legitimate web sites that use multiple frames. Cause to deceive target users and obtain other information. For more information: SA11978 Secunia has constructed a test, which can be used to check if your browser is affected: http://secunia.com/multiple_browsers_frame_injection_vulnerability_test/ The vulnerability has been confirmed in Camino 0.8.4, but does not affect version 0.8.3. This may be a variant of: SA11966 The vulnerability is confirmed in IE7. SOLUTION: Do not visit or follow links from untrusted websites. The vulnerability also affects Internet Explorer: SA11966 SOLUTION: Do not browse untrusted sites while browsing trusted sites. The following browsers are not affected: * Mozilla Firefox 0.9 for Windows * Mozilla Firefox 0.9.1 for Windows * Mozilla 1.7 for Windows * Mozilla 1.7 for Linux PROVIDED AND/OR DISCOVERED BY: Reported in Mozilla browser by: Gary McKay OTHER REFERENCES: SA11966: http://secunia.com/advisories/11966/ ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/ Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. ---------------------------------------------------------------------- Unsubscribe: Secunia Security Advisories http://secunia.com/sec_adv_unsubscribe/?email=packet@packetstormsecurity.org ----------------------------------------------------------------------

Integer signedness error in D-Link AirPlus DI-614+ running firmware 2.30 and earlier allows remote attackers to cause a denial of service (IP lease depletion) via a DHCP request with the LEASETIME option set to -1, which makes the DHCP lease valid for thirteen or more years. D-Link AirPlus DI-614 + and DI-604 are SOHO broadband routers.  D-Link AirPlus DI-614 + and DI-604 do not properly handle a large number of DHCP requests. Remote attackers can use this vulnerability to conduct denial of service attacks on devices.  Sending a large number of legitimate DHCP requests can cause the device to consume a lot of memory and needs to be restarted for normal service. An attacker may be able to deny service to legitimate users of an affected device by repeatedly causing the device to reboot. The DI-614+ with firmware revision 2.30, and the DI-604 with unknown firmware were reported vulnerable. The DI-624 Revision B was also confirmed susceptible

3Com SuperStack Switch is a cost-effective, manageable switch from 3COM. The 3Com SuperStack switch device WEB interface has problems in handling some abnormal input. The remote attacker can exploit this vulnerability to perform a denial of service attack on the device. No detailed vulnerability details are currently available. This issue arises due to a failure of the device to handle exceptional input

The BT Voyager 2000 Wireless ADSL Router has a default public SNMP community name, which allows remote attackers to obtain sensitive information such as the password, which is stored in plaintext. bt of voyager 2000 wireless adsl router Exists in unspecified vulnerabilities.Information may be obtained. Data collected by exploiting this vulnerability may be used in further attacks against the victim network. Attackers can use this value to obtain sensitive information

Buffer overflow in the logging capability for the DHCP daemon (DHCPD) for ISC DHCP 3.0.1rc12 and 3.0.1rc13 allows remote attackers to cause a denial of service (server crash) and possibly execute arbitrary code via multiple hostname options in (1) DISCOVER, (2) OFFER, (3) REQUEST, (4) ACK, or (5) NAK messages, which can generate a long string when writing to a log file. The Internet Systems Consortium's (ISC) Dynamic Host Configuration Protocol (DHCP) 3 application contains a buffer overflow vulnerability. Infoblox of dns one appliance Unspecified vulnerabilities exist in products from multiple vendors.None. This issue exists in routines responsible for logging hostname options provided by DHCP clients. This issue is reported to affect ISC DHCPD versions 3.0.1rc12 and 3.0.1rc13. The vulnerable code exists in previous versions of ISC DHCPD 3, but is only believed to be exploitable in these two releases. ISC DHCPD uses syslog to record each transmitted DHCP packet, client's DISCOVER and result OFFER, REQUEST and ACK, and any NAK will be recorded. middle. However, if non-ACSII or non-printable characters are provided, other checks and filters will be performed to prevent overflow. Carefully constructed and submitted data may execute arbitrary commands on the system with the rights of the DHCPD process. ---------------------------------------------------------------------- Secunia is proud to announce the availability of the Secunia Software Inspector. The Secunia Software Inspector is a free service that detects insecure versions of software that you may have installed in your system. When insecure versions are detected, the Secunia Software Inspector also provides thorough guidelines for updating the software to the latest secure version from the vendor. Try it out online: http://secunia.com/software_inspector/ ---------------------------------------------------------------------- TITLE: XEROX WorkCentre Products Multiple Vulnerabilities SECUNIA ADVISORY ID: SA23265 VERIFY ADVISORY: http://secunia.com/advisories/23265/ CRITICAL: Moderately critical IMPACT: Security Bypass, Manipulation of data, Exposure of system information, Exposure of sensitive information, DoS, System access WHERE: >From local network OPERATING SYSTEM: Xerox WorkCentre http://secunia.com/product/4746/ Xerox WorkCentre Pro http://secunia.com/product/4553/ DESCRIPTION: Some vulnerabilities and weaknesses have been reported in various XEROX WorkCentre products, which can be exploited by malicious people to bypass certain security restrictions, expose certain sensitive information, cause a DoS (Denial of Service), and compromise a vulnerable system. 1) Input passed to the TCP/IP hostname, the Scan-to-mailbox folder name field, and to the Microsoft Network configuration parameters in the Web User interface is not properly sanitised. 2) Certain browser settings may allow unauthorized access. Additionally, an unspecified vulnerability in the Web User Interface can be exploited to bypass the authentication. 3) The TFTP/BOOTP auto configuration can be exploited to manipulate certain configuration settings. 4) An unspecified error within the handling of email signatures can be exploited to display improper items. 5) Requests to web services can be made through HTTP instead of HTTPS. Other unspecified HTTP security issues and a httpd.conf misconfiguration are also reported. 6) An error within the Scan-to-mailbox feature can be exploited to anonymously download secure files. Additionally, it is possible to anonymously download audit log files. 7) The system fails to keep accurate time resulting in incorrect time stamps in audit logs. 8) The embedded Samba version contains various vulnerabilities. Additionally, the SMB "Homes" share is visible and it's possible to browse the file system via SMB. 9) The SNMP agent does not return errors for non-writable objects. Additionally, authentication failure traps can't be enabled or generated. 10) An error within ops3-dmn can be exploited to crash the service and cause a DoS by attaching a PS script. 11) It is possible to bypass the security restriction and boot Alchemy by e.g. using an USB thumb drive. 12) The "Validate Repository SSL Certificate" scan feature does not verify the FQDN. 13) Certain problems with the Immediate Image Overwrite and On Demand Image Overwrite, a Postgress port block, and a http TRACE XSS attack in the network controller are reported. 14) Two boundary errors within the embedded DHCP implementation can be exploited to cause a buffer overflow, which may allow execution of arbitrary code. SOLUTION: Apply updated software (see vendor advisories for detailed instructions). PROVIDED AND/OR DISCOVERED BY: Reported by the vendor. ORIGINAL ADVISORY: Xerox: http://www.xerox.com/downloads/usa/en/c/cert_XRX06_006_v1b.pdf http://www.xerox.com/downloads/usa/en/c/cert_XRX06_004_v11.pdf ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/ Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. ---------------------------------------------------------------------- Unsubscribe: Secunia Security Advisories http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org ---------------------------------------------------------------------- . