ID

VAR-200609-0823

CVE

CVE-2006-3738

TITLE

OpenSSL SSLv2 client code fails to properly check for NULL

DESCRIPTION

Buffer overflow in the SSL_get_shared_ciphers function in OpenSSL 0.9.7 before 0.9.7l, 0.9.8 before 0.9.8d, and earlier versions has unspecified impact and remote attack vectors involving a long list of ciphers. A flaw in the OpenSSL library could allow a remote attacker to cause a denial of service on an affected application. Multiple RSA implementations fail to properly handle RSA signatures. This vulnerability may allow an attacker to forge RSA signatures. Successfully exploiting this issue may result in the execution of arbitrary machine code in the context of applications that use the affected library. Failed exploit attempts may crash applications, denying service to legitimate users. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 - ------------------------------------------------------------------- VMware Security Advisory Advisory ID: VMSA-2007-0001 Synopsis: VMware ESX server security updates Issue date: 2007-01-08 Updated on: 2007-01-08 CVE: CVE-2006-3589 CVE-2006-2937 CVE-2006-2940 CVE-2006-3738 CVE-2006-4339 CVE-2006-4343 CVE-2006-4980 - ------------------------------------------------------------------- 1. Summary: Updated ESX Patches address several security issues. 2. Relevant releases: VMware ESX 3.0.1 without patch ESX-9986131 VMware ESX 3.0.0 without patch ESX-3069097 VMware ESX 2.5.4 prior to upgrade patch 3 VMware ESX 2.5.3 prior to upgrade patch 6 VMware ESX 2.1.3 prior to upgrade patch 4 VMware ESX 2.0.2 prior to upgrade patch 4 3. Problem description: Problems addressed by these patches: a. Incorrect permissions on SSL key files generated by vmware-config (CVE-2006-3589): ESX 3.0.1: does not have this problem ESX 3.0.0: does not have this problem ESX 2.5.4: corrected by ESX 2.5.4 Upgrade Patch 3 (Build# 36502) ESX 2.5.3: corrected by ESX 2.5.3 Upgrade Patch 6 (Build# 35703) ESX 2.1.3: corrected by ESX 2.1.3 Upgrade Patch 4 (Build# 35803) ESX 2.0.2: corrected by ESX 2.0.2 Upgrade Patch 4 (Build# 35801) A possible security issue with the configuration program vmware-config which could set incorrect permissions on SSL key files. Local users may be able to obtain access to the SSL key files. The Common Vulnerabilities and Exposures project (cve.mitre.org) assigned the name CVE-2006-3589 to this issue. b. OpenSSL library vulnerabilities: ESX 3.0.1: corrected by ESX 3.0.1 Patch ESX-9986131 ESX 3.0.0: corrected by ESX 3.0.0 Patch ESX-3069097 ESX 2.5.4: corrected by ESX 2.5.4 Upgrade Patch 3 (Build# 36502) ESX 2.5.3: corrected by ESX 2.5.3 Upgrade Patch 6 (Build# 35703) ESX 2.1.3: corrected by ESX 2.1.3 Upgrade Patch 4 (Build# 35803) ESX 2.0.2: corrected by ESX 2.0.2 Upgrade Patch 4 (Build# 35801) (CVE-2006-2937) OpenSSL 0.9.7 before 0.9.7l and 0.9.8 before 0.9.8d allows remote attackers to cause a denial of service (infinite loop and memory consumption) via malformed ASN.1 structures that trigger an improperly handled error condition. (CVE-2006-2940) OpenSSL 0.9.7 before 0.9.7l, 0.9.8 before 0.9.8d, and earlier versions allows attackers to cause a denial of service (CPU consumption) via parasitic public keys with large (1) "public exponent" or (2) "public modulus" values in X.509 certificates that require extra time to process when using RSA signature verification. (CVE-2006-4339) OpenSSL before 0.9.7, 0.9.7 before 0.9.7k, and 0.9.8 before 0.9.8c, when using an RSA key with exponent 3, removes PKCS-1 padding before generating a hash, which allows remote attackers to forge a PKCS #1 v1.5 signature that is signed by that RSA key and prevents OpenSSL from correctly verifying X.509 and other certificates that use PKCS #1. The Common Vulnerabilities and Exposures project (cve.mitre.org) assigned the names CVE-2006-2937, CVE-2006-2940, CVE-2006-3738, CVE-2006-4339, and CVE-2006-4343 to these issues. c. Updated OpenSSH package addresses the following possible security issues: ESX 3.0.1: corrected by Patch ESX-9986131 ESX 3.0.0: corrected by Patch ESX-3069097 ESX 2.5.4: does not have these problems ESX 2.5.3: does not have these problems ESX 2.1.3: does not have these problems ESX 2.0.2: does not have these problems (CVE-2004-2069) sshd.c in OpenSSH 3.6.1p2 and 3.7.1p2 and possibly other versions, when using privilege separation, does not properly signal the non-privileged process when a session has been terminated after exceeding the LoginGraceTime setting, which leaves the connection open and allows remote attackers to cause a denial of service (connection consumption). (CVE-2006-0225) scp in OpenSSH 4.2p1 allows attackers to execute arbitrary commands via filenames that contain shell metacharacters or spaces, which are expanded twice. (CVE-2003-0386) OpenSSH 3.6.1 and earlier, when restricting host access by numeric IP addresses and with VerifyReverseMapping disabled, allows