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Technical Cyber Security Alert TA04-174A Multiple Vulnerabilities in ISC DHCP 3 Original release date: June 22, 2004 Last revised: -- Source: US-CERT Systems Affected * ISC DHCP versions 3.0.1rc12 and 3.0.1rc13 Overview Two vulnerabilities in the ISC DHCP allow a remote attacker to cause a denial of the DHCP service on a vulnerable system. It may be possible to exploit these vulnerabilities to execute arbitrary code on the system. I. In transactions, ISC DHCPD logs every DHCP packet along with several pieces of descriptive information. The client's DISCOVER and the resulting OFFER, REQUEST, ACK, and NAKs are all logged. In all of these messages, if the client supplied a hostname, then it is also included in the logged line. These options are concatenated by the server. If the hostname and options contain only ASCII characters, then the string will pass non-ASCII character filters and be temporarily stored in 1024 byte fixed-length buffers on the stack. If a client supplies enough hostname options, it is possible to overflow the fixed-length buffer. VU#654390 discusses C include files for systems that do not support the bounds checking vsnprintf() function. These files define the bounds checking vsnprintf() to the non-bounds checking vsprintf() function. Since vsprintf() is a function that does not check bounds, the size is discarded, creating the potential for a buffer overflow when client data is supplied. Note that the vsnprintf() statements are defined after the vulnerable code that is discussed in VU#317350. Since the preconditions for this vulnerability are similar to those required to exploit VU#317350, these buffer overflow conditions occur sequentially in the code after the buffer overflow vulnerability discussed in VU#317350, and these issues were discovered and resolved at the same time, there is no known exploit path to exploit these buffer overflow conditions caused by VU#654390. Note that VU#654390 was discovered and exploitable once VU#317350 was resolved. VU#317350 is exploitable for all operating systems and configurations. VU#654390 is only defined for the following operating systems: * AIX * AlphaOS * Cygwin32 * HP-UX * Irix * Linux * NextStep * SCO * SunOS 4 * SunOS 5.5 * Ultrix All versions of ISC DCHP 3, including all snapshots, betas, and release candidates, contain the flawed code. US-CERT is tracking these issues as VU#317350, which has been assigned CVE CAN-2004-0460, and VU#654390, which has been assigned CVE CAN-2004-0461. II. III. Solution Apply patches or upgrade These issues have been resolved in ISC DHCP 3.0.1rc14. Your vendor may provide specific patches or updates. For vendor-specific information, please see your vendor's site, or look for your vendor infomation in VU#317350 and VU#654390. As vendors report new information to US-CERT, we will update the vulnerability notes. Appendix B. References * http://www.isc.org/sw/dhcp/ * http://www.kb.cert.org/vuls/id/317350 * http://www.kb.cert.org/vuls/id/654390 _________________________________________________________________ US-CERT thanks Gregory Duchemin and Solar Designer for discovering, reporting, and resolving this vulnerability. Thanks also to David Hankins of ISC for notifying us of this vulnerability and the technical information provided to create this document. _________________________________________________________________ Feedback can be directed to the author: Jason A. Rafail _________________________________________________________________ The latest version of this document can be found at: <http://www.us-cert.gov/cas/techalerts/TA04-174A.html> _________________________________________________________________ Copyright 2004 Carnegie Mellon University. Terms of use: <http://www.us-cert.gov/legal.html> _________________________________________________________________ Revision History June 22, 2004: Initial release -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQFA2HFSXlvNRxAkFWARArH4AKDtUECQTE5HXmvsDQkwcWn9r7uAowCdGTHq AqWt3CgdEPJcIFDbJlIWQHo= =HSxN -----END PGP SIGNATURE----- . This mail also includes a trace of such DHCP REQUEST. Other .bss overflows related to vsnprintf and identified later during our investigations as described in: http://www.kb.cert.org/vuls/id/654390 can be triggered the exact same way. Note that the home made tool i am referencing in this email will be made available very soon and already includes ISC, INFOBLOX and DLINK dhcp vulnerabilities I will drop a note here when it is finally released. cheers, Gregory Special thanks to Solar Designer and David W.Hankins (ISC) --- Original email ------ Summary: i have discovered several stack based overflow in your dhcp-3.0.1rc12 and rc13 (may be others, have not checked) these vulnerabilities can be easily triggered by crafting a dhcp discover or request packet which carries several hostname dhcp options that ,once reassembled by the daemon (as explained in rfc 3396), overflow a stack based variable causing the daemon to crash. I believe than one might execute code remotely on the server with the same user account dhcpd is running with, root in most cases. I have been able at some points during the tests, to control eip' 4 bytes (intel 32bits arch), it was during the ddns forward update operation. Note that all tests have been made on a linux 2.4.20-24.9 using a home made tool to generate custom dhcp traffic Now an example: see dhcpd.conf in attachment if you need it. structure of an offending packet (case of a dhcp request based attack) >> DHCP request >> from 0.0.0.0:68 (ff:ff:ff:ff:ff:ff) to 255.255.255.255:67 (ff:ff:ff:ff:ff:ff) >> op : BOOT REQUEST (1) >> htype : Ethernet (10Mb) (1) >> hlen : 6 >> hops : 0 >> xid : 0x00000000 >> secs : 1 >> flags : UNICAST (0x0000) >> ciaddr : 0.0.0.0 >> yiaddr : 0.0.0.0 >> siaddr : 255.255.255.255 >> giaddr : 0.0.0.0 >> chaddr : ff:ff:ff:ff:ff:ff >> sname : >> file : >> cookie : 0x63825363 (RFC 1497/2132, BOOTP Vendor informations/DHCP options) >> DHCP option (053 [0x35]) : MESSAGE_TYPE : REQUEST >> BOOTP option (012 [0x0c]) : HOSTNAME : AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA >> BOOTP option (012 [0x0c]) : HOSTNAME : AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA >> BOOTP option (012 [0x0c]) : HOSTNAME : AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA >> BOOTP option (012 [0x0c]) : HOSTNAME : AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA >> BOOTP option (012 [0x0c]) : HOSTNAME : AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA >> BOOTP option (012 [0x0c]) : HOSTNAME : AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA >> BOOTP option (012 [0x0c]) : HOSTNAME : AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA >> DHCP option (050 [0x32]) : REQUEST_IP : 192.168.0.99 sending this packet to the ptraced daemon (within gdb) gives: (gdb) run -f -d The program being debugged has been started already. Start it from the beginning? (y or n) y Starting program: /usr/sbin/dhcpd -f -d Internet Software Consortium DHCP Server V3.0.1rc13 Copyright 1995-2003 Internet Software Consortium. All rights reserved. For info, please visit http://www.isc.org/products/DHCP Wrote 0 deleted host decls to leases file. Wrote 0 new dynamic host decls to leases file. Wrote 0 leases to leases file. Listening on LPF/eth0/00:0d:88:b5:95:0c/192.168.0.0/24 Sending on LPF/eth0/00:0d:88:b5:95:0c/192.168.0.0/24 Sending on Socket/fallback/fallback-net Unable to add forward map from bobAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NANAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-1022AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8 860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-284AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-2840X1.92E302E383631P-108AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-2840X1.92E302E383631P-108NANAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-2840X1.92E302E383631P-108NAN0X1.1E4600811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-2840X1. 92E302E383631P-108NAN0X1.1E4600811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA0X1.1DEF80811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-2840X1.92E302E383631P-108NAN0X1.1E4600811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA0X1.1DEF80811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA-0X1.FDE880811DEF8P+0AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-2840X1.92E302E383631P-108NAN0X1.1E4600811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA0X1.1DEF80811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA-0X1.FDE880811DEF8P+0AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA-0X1.FDE2008071205P+0A.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-2840X1.92E302E383631P-108NAN0X1.1E4600811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA0X1.1DEF80811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA-0X 1.FDE880811DEF8P+0AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA-0X1.FDE2008071205P+0A.zob.com.0X1. Program received signal SIGSEGV, Segmentation fault. 0x080add76 in hash_lookup (vp=0xbfffde24, table=0x38322d50, name=0x8149dac "\001\xff\xff\xff\xff\xff\xff", len=7, file=0x80bbe25 "mdb.c", line=1662) at hash.c:363 363 hashno = (*table -> do_hash) (name, len, table -> hash_count); (gdb) backtracing stack show: (gdb) bt #0 0x080add76 in hash_lookup (vp=0xbfffde24, table=0x38322d50, name=0x8149dac "\001\xff\xff\xff\xff\xff\xff", len=7, file=0x80bbe25 "mdb.c", line=1662) at hash.c:363 #1 0x0806fb0a in lease_hash_lookup (ptr=0xbfffde24, table=0x38322d50, buf=0x8149dac "\001\xff\xff\xff\xff\xff\xff", len=7, file=0x80bbe25 "mdb.c", line=1662) at mdb.c:2055 #2 0x0806eb5b in find_lease_by_hw_addr (lp=0xbfffde24, hwaddr=0x8149dac "\001\xff\xff\xff\xff\xff\xff", hwlen=7, file=0x80bbe25 "mdb.c", line=1662) at mdb.c:1574 #3 0x0806ee5f in hw_hash_add (lease=0x8149d30) at mdb.c:1661 #4 0x0806d959 in supersede_lease (comp=0x8149d30, lease=0x811def8, commit=1, propogate=1, pimmediate=1) at mdb.c:969 #5 0x08050cb9 in ack_lease (packet=0x811d6e0, lease=0x8149d30, offer=5, when=0, msg=0xbfffdfd0 "DHCPREQUEST for 192.168.0.99 from ff:ff:ff:ff:ff:ff via eth0", ms_nulltp=0) at dhcp.c:2227 #6 0x0804d041 in dhcprequest (packet=0x811d6e0, ms_nulltp=0, ip_lease=0x0) at dhcp.c:662 #7 0x0804c37d in dhcp (packet=0x811d6e0) at dhcp.c:224 #8 0x08088d9a in do_packet (interface=0x811d568, packet=0xbfffe580, len=1430, from_port=17408, from= {len = 4, iabuf = '\0' <repeats 15 times>}, hfrom=0xbffff5b0) at options.c:2237 #9 0x08096718 in got_one (h=0x811d568) at discover.c:785 #10 0x080a937e in omapi_one_dispatch (wo=0x0, t=0x0) at dispatch.c:418 #11 0x0807cce3 in dispatch () at dispatch.c:103 #12 0x0804add1 in main (argc=3, argv=0xbffff904, envp=0xbffff914) at dhcpd.c:614 #13 0x42015574 in __libc_start_main () from /lib/tls/libc.so.6 (gdb) Note that the daemon may actually crash at a different location depending of the first corrupted structure it meets and therefore, of the size of the malicious option sent, along with the context (type of packet, leases in use etc...) Problems in the source: I have spent quite some time to find out where the overflow actually takes its roots, here are my findings: file server/dhcp.c: function dhcprequest : char msgbuf [1024]; /* XXX */ char *s; .... if (lease && lease -> client_hostname && db_printable (lease -> client_hostname)) s = lease -> client_hostname; else s = (char *)0; ...... sprintf (msgbuf, "DHCPREQUEST for %s%s from %s %s%s%svia %s", piaddr (cip), smbuf, (packet -> raw -> htype ? print_hw_addr (packet -> raw -> htype, packet -> raw -> hlen, packet -> raw -> chaddr) : (lease ? print_hex_1 (lease -> uid_len, lease -> uid, lease -> uid_len) : "<no identifier>")), s ? "(" : "", s ? s : "", s ? ") " : "", packet -> raw -> giaddr.s_addr ? inet_ntoa (packet -> raw -> giaddr) : packet -> interface -> name); To summarize, s is referencing the reassembled hostname option passed to the daemon, afterwhat it is used as is in sprintf and stored in msgbuf (fixed size) without any length checking. local msgbuf can obviously be overrun, corrupting various structures in stack and eventually causing the server to crash Note that the call to db_printable( ), filtering hostname, may render the task harder to root a server but likely not impossible. Also being able to corrupt structures like *lease or *oc may have interesting side effects from an attacker perspective. void dhcprequest (packet, ms_nulltp, ip_lease) struct packet *packet; int ms_nulltp; struct lease *ip_lease; { struct lease *lease; struct iaddr cip; struct iaddr sip; struct subnet *subnet; int ours = 0; struct option_cache *oc; struct data_string data; int status; char msgbuf [1024]; /* XXX */ char *s; char smbuf [19]; .... the very same problem is present in dhcpdiscover( ), dhcpdecline( ), dhcprequest( ) , dhcprelease( ), ... please look at the diff in unified format, attached to this email, for a detailed list

The DHCP daemon (DHCPD) for ISC DHCP 3.0.1rc12 and 3.0.1rc13, when compiled in environments that do not provide the vsnprintf function, uses C include files that define vsnprintf to use the less safe vsprintf function, which can lead to buffer overflow vulnerabilities that enable a denial of service (server crash) and possibly execute arbitrary code. The Internet Systems Consortium's (ISC) Dynamic Host Configuration Protocol (DHCP) 3 application contains a buffer overflow vulnerability. As a result, you may gain administrative privileges on vulnerable systems. On systems which lack the vsnprintf() library call, ISC DHCPD defines vsnprintf as: #define vsnprintf(buf, size, fmt, list) vsprintf (buf, fmt, list) This definition discards the size argument to the function, potentially allowing any occurrence of vsnprintf() to be exploitable, by overflowing whatever intended buffer is passed to the library call. Other locations in DHCPD utilizing this function may be exploitable. This issue is reported to affect ISC DHCPD versions 3.0.1rc12 and 3.0.1rc13. ISC DHCP calls vsnprintf() to write format log file strings. ---------------------------------------------------------------------- Secunia is proud to announce the availability of the Secunia Software Inspector. The Secunia Software Inspector is a free service that detects insecure versions of software that you may have installed in your system. When insecure versions are detected, the Secunia Software Inspector also provides thorough guidelines for updating the software to the latest secure version from the vendor. Try it out online: http://secunia.com/software_inspector/ ---------------------------------------------------------------------- TITLE: XEROX WorkCentre Products Multiple Vulnerabilities SECUNIA ADVISORY ID: SA23265 VERIFY ADVISORY: http://secunia.com/advisories/23265/ CRITICAL: Moderately critical IMPACT: Security Bypass, Manipulation of data, Exposure of system information, Exposure of sensitive information, DoS, System access WHERE: >From local network OPERATING SYSTEM: Xerox WorkCentre http://secunia.com/product/4746/ Xerox WorkCentre Pro http://secunia.com/product/4553/ DESCRIPTION: Some vulnerabilities and weaknesses have been reported in various XEROX WorkCentre products, which can be exploited by malicious people to bypass certain security restrictions, expose certain sensitive information, cause a DoS (Denial of Service), and compromise a vulnerable system. 1) Input passed to the TCP/IP hostname, the Scan-to-mailbox folder name field, and to the Microsoft Network configuration parameters in the Web User interface is not properly sanitised. 2) Certain browser settings may allow unauthorized access. Additionally, an unspecified vulnerability in the Web User Interface can be exploited to bypass the authentication. 3) The TFTP/BOOTP auto configuration can be exploited to manipulate certain configuration settings. 4) An unspecified error within the handling of email signatures can be exploited to display improper items. 