remote attackers to bypass "from=" and "user@host" address restrictions by connecting to a host from a system whose reverse DNS hostname contains the numeric IP address. (CVE-2006-4924) sshd in OpenSSH before 4.4, when using the version 1 SSH protocol, allows remote attackers to cause a denial of service (CPU consumption) via an SSH packet that contains duplicate blocks, which is not properly handled by the CRC compensation attack detector. NOTE: ESX by default disables version 1 SSH protocol. (CVE-2006-5051) Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free. NOTE: ESX doesn't use GSSAPI by default. (CVE-2006-5794) Unspecified vulnerability in the sshd Privilege Separation Monitor in OpenSSH before 4.5 causes weaker verification that authentication has been successful, which might allow attackers to bypass authentication. NOTE: as of 20061108, it is believed that this issue is only exploitable by leveraging vulnerabilities in the unprivileged process, which are not known to exist. The Common Vulnerabilities and Exposures project (cve.mitre.org) assigned the names CVE-2004-2069, CVE-2006-0225, CVE-2003-0386, CVE-2006-4924, CVE-2006-5051, and CVE-2006-5794 to these issues. d. Object reuse problems with newly created virtual disk (.vmdk or .dsk) files: ESX 3.0.1: does not have this problem ESX 3.0.0: does not have this problem ESX 2.5.4: corrected by ESX 2.5.4 Upgrade Patch 3 (Build# 36502) ESX 2.5.3: corrected by ESX 2.5.3 Upgrade Patch 6 (Build# 35703) ESX 2.1.3: corrected by ESX 2.1.3 Upgrade Patch 4 (Build# 35803) ESX 2.0.2: corrected by ESX 2.0.2 Upgrade Patch 4 (Build# 35801) A possible security issue with virtual disk (.vmdk or .dsk) files that are newly created, but contain blocks from recently deleted virtual disk files. Information belonging to the previously deleted virtual disk files could be revealed in newly created virtual disk files. VMware recommends the following workaround: When creating new virtual machines on an ESX Server that may contain sensitive data, use vmkfstools with the -W option. This initializes the virtual disk with zeros. NOTE: ESX 3.x defines this option as -w. e. Buffer overflow in Python function repr(): ESX 3.0.1: corrected by Patch ESX-9986131 ESX 3.0.0: corrected by ESX-3069097 ESX 2.5.4: does not have this problem ESX 2.5.3: does not have this problem ESX 2.1.3: does not have this problem ESX 2.0.2: does not have this problem A possible security issue with how the Python function repr() function handles UTF-32/UCS-4 strings. The Common Vulnerabilities and Exposures project (cve.mitre.org) assigned the name CVE-2006-4980 to this issue. 4. Solution: Please review the Patch notes for your version of ESX and verify the md5sum. ESX 3.0.1 http://www.vmware.com/support/vi3/doc/esx-9986131-patch.html md5usm: 239375e107fd4c7af57663f023863fcb ESX 3.0.0 http://www.vmware.com/support/vi3/doc/esx-3069097-patch.html md5sum: ca9947239fffda708f2c94f519df33dc ESX 2.5.4 http://www.vmware.com/support/esx25/doc/esx-254-200612-patch.html md5sum: 239375e107fd4c7af57663f023863fcb ESX 2.5.3 http://www.vmware.com/support/esx25/doc/esx-253-200612-patch.html md5sum: f90fcab28362edbf2311f3ca90cc7739 ESX 2.1.3 http://www.vmware.com/support/esx21/doc/esx-213-200612-patch.html md5sum: 7d7d0e40f4dccd5ca64b9c13a856da8f ESX 2.0.2 http://www.vmware.com/support/esx2/doc/esx-202-200612-patch.html md5sum: 925e70f28d17714c53fdbd24de64329f 5. References: ESX 3.0.0 Patch URL: http://www.vmware.com/support/vi3/doc/esx-3069097-patch.html Knowledge base URL: http://kb.vmware.com/kb/3069097 ESX 3.0.1 Patch URL: http://www.vmware.com/support/vi3/doc/esx-9986131-patch.html Knowledge base URL: http://kb.vmware.com/kb/9986131 ESX 2.5.4 Patch URL: http://www.vmware.com/support/esx25/doc/esx-254-200612-patch.html ESX 2.5.3 Patch URL: http://www.vmware.com/support/esx25/doc/esx-253-200612-patch.html ESX 2.1.3 Patch URL: http://www.vmware.com/support/esx21/doc/esx-213-200612-patch.html ESX 2.0.2 Patch URL: http://www.vmware.com/support/esx2/doc/esx-202-200612-patch.html http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3589 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2937 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2940 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3738 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4339 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4343 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4980 6. Contact: http://www.vmware.com/security VMware Security Response Policy http://www.vmware.com/vmtn/technology/security/security_response.html E-mail: security@vmware.com Copyright 2007 VMware Inc. All rights reserved. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFFovs16KjQhy2pPmkRCMfyAKCXhdGwZyXW5VzSwcOmu2NNXKN/OwCgo+CE neFG0RikD74TCYeXKW6CBy4= =9/6k -----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/

AFFECTED PRODUCTS