5) Requests to web services can be made through HTTP instead of HTTPS. Other unspecified HTTP security issues and a httpd.conf misconfiguration are also reported. 6) An error within the Scan-to-mailbox feature can be exploited to anonymously download secure files. Additionally, it is possible to anonymously download audit log files. 7) The system fails to keep accurate time resulting in incorrect time stamps in audit logs. 8) The embedded Samba version contains various vulnerabilities. Additionally, the SMB "Homes" share is visible and it's possible to browse the file system via SMB. 9) The SNMP agent does not return errors for non-writable objects. Additionally, authentication failure traps can't be enabled or generated. 10) An error within ops3-dmn can be exploited to crash the service and cause a DoS by attaching a PS script. 11) It is possible to bypass the security restriction and boot Alchemy by e.g. using an USB thumb drive. 12) The "Validate Repository SSL Certificate" scan feature does not verify the FQDN. 13) Certain problems with the Immediate Image Overwrite and On Demand Image Overwrite, a Postgress port block, and a http TRACE XSS attack in the network controller are reported. 14) Two boundary errors within the embedded DHCP implementation can be exploited to cause a buffer overflow, which may allow execution of arbitrary code. SOLUTION: Apply updated software (see vendor advisories for detailed instructions). PROVIDED AND/OR DISCOVERED BY: Reported by the vendor. ORIGINAL ADVISORY: Xerox: http://www.xerox.com/downloads/usa/en/c/cert_XRX06_006_v1b.pdf http://www.xerox.com/downloads/usa/en/c/cert_XRX06_004_v11.pdf ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/ Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. ---------------------------------------------------------------------- Unsubscribe: Secunia Security Advisories http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org ---------------------------------------------------------------------- . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Technical Cyber Security Alert TA04-174A Multiple Vulnerabilities in ISC DHCP 3 Original release date: June 22, 2004 Last revised: -- Source: US-CERT Systems Affected * ISC DHCP versions 3.0.1rc12 and 3.0.1rc13 Overview Two vulnerabilities in the ISC DHCP allow a remote attacker to cause a denial of the DHCP service on a vulnerable system. It may be possible to exploit these vulnerabilities to execute arbitrary code on the system. I. VU#317350 discusses a buffer overflow vulnerability in the temporary storage of log lines. In transactions, ISC DHCPD logs every DHCP packet along with several pieces of descriptive information. The client's DISCOVER and the resulting OFFER, REQUEST, ACK, and NAKs are all logged. In all of these messages, if the client supplied a hostname, then it is also included in the logged line. As part of the DHCP datagram format, a client may specify multiple hostname options, up to 255 bytes per option. These options are concatenated by the server. If the hostname and options contain only ASCII characters, then the string will pass non-ASCII character filters and be temporarily stored in 1024 byte fixed-length buffers on the stack. If a client supplies enough hostname options, it is possible to overflow the fixed-length buffer. VU#654390 discusses C include files for systems that do not support the bounds checking vsnprintf() function. These files define the bounds checking vsnprintf() to the non-bounds checking vsprintf() function. Since vsprintf() is a function that does not check bounds, the size is discarded, creating the potential for a buffer overflow when client data is supplied. Note that the vsnprintf() statements are defined after the vulnerable code that is discussed in VU#317350. Since the preconditions for this vulnerability are similar to those required to exploit VU#317350, these buffer overflow conditions occur sequentially in the code after the buffer overflow vulnerability discussed in VU#317350, and these issues were discovered and resolved at the same time, there is no known exploit path to exploit these buffer overflow conditions caused by VU#654390. Note that VU#654390 was discovered and exploitable once VU#317350 was resolved. For both of the vulnerabilities, only ISC DHCP 3.0.1rc12 and ISC DHCP 3.0.1rc13 are believed to be vulnerable. VU#317350 is exploitable for all operating systems and configurations. VU#654390 is only defined for the following operating systems: * AIX * AlphaOS * Cygwin32 * HP-UX * Irix * Linux * NextStep * SCO * SunOS 4 * SunOS 5.5 * Ultrix All versions of ISC DCHP 3, including all snapshots, betas, and release candidates, contain the flawed code. US-CERT is tracking these issues as VU#317350, which has been assigned CVE CAN-2004-0460, and VU#654390, which has been assigned CVE CAN-2004-0461. II. III. Solution Apply patches or upgrade These issues have been resolved in ISC DHCP 3.0.1rc14. Your vendor may provide specific patches or updates. For vendor-specific information, please see your vendor's site, or look for your vendor infomation in VU#317350 and VU#654390. As vendors report new information to US-CERT, we will update the vulnerability notes. Appendix B. References * http://www.isc.org/sw/dhcp/ * http://www.kb.cert.org/vuls/id/317350 * http://www.kb.cert.org/vuls/id/654390 _________________________________________________________________ US-CERT thanks Gregory Duchemin and Solar Designer for discovering, reporting, and resolving this vulnerability. Thanks also to David Hankins of ISC for notifying us of this vulnerability and the technical information provided to create this document. _________________________________________________________________ Feedback can be directed to the author: Jason A. Rafail _________________________________________________________________ The latest version of this document can be found at: <http://www.us-cert.gov/cas/techalerts/TA04-174A.html> _________________________________________________________________ Copyright 2004 Carnegie Mellon University. Terms of use: <http://www.us-cert.gov/legal.html> _________________________________________________________________ Revision History June 22, 2004: Initial release -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQFA2HFSXlvNRxAkFWARArH4AKDtUECQTE5HXmvsDQkwcWn9r7uAowCdGTHq AqWt3CgdEPJcIFDbJlIWQHo= =HSxN -----END PGP SIGNATURE----- . Hi, for those interested to reproduce the recent DOS attacks against ISC DHCPD 3.0.1 rc12 and rc13 as described in: http://www.kb.cert.org/vuls/id/317350 , i'm forwarding the first email i sent to ISC describing several stack based buffer overflows occuring during the creation of log messages and triggered by sending several DHCP HOSTNAME options within a single request. This mail also includes a trace of such DHCP REQUEST. Other .bss overflows related to vsnprintf and identified later during our investigations as described in: http://www.kb.cert.org/vuls/id/654390 can be triggered the exact same way. Note that the home made tool i am referencing in this email will be made available very soon and already includes ISC, INFOBLOX and DLINK dhcp vulnerabilities I will drop a note here when it is finally released. cheers, Gregory Special thanks to Solar Designer and David W.Hankins (ISC) --- Original email ------ Summary: i have discovered several stack based overflow in your dhcp-3.0.1rc12 and rc13 (may be others, have not checked) these vulnerabilities can be easily triggered by crafting a dhcp discover or request packet which carries several hostname dhcp options that ,once reassembled by the daemon (as explained in rfc 3396), overflow a stack based variable causing the daemon to crash. I believe than one might execute code remotely on the server with the same user account dhcpd is running with, root in most cases. I have been able at some points during the tests, to control eip' 4 bytes (intel 32bits arch), it was during the ddns forward update operation. Note that all tests have been made on a linux 2.4.20-24.9 using a home made tool to generate custom dhcp traffic Now an example: see dhcpd.conf in attachment if you need it. structure of an offending packet (case of a dhcp request based attack) >> DHCP request >> from 0.0.0.0:68 (ff:ff:ff:ff:ff:ff) to 255.255.255.255:67 (ff:ff:ff:ff:ff:ff) >> op : BOOT REQUEST (1) >> htype : Ethernet (10Mb) (1) >> hlen : 6 >> hops : 0 >> xid : 0x00000000 >> secs : 1 >> flags : UNICAST (0x0000) >> ciaddr : 0.0.0.0 >> yiaddr : 0.0.0.0 >> siaddr : 255.255.255.255 >> giaddr : 0.0.0.0 >> chaddr : ff:ff:ff:ff:ff:ff >> sname : >> file : >> cookie : 0x63825363 (RFC 1497/2132, BOOTP Vendor informations/DHCP options) >> DHCP option (053 [0x35]) : MESSAGE_TYPE : REQUEST >> BOOTP option (012 [0x0c]) : HOSTNAME : AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA >> BOOTP option (012 [0x0c]) : HOSTNAME : AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA >> BOOTP option (012 [0x0c]) : HOSTNAME : AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA >> BOOTP option (012 [0x0c]) : HOSTNAME : AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA >> BOOTP option (012 [0x0c]) : HOSTNAME : AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA >> BOOTP option (012 [0x0c]) : HOSTNAME : AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA >> BOOTP option (012 [0x0c]) : HOSTNAME : AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA >> DHCP option (050 [0x32]) : REQUEST_IP : 192.168.0.99 sending this packet to the ptraced daemon (within gdb) gives: (gdb) run -f -d The program being debugged has been started already. Start it from the beginning? (y or n) y Starting program: /usr/sbin/dhcpd -f -d Internet Software Consortium DHCP Server V3.0.1rc13 Copyright 1995-2003 Internet Software Consortium. All rights reserved. For info, please visit http://www.isc.org/products/DHCP Wrote 0 deleted host decls to leases file. Wrote 0 new dynamic host decls to leases file. Wrote 0 leases to leases file. Listening on LPF/eth0/00:0d:88:b5:95:0c/192.168.0.0/24 Sending on LPF/eth0/00:0d:88:b5:95:0c/192.168.0.0/24 Sending on Socket/fallback/fallback-net Unable to add forward map from bobAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NANAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-1022AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8 860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-284AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-2840X1.92E302E383631P-108AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-2840X1.92E302E383631P-108NANAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-2840X1.92E302E383631P-108NAN0X1.1E4600811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-2840X1. 92E302E383631P-108NAN0X1.1E4600811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA0X1.1DEF80811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-2840X1.92E302E383631P-108NAN0X1.1E4600811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA0X1.1DEF80811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA-0X1.FDE880811DEF8P+0AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-2840X1.92E302E383631P-108NAN0X1.1E4600811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA0X1.1DEF80811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA-0X1.FDE880811DEF8P+0AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA-0X1.FDE2008071205P+0A.zob.com.0X1.D8860BFFFDD5P-895NAN0X0.0000080FFFFFFP-10220X1.1E46000000003P-8940X1.23931P-2840X1.92E302E383631P-108NAN0X1.1E4600811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA0X1.1DEF80811E4FP-894AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA-0X 1.FDE880811DEF8P+0AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA-0X1.FDE2008071205P+0A.zob.com.0X1. Program received signal SIGSEGV, Segmentation fault. 0x080add76 in hash_lookup (vp=0xbfffde24, table=0x38322d50, name=0x8149dac "\001\xff\xff\xff\xff\xff\xff", len=7, file=0x80bbe25 "mdb.c", line=1662) at hash.c:363 363 hashno = (*table -> do_hash) (name, len, table -> hash_count); (gdb) backtracing stack show: (gdb) bt #0 0x080add76 in hash_lookup (vp=0xbfffde24, table=0x38322d50, name=0x8149dac "\001\xff\xff\xff\xff\xff\xff", len=7, file=0x80bbe25 "mdb.c", line=1662) at hash.c:363 #1 0x0806fb0a in lease_hash_lookup (ptr=0xbfffde24, table=0x38322d50, buf=0x8149dac "\001\xff\xff\xff\xff\xff\xff", len=7, file=0x80bbe25 "mdb.c", line=1662) at mdb.c:2055 #2 0x0806eb5b in find_lease_by_hw_addr (lp=0xbfffde24, hwaddr=0x8149dac "\001\xff\xff\xff\xff\xff\xff", hwlen=7, file=0x80bbe25 "mdb.c", line=1662) at mdb.c:1574 #3 0x0806ee5f in hw_hash_add (lease=0x8149d30) at mdb.c:1661 #4 0x0806d959 in supersede_lease (comp=0x8149d30, lease=0x811def8, commit=1, propogate=1, pimmediate=1) at mdb.c:969 #5 0x08050cb9 in ack_lease (packet=0x811d6e0, lease=0x8149d30, offer=5, when=0, msg=0xbfffdfd0 "DHCPREQUEST for 192.168.0.99 from ff:ff:ff:ff:ff:ff via eth0", ms_nulltp=0) at dhcp.c:2227 #6 0x0804d041 in dhcprequest (packet=0x811d6e0, ms_nulltp=0, ip_lease=0x0) at dhcp.c:662 #7 0x0804c37d in dhcp (packet=0x811d6e0) at dhcp.c:224 #8 0x08088d9a in do_packet (interface=0x811d568, packet=0xbfffe580, len=1430, from_port=17408, from= {len = 4, iabuf = '\0' <repeats 15 times>}, hfrom=0xbffff5b0) at options.c:2237 #9 0x08096718 in got_one (h=0x811d568) at discover.c:785 #10 0x080a937e in omapi_one_dispatch (wo=0x0, t=0x0) at dispatch.c:418 #11 0x0807cce3 in dispatch () at dispatch.c:103 #12 0x0804add1 in main (argc=3, argv=0xbffff904, envp=0xbffff914) at dhcpd.c:614 #13 0x42015574 in __libc_start_main () from /lib/tls/libc.so.6 (gdb) Note that the daemon may actually crash at a different location depending of the first corrupted structure it meets and therefore, of the size of the malicious option sent, along with the context (type of packet, leases in use etc...) Problems in the source: I have spent quite some time to find out where the overflow actually takes its roots, here are my findings: file server/dhcp.c: function dhcprequest : char msgbuf [1024]; /* XXX */ char *s; .... if (lease && lease -> client_hostname && db_printable (lease -> client_hostname)) s = lease -> client_hostname; else s = (char *)0; ...... sprintf (msgbuf, "DHCPREQUEST for %s%s from %s %s%s%svia %s", piaddr (cip), smbuf, (packet -> raw -> htype ? print_hw_addr (packet -> raw -> htype, packet -> raw -> hlen, packet -> raw -> chaddr) : (lease ? print_hex_1 (lease -> uid_len, lease -> uid, lease -> uid_len) : "<no identifier>")), s ? "(" : "", s ? s : "", s ? ") " : "", packet -> raw -> giaddr.s_addr ? inet_ntoa (packet -> raw -> giaddr) : packet -> interface -> name); To summarize, s is referencing the reassembled hostname option passed to the daemon, afterwhat it is used as is in sprintf and stored in msgbuf (fixed size) without any length checking. local msgbuf can obviously be overrun, corrupting various structures in stack and eventually causing the server to crash Note that the call to db_printable( ), filtering hostname, may render the task harder to root a server but likely not impossible. Also being able to corrupt structures like *lease or *oc may have interesting side effects from an attacker perspective. void dhcprequest (packet, ms_nulltp, ip_lease) struct packet *packet; int ms_nulltp; struct lease *ip_lease; { struct lease *lease; struct iaddr cip; struct iaddr sip; struct subnet *subnet; int ours = 0; struct option_cache *oc; struct data_string data; int status; char msgbuf [1024]; /* XXX */ char *s; char smbuf [19]; .... the very same problem is present in dhcpdiscover( ), dhcpdecline( ), dhcprequest( ) , dhcprelease( ), ... please look at the diff in unified format, attached to this email, for a detailed list

Cross-site scripting (XSS) vulnerability in D-Link DI-614+ SOHO router running firmware 2.30, and DI-704 SOHO router running firmware 2.60B2, and DI-624, allows remote attackers to inject arbitrary script or HTML via the DHCP HOSTNAME option in a DHCP request. It is reported that the DI-614+, DI-704, and the DI-624 are susceptible to an HTML injection vulnerability in their DHCP log. An attacker who has access to the wireless, or internal network segments of the router can craft malicious DHCP hostnames, that when sent to the router, will be logged for later viewing by the administrator of the device. The injected HTML can be used to cause the administrator to make unintended changes to the configuration of the router. Other attacks may be possible. Although only the DI-614+, DI-704, and the DI-624 are reported vulnerable, code reuse across devices is common and other products may also be affected

The Web administration interface in Microsoft MN-500 Wireless Router allows remote attackers to cause a denial of service (connection refusal) via a large number of open HTTP connections. Multiple broadband routers from several different vendors, used for home and small office Internet sharing and routing are reported affected by a denial of service vulnerability in their web-based administration interfaces. The embedded web server is reportedly unable to maintain more than a small number of simultaneous TCP connections. An attacker who maintains a number of connections to port 80 of an affected device will block access to the web administration application for legitimate users. An attacker could block access to the administration interface as long as they can maintain the TCP connections. Netgear FVS318, Linksys BEFSR41, and Microsoft MN-500 devices are reported to be susceptible. NETGEAR FVS318 is a router with VPN, Microsoft MN-500 is a wireless router

Web-Based Administration in Netgear FVS318 VPN Router allows remote attackers to cause a denial of service (no new connections) via a large number of open HTTP connections. Multiple broadband routers from several different vendors, used for home and small office Internet sharing and routing are reported affected by a denial of service vulnerability in their web-based administration interfaces. The embedded web server is reportedly unable to maintain more than a small number of simultaneous TCP connections. An attacker who maintains a number of connections to port 80 of an affected device will block access to the web administration application for legitimate users. An attacker could block access to the administration interface as long as they can maintain the TCP connections. Netgear FVS318, Linksys BEFSR41, and Microsoft MN-500 devices are reported to be susceptible. NETGEAR FVS318 is a router with VPN, Microsoft MN-500 is a wireless router. There is a problem with the embedded WEB server included by many manufacturers, and a remote attacker can use this vulnerability to conduct a denial of service attack on the management interface of the device

The D-Link DI-614 + SOHO router running in firmware 2.30 and the DI-704 SOHO router running in firmware 2.60B2 have vulnerabilities that could allow remote attackers to inject arbitrary scripts or HTML programs using the DHCP HOSTNAM option requested by DHCP. It is reported that the DI-614+, DI-704, and the DI-624 are susceptible to an HTML injection vulnerability in their DHCP log. An attacker who has access to the wireless, or internal network segments of the router can craft malicious DHCP hostnames, that when sent to the router, will be logged for later viewing by the administrator of the device. The injected HTML can be used to cause the administrator to make unintended changes to the configuration of the router. Other attacks may be possible. Although only the DI-614+, DI-704, and the DI-624 are reported vulnerable, code reuse across devices is common and other products may also be affected

Multiple unknown vulnerabilities in Linux kernel 2.4 and 2.6 allow local users to gain privileges or access kernel memory, as found by the Sparse source code checking tool. The Linux kernel is reported prone to multiple device-driver issues. These issues were found during a recent audit of the Linux kernel source. Local attackers can exploit these vulnerabilities to elevate privileges or conduct denial-of-service attacks on the system. The affected device drivers are: aironet, asus_acpi, decnet, mpu401, msnd, and pss. -----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SUSE Security Announcement Package: kernel Announcement-ID: SUSE-SA:2004:020 Date: Tuesday, Jul 2nd 2004 18:00 MEST Affected products: 8.0, 8.1, 8.2, 9.0, 9.1 SUSE Linux Database Server, SUSE eMail Server III, 3.1 SUSE Linux Enterprise Server 7, 8 SUSE Linux Firewall on CD/Admin host SUSE Linux Connectivity Server SUSE Linux Office Server Vulnerability Type: local privilege escalation Severity (1-10): 6 SUSE default package: yes Cross References: CAN-2004-0495 CAN-2004-0496 CAN-2004-0497 CAN-2004-0535 CAN-2004-0626 Content of this advisory: 1) security vulnerability resolved: - chown: users can change the group affiliation of arbitrary files to the group they belong to - missing DAC check in chown(2): local privilege escalation - overflow with signals: local denial-of-service - pss, mpu401 sound driver: read/write to complete memory - airo driver: read/write to complete memory - ALSA: copy_from_user/copy_to_user confused - acpi_asus: read from random memory - decnet: write to memory without checking - e1000 driver: read complete memory problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - icecast - sitecopy - cadaver - OpenOffice_org - tripwire - postgresql* - mod_proxy - freeswan - ipsec-tools - less - libpng - pavuk - XFree86* - kdebase3 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information Multiple security vulnerabilities are being addressed with this security update of the Linux kernel. Kernel memory access vulnerabilities are fixed in the e1000, decnet, acpi_asus, alsa, airo/WLAN, pss and mpu401 drivers. These vulnerabilities can lead to kernel memory read access, write access and local denial of service conditions, resulting in access to the root account for an attacker with a local account on the affected system. Missing Discretionary Access Control (DAC) checks in the chown(2) system call allow an attacker with a local account to change the group ownership of arbitrary files, which leads to root privileges on affected systems. An interesting variant of the missing checks is that the ownership of files in the /proc filesystem can be altered, while the changed ownership still does not allow the files to be accessed as a non-root user for to be able to exploit the vulnerability. Systems that are based on a version 2.4 kernel are not vulnerable to the /proc weakness, and exploitation of the weakness requires the use of the kernel NFS server (knfsd). If the knfsd NFS server is not activated (it is off by default), the vulnerability is not exposed. The only network-related vulnerability fixed with the kernel updates that are subject to this announcement affect the SUSE Linux 9.1 distribution only, as it is based on a 2.6 kernel. Found and reported to bugtraq by Adam Osuchowski and Tomasz Dubinski, the vulnerability allows a remote attacker to send a specially crafted TCP packet to a vulnerable system, causing that system to stall if it makes use of TCP option matching netfilter rules. In some rare configurations of the SUSE Linux 9.1 distribution, some users have experienced stalling systems during system startup. These problems are fixed with this kernel update. SPECIAL INSTALL INSTRUCTIONS: ============================== For the impatient: Run YOU (Yast2 Online Update, command "yast2 online_update" as root) to install the updates (semi) automatically, if you have a SUSE Linux 8.1 and newer system. For those who wish to install their kernel updates manually and for those who use a SUSE Linux 8.0 system: The following paragraphs will guide you through the installation process in a step-by-step fashion. The character sequence "****" marks the beginning of a new paragraph. In some cases, the steps outlined in a particular paragraph may or may not be applicable to your situation. Therefore, please make sure to read through all of the steps below before attempting any of these procedures. All of the commands that need to be executed are required to be run as the superuser (root). Each step relies on the steps before it to complete successfully. **** Step 1: Determine the needed kernel type Please use the following command to find the kernel type that is installed on your system: rpm -qf /boot/vmlinuz Following are the possible kernel types (disregard the version and build number following the name separated by the "-" character) k_deflt # default kernel, good for most systems. k_i386 # kernel for older processors and chipsets k_athlon # kernel made specifically for AMD Athlon(tm) family processors k_psmp # kernel for Pentium-I dual processor systems k_smp # kernel for SMP systems (Pentium-II and above) k_smp4G # kernel for SMP systems which supports a maximum of 4G of RAM kernel-64k-pagesize kernel-bigsmp kernel-default kernel-smp **** Step 2: Download the package for your system Please download the kernel RPM package for your distribution with the name as indicated by Step 1. The list of all kernel rpm packages is appended below. Note: The kernel-source package does not contain a binary kernel in bootable form. Instead, it contains the sources that the binary kernel rpm packages are created from. It can be used by administrators who have decided to build their own kernel. Since the kernel-source.rpm is an installable (compiled) package that contains sources for the linux kernel, it is not the source RPM for the kernel RPM binary packages. The kernel RPM binary packages for the distributions can be found at the locations below ftp://ftp.suse.com/pub/suse/i386/update/. 8.0/images/ 8.1/rpm/i586 8.2/rpm/i586 9.0/rpm/i586 9.1/rpm/i586 After downloading the kernel RPM package for your system, you should verify the authenticity of the kernel rpm package using the methods as listed in section 3) of each SUSE Security Announcement. **** Step 3: Installing your kernel rpm package Install the rpm package that you have downloaded in Steps 3 or 4 with the command rpm -Uhv --nodeps --force <K_FILE.RPM> where <K_FILE.RPM> is the name of the rpm package that you downloaded. Warning: After performing this step, your system will likely not be able to boot if the following steps have not been fully followed. If you run SUSE LINUX 8.1 and haven't applied the kernel update (SUSE-SA:2003:034), AND you are using the freeswan package, you also need to update the freeswan rpm as a dependency as offered by YOU (YaST Online Update). The package can be downloaded from ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/ **** Step 4: configuring and creating the initrd The initrd is a ramdisk that is loaded into the memory of your system together with the kernel boot image by the bootloader. The kernel uses the content of this ramdisk to execute commands that must be run before the kernel can mount its actual root filesystem. It is usually used to initialize SCSI drivers or NIC drivers for diskless operation. The variable INITRD_MODULES in /etc/sysconfig/kernel determines which kernel modules will be loaded in the initrd before the kernel has mounted its actual root filesystem. The variable should contain your SCSI adapter (if any) or filesystem driver modules. With the installation of the new kernel, the initrd has to be re-packed with the update kernel modules. Please run the command mk_initrd as root to create a new init ramdisk (initrd) for your system. On SuSE Linux 8.1 and later, this is done automatically when the RPM is installed. **** Step 5: bootloader If you run a SUSE LINUX 8.x, SLES8, or SUSE LINUX 9.x system, there are two options: Depending on your software configuration, you have either the lilo bootloader or the grub bootloader installed and initialized on your system. The grub bootloader does not require any further actions to be performed after the new kernel images have been moved in place by the rpm Update command. If you have a lilo bootloader installed and initialized, then the lilo program must be run as root. Use the command grep LOADER_TYPE /etc/sysconfig/bootloader to find out which boot loader is configured. If it is lilo, then you must run the lilo command as root. If grub is listed, then your system does not require any bootloader initialization. Warning: An improperly installed bootloader may render your system unbootable. **** Step 6: reboot If all of the steps above have been successfully completed on your system, then the new kernel including the kernel modules and the initrd should be ready to boot. The system needs to be rebooted for the changes to become active. Please make sure that all steps have completed, then reboot using the command shutdown -r now or init 6 Your system should now shut down and reboot with the new kernel. There is no workaround known. Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement. Then, install the package using the command "rpm -Fhv file.rpm" to apply the update. Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web. Update packages will be available soon. - sitecopy The sitecopy package includes a vulnerable version of the neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be available soon. - cadaver The cadaver package includes a vulnerable version of the neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be available soon. - OpenOffice_org The OpenOffice_org package includes a vulnerable version of the neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be available soon. - tripwire A format string bug in tripwire can be exploited locally to gain root permissions. New packages are available. - postgresql A buffer overflow in psqlODBC could be exploited to crash the application using it. E.g. a PHP script that uses ODBC to access a PostgreSQL database can be utilized to crash the surrounding Apache web-server. Other parts of PostgreSQL are not affected. New packages are available. - XDM/XFree86 This update resolves random listening to ports by XDM that allows to connect via the XDMCP. SUSE LINUX 9.1 is affected only. New packages are available. - mod_proxy A buffer overflow can be triggered by malicious remote servers that return a negative Content-Length value. This vulnerability can be used to execute commands remotely New packages are available. - freeswan A bug in the certificate chain authentication code could allow an attacker to authenticate any host against a FreeS/WAN server by presenting specially crafted certificates wrapped in a PKCS#7 file. The packages are currently being tested and will be available soon. - ipsec-tools The racoon daemon which is responsible for handling IKE messages fails to reject invalid or self-signed X.509 certificates which allows for man-in-the-middle attacks on IPsec tunnels established via racoon. The packages are currently being tested and will be available soon. - less This update fixes a possible symlink attack in lessopen.sh. The attack can be executed by local users to overwrite arbitrary files with the privileges of the user running less. New packages are available. - libpng This update adds a missing fix for CAN-2002-1363. New packages are available. - pavuk This update fixes a remotely exploitable buffer overflow in pavuk. Thanks to Ulf Harnhammar for reporting this to us. New packages are available. - kdebase3 This update fixes a possible attack on tmp files created at the first login of a user using KDE or at the first time running a KDE application. This bug can be exploited locally to overwrite arbitrary files with the privilege of the victim user. Just affects SUSE LINUX 9.1 New packages are available. ______________________________________________________________________________ 3) standard appendix: authenticity verification, additional information - Package authenticity verification: SUSE update packages are available on many mirror ftp servers around the world. While this service is considered valuable and important to the free and open source software community, many users wish to be certain as to be the origin of the package and its content before installing the package. There are two independent verification methods that can be used to prove the authenticity of a downloaded file or rpm package: 1) md5sums as provided in the (cryptographically signed) announcement. 2) using the internal gpg signatures of the rpm package. 1) execute the command md5sum <name-of-the-file.rpm> after you have downloaded the file from a SUSE ftp server or its mirrors. Then, compare the resulting md5sum with the one that is listed in the announcement. Since the announcement containing the checksums is cryptographically signed (usually using the key security@suse.de), the checksums offer proof of the authenticity of the package. We recommend against subscribing to security lists which cause the email message containing the announcement to be modified so that the signature does not match after transport through the mailing list software. Downsides: You must be able to verify the authenticity of the announcement in the first place. If RPM packages are being rebuilt and a new version of a package is published on the ftp server, all md5 sums for the files are useless. 2) rpm package signatures provide an easy way to verify the authenticity of an rpm package. Use the command rpm -v --checksig <file.rpm> to verify the signature of the package, where <file.rpm> is the filename of the rpm package that you have downloaded. Of course, package authenticity verification can only target an un-installed rpm package file. Prerequisites: a) gpg is installed b) The package is signed using a certain key. The public part of this key must be installed by the gpg program in the directory ~/.gnupg/ under the user's home directory who performs the signature verification (usually root). You can import the key that is used by SUSE in rpm packages for SUSE Linux by saving this announcement to a file ("announcement.txt") and running the command (do "su -" to be root): gpg --batch; gpg < announcement.txt | gpg --import SUSE Linux distributions version 7.1 and thereafter install the key "build@suse.de" upon installation or upgrade, provided that the package gpg is installed. The file containing the public key is placed at the top-level directory of the first CD (pubring.gpg) and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de . - SUSE runs two security mailing lists to which any interested party may subscribe: suse-security@suse.com - general/linux/SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an email to <suse-security-subscribe@suse.com>. suse-security-announce@suse.com - SUSE's announce-only mailing list. Only SUSE's security announcements are sent to this list. To subscribe, send an email to <suse-security-announce-subscribe@suse.com>. For general information or the frequently asked questions (faq) send mail to: <suse-security-info@suse.com> or <suse-security-faq@suse.com> respectively. ===================================================================== SUSE's security contact is <security@suse.com> or <security@suse.de>. The <security@suse.de> public key is listed below. ===================================================================== ______________________________________________________________________________ The information in this advisory may be distributed or reproduced, provided that the advisory is not modified in any way. In particular, it is desired that the clear-text signature must show proof of the authenticity of the text. SUSE Linux AG makes no warranties of any kind whatsoever with respect to the information contained in this security advisory. Type Bits/KeyID Date User ID pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team <security@suse.de> pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@suse.de> #####-----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org mQGiBDnu9IERBACT8Y35+2vv4MGVKiLEMOl9GdST6MCkYS3yEKeueNWc+z/0Kvff 4JctBsgs47tjmiI9sl0eHjm3gTR8rItXMN6sJEUHWzDP+Y0PFPboMvKx0FXl/A0d M+HFrruCgBlWt6FA+okRySQiliuI5phwqkXefl9AhkwR8xocQSVCFxcwvwCglVcO QliHu8jwRQHxlRE0tkwQQI0D+wfQwKdvhDplxHJ5nf7U8c/yE/vdvpN6lF0tmFrK XBUX+K7u4ifrZlQvj/81M4INjtXreqDiJtr99Rs6xa0ScZqITuZC4CWxJa9GynBE D3+D2t1V/f8l0smsuYoFOF7Ib49IkTdbtwAThlZp8bEhELBeGaPdNCcmfZ66rKUd G5sRA/9ovnc1krSQF2+sqB9/o7w5/q2qiyzwOSTnkjtBUVKn4zLUOf6aeBAoV6NM CC3Kj9aZHfA+ND0ehPaVGJgjaVNFhPi4x0e7BULdvgOoAqajLfvkURHAeSsxXIoE myW/xC1sBbDkDUIBSx5oej73XCZgnj/inphRqGpsb+1nKFvF+rQoU3VTRSBQYWNr YWdlIFNpZ25pbmcgS2V5IDxidWlsZEBzdXNlLmRlPohcBBMRAgAcBQI57vSBBQkD wmcABAsKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyl8sAJ98BgD40zw0GHJHIf6d NfnwI2PAsgCgjH1+PnYEl7TFjtZsqhezX7vZvYCIRgQQEQIABgUCOnBeUgAKCRCe QOMQAAqrpNzOAKCL512FZvv4VZx94TpbA9lxyoAejACeOO1HIbActAevk5MUBhNe LZa/qM2JARUDBRA6cGBvd7LmAD0l09kBATWnB/9An5vfiUUE1VQnt+T/EYklES3t XXaJJp9pHMa4fzFa8jPVtv5UBHGee3XoUNDVwM2OgSEISZxbzdXGnqIlcT08TzBU D9i579uifklLsnr35SJDZ6ram51/CWOnnaVhUzneOA9gTPSr+/fT3WeVnwJiQCQ3 0kNLWVXWATMnsnT486eAOlT6UNBPYQLpUprF5Yryk23pQUPAgJENDEqeU6iIO9Ot 1ZPtB0lniw+/xCi13D360o1tZDYOp0hHHJN3D3EN8C1yPqZd5CvvznYvB6bWBIpW cRgdn2DUVMmpU661jwqGlRz1F84JG/xe4jGuzgpJt9IXSzyohEJB6XG5+D0BiF0E ExECAB0FAjxqqTQFCQoAgrMFCwcKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyp1f AJ9dR7saz2KPNwD3U+fy/0BDKXrYGACfbJ8fQcJqCBQxeHvt9yMPDVq0B0W5Ag0E Oe70khAIAISR0E3ozF/la+oNaRwxHLrCet30NgnxRROYhPaJB/Tu1FQokn2/Qld/ HZnh3TwhBIw1FqrhWBJ7491iAjLR9uPbdWJrn+A7t8kSkPaF3Z/6kyc5a8fas44h t5h+6HMBzoFCMAq2aBHQRFRNp9Mz1ZvoXXcI1lk1l8OqcUM/ovXbDfPcXsUVeTPT tGzcAi2jVl9hl3iwJKkyv/RLmcusdsi8YunbvWGFAF5GaagYQo7YlF6UaBQnYJTM 523AMgpPQtsKm9o/w9WdgXkgWhgkhZEeqUS3m5xNey1nLu9iMvq9M/iXnGz4sg6Q 2Y+GqZ+yAvNWjRRou3zSE7Bzg28MI4sAAwYH/2D71Xc5HPDgu87WnBFgmp8MpSr8 QnSs0wwPg3xEullGEocolSb2c0ctuSyeVnCttJMzkukL9TqyF4s/6XRstWirSWaw JxRLKH6Zjo/FaKsshYKf8gBkAaddvpl3pO0gmUYbqmpQ3xDEYlhCeieXS5MkockQ 1sj2xYdB1xO0ExzfiCiscUKjUFy+mdzUsUutafuZ+gbHog1CN/ccZCkxcBa5IFCH ORrNjq9pYWlrxsEn6ApsG7JJbM2besW1PkdEoxak74z1senh36m5jQvVjA3U4xq1 wwylxadmmJaJHzeiLfb7G1ZRjZTsB7fyYxqDzMVul6o9BSwO/1XsIAnV1uuITAQY EQIADAUCOe70kgUJA8JnAAAKCRCoTtronIAKyksiAJsFB3/77SkH3JlYOGrEe1Ol 0JdGwACeKTttgeVPFB+iGJdiwQlxasOfuXyITAQYEQIADAUCPGqpWQUJCgCCxwAK CRCoTtronIAKyofBAKCSZM2UFyta/fe9WgITK9I5hbxxtQCfX+0ar2CZmSknn3co SPihn1+OBNyZAQ0DNuEtBAAAAQgAoCRcd7SVZEFcumffyEwfLTcXQjhKzOahzxpo omuF+HIyU4AGq+SU8sTZ/1SsjhdzzrSAfv1lETACA+3SmLr5KV40Us1w0UC64cwt A46xowVq1vMlH2Lib+V/qr3b1hE67nMHjysECVx9Ob4gFuKNoR2eqnAaJvjnAT8J /LoUC20EdCHUqn6v+M9t/WZgC+WNR8cq69uDy3YQhDP/nIan6fm2uf2kSV9A7ZxE GrwsWl/WX5Q/sQqMWaU6r4az98X3z90/cN+eJJ3vwtA+rm+nxEvyev+jaLuOQBDf ebh/XA4FZ35xmi+spdiVeJH4F/ubaGlmj7+wDOF3suYAPSXT2QAFEbQlU3VTRSBT ZWN1cml0eSBUZWFtIDxzZWN1cml0eUBzdXNlLmRlPokBFQMFEDbhLUfkWLKHsco8 RQEBVw4H/1vIdiOLX/7hdzYaG9crQVIk3QwaB5eBbjvLEMvuCZHiY2COUg5QdmPQ 8SlWNZ6k4nu1BLcv2g/pymPUWP9fG4tuSnlUJDrWGm3nhyhAC9iudP2u1YQY37Gb B6NPVaZiYMnEb4QYFcqv5c/r2ghSXUTYk7etd6SW6WCOpEqizhx1cqDKNZnsI/1X 11pFcO2N7rc6byDBJ1T+cK+F1Ehan9XBt/shryJmv04nli5CXQMEbiqYYMOu8iaA 8AWRgXPCWqhyGhcVD3LRhUJXjUOdH4ZiHCXaoF3zVPxpeGKEQY8iBrDeDyB3wHmj qY9WCX6cmogGQRgYG6yJqDalLqrDOdmJARUDBRA24S0Ed7LmAD0l09kBAW04B/4p WH3f1vQn3i6/+SmDjGzUu2GWGq6Fsdwo2hVM2ym6CILeow/K9JfhdwGvY8LRxWRL hn09j2IJ9P7H1Yz3qDf10AX6V7YILHtchKT1dcngCkTLmDgC4rs1iAAl3f089sRG BafGPGKv2DQjHfR1LfRtbf0P7c09Tkej1MP8HtQMW9hPkBYeXcwbCjdrVGFOzqx+ AvvJDdT6a+oyRMTFlvmZ83UV5pgoyimgjhWnM1V4bFBYjPrtWMkdXJSUXbR6Q7Pi RZWCzGRzwbaxqpl3rK/YTCphOLwEMB27B4/fcqtBzgoMOiaZA0M5fFoo54KgRIh0 zinsSx2OrWgvSiLEXXYKiEYEEBECAAYFAjseYcMACgkQnkDjEAAKq6ROVACgjhDM /3KM+iFjs5QXsnd4oFPOnbkAnjYGa1J3em+bmV2aiCdYXdOuGn4ZiQCVAwUQN7c7 whaQN/7O/JIVAQEB+QP/cYblSAmPXxSFiaHWB+MiUNw8B6ozBLK0QcMQ2YcL6+Vl D+nSZP20+Ja2nfiKjnibCv5ss83yXoHkYk2Rsa8foz6Y7tHwuPiccvqnIC/c9Cvz dbIsdxpfsi0qWPfvX/jLMpXqqnPjdIZErgxpwujas1n9016PuXA8K3MJwVjCqSKI RgQQEQIABgUCOhpCpAAKCRDHUqoysN/3gCt7AJ9adNQMbmA1iSYcbhtgvx9ByLPI DgCfZ5Wj+f7cnYpFZI6GkAyyczG09sE= =LRKC - -----END PGP PUBLIC KEY BLOCK----- - -- - - | Roman Drahtm\xfcller <draht@suse.de> // "You don't need eyes to see, | SUSE Linux AG - Security Phone: // you need vision!" | N\xfcrnberg, Germany +49-911-740530 // Maxi Jazz, Faithless | - - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iQEVAwUBQOWPL3ey5gA9JdPZAQFFzQf+Mo5WmO40BDHakn4qD5rAcfU6H/0rhMpy Bi8r+g6GoSp/m2Zy+1O0Qn3jVb/iirVlnHH3DND1r/GunM3c5CTaMYt2Bt7PTOdt OsjD41lbiFlHDmmmaodROQvcrz7T67YU0gCtSKJdDfs2ATiiUOcyUQZNfi/PiEqD jwmKpP5c1NXSXPSwZ2f430itJA5iUqqVBeB1WHn63kOnIKtHBJ9c6uw3rZ99t1OA iud3L+VQSycb8xQSlOsuiaYW1S236VsogKWRbqY76eo7E2AnVQlMpcZkyW91/vfT WntQlZJAaGFX1q/IyGy+PGFPUoJjNc7H6jy5ZqJqXR5Sb0KrHfadCQ== =24bz -----END PGP SIGNATURE-----