ID

VAR-200712-0398

CVE

CVE-2007-3876

TITLE

Apple Mac OS X of SMB Multiple buffer overflow vulnerabilities

DESCRIPTION

Stack-based buffer overflow in SMB in Apple Mac OS X 10.4.11 allows local users to execute arbitrary code via (1) a long workgroup (-W) option to mount_smbfs or (2) an unspecified manipulation of the command line to smbutil. Mac OS X is prone to a local stack-based buffer-overflow vulnerability because it fails to properly bounds-check user-supplied data before copying it to an insufficiently sized memory buffer. This issue affects certain SMB (Server Message Block protocol) applications. An attacker can exploit this issue to execute arbitrary code with superuser privileges. Successful attacks will completely compromise affected computers. Failed exploit attempts will result in a denial of service. Mac OS X and Mac OS X Server 10.4.11 and prior versions are vulnerable. NOTE: This issue was originally covered in BID 26910 (Apple Mac OS X v10.5.1 2007-009 Multiple Security Vulnerabilities). Flash Player is a very popular FLASH player. There is a vulnerability in the way that the Flash Player plug-in creates TCP sessions with other hosts through (SWF) movies. Attackers may use this vulnerability to lure users to connect to malicious files. After receiving the allow-access-from element in the cross-domain policy XML document, Flash Player does not bind the hostname to a single IP address, and the Flash Socket class does not use the browser's DNS binding, so the attacker can pass A DNS rebinding attack causes the victim user's machine to create a TCP session to an arbitrary host. BACKGROUND The mount_smbfs utility is used to mount a remote SMB share locally. It is installed set-uid root, so as to allow unprivileged users to mount shares, and is present in a default installation on both the Server and Desktop versions of Mac OS X. For more information visit the following URL. http://developer.apple.com/documentation/Darwin/Reference/ManPages/man8/mount_smbfs.8.html II. The vulnerability exists in a portion of code responsible for parsing command line arguments. When processing the -W option, which is used to specify a workgroup name, the option's argument is copied into a fixed sized stack buffer without any checks on its length. This leads to a trivially exploitable stack based buffer overflow. III. IV. Previous versions may also be affected. V. WORKAROUND Removing the set-uid bit from the mount_smbfs binary will prevent exploitation. However, non-root users will be unable to use the program. VI. More information is available at the following URL. http://docs.info.apple.com/article.html?artnum=307179 VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2007-3876 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems. VIII. DISCLOSURE TIMELINE 07/16/2007 Initial vendor notification 07/17/2007 Initial vendor response 12/17/2007 Coordinated public disclosure IX. CREDIT This vulnerability was discovered by Sean Larsson of VeriSign iDefense Labs. Get paid for vulnerability research http://labs.idefense.com/methodology/vulnerability/vcp.php Free tools, research and upcoming events http://labs.idefense.com/ X. LEGAL NOTICES Copyright \xa9 2007 iDefense, Inc. Permission is granted for the redistribution of this alert electronically. It may not be edited in any way without the express written consent of iDefense. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please e-mail customerservice@idefense.com for permission. Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information. I. Further details are available in the related vulnerability notes. These products include: * Adobe Flash * Adobe Shockwave * GNU Tar II. Impact The impacts of these vulnerabilities vary. Potential consequences include arbitrary code execution, sensitive information disclosure, surreptitious video conference initiation, and denial of service. This and other updates are available via Software Update or via Apple Downloads. Please send email to <cert@cert.org> with "TA07-352A Feedback VU#905292" in the subject. _________________________________________________________________ For instructions on subscribing to or unsubscribing from this mailing list, visit <http://www.us-cert.gov/cas/signup.html>. _________________________________________________________________ Produced 2007 by US-CERT, a government organization. Terms of use: <http://www.us-cert.gov/legal.html> _________________________________________________________________ Revision History December 18, 2007: Initial release -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iQEVAwUBR2hR0fRFkHkM87XOAQL7Egf+NvQEwnN2IGDdDwMEb9C2RDw58FXq0EMZ 7SRO8qbrM0c+G3apLFlmCCivWpGHqms2hzrSeon/Ym1YstHQOQeoJANmsHA3SyKz Wx8TIG10jEiAgytMuyrYjf0w3alXBEsDgXcu8FRc5Z4dg7osMPe7Lco7vVfMvoZG IpEEQu98zxh2p+Vhf1XKr9UfUnkD4O88rRAs+M1oDZd46GH+JvkYLgLCmkMSwIcs Vi4M7J+KHUBBkaMZYjnp+YqRwNDq9sGskVEOVDMk9OXw7VhAR7Kf8/zo9Tt1h3P0 h9JeMBHHb0M0MEtYHx/7JxpleXS3LtyiL0kDb9cbMjxU0kKK9SKb/Q== =Y1jd -----END PGP SIGNATURE----- . ---------------------------------------------------------------------- 2003: 2,700 advisories published 2004: 3,100 advisories published 2005: 4,600 advisories published 2006: 5,300 advisories published How do you know which Secunia advisories are important to you? The Secunia Vulnerability Intelligence Solutions allows you to filter and structure all the information you need, so you can address issues effectively. 1) A format string error in the URL handler of Address Book can be exploited to execute arbitrary code when a user views a specially crafted web page. 2) An error in the handling of downloaded files in CFNetwork can be exploited via directory traversal attacks to automatically download files to arbitrary folders when a user is enticed to visit a specially crafted web page. 3) An unspecified error exists in ColorSync when processing images with an embedded ColorSync profile, which can be exploited to cause a memory corruption. Successful exploitation may allow execution of arbitrary code. 4) A race condition exists in the "CFURLWriteDataAndPropertiesToResource" API, which can lead to files being created with insecure permissions. 5) A boundary error exists in the printer driver for CUPS. This can be exploited to cause a buffer overflow and allows an admin user to execute arbitrary code with system privileges by passing a specially crafted URI to the CUPS service. 6) A boundary error in CUPS can be exploited by malicious people to compromise a vulnerable system. For more information: SA27233 7) An integer underflow error in the CUPS backend in the handling of SNMP responses can be exploited to cause a stack-based buffer overflow by sending a specially crafted SNMP response. Successful exploitation allows execution of arbitrary code, but requires that SNMP is enabled. 8) A boundary error in Desktop Services can be exploited to cause a heap-based buffer overflow when a user opens a directory containing a specially crafted .DS_Store file. Successful exploitation may allow execution of arbitrary code. 9) An input validation error in tar can be exploited by malicious people to compromise a user's system. For more information: SA26573 10) An unspecified error in iChat can be exploited by malicious people on the local network to initiate a video connection without the user's approval. 11) An unspecified error exists within IO Storage Family when handling GUID partition maps within a disk image. 12) Launch Services does not handle HTML files as potentially unsafe content. This can be exploited to disclose sensitive information or conduct cross-site scripting attacks by enticing a user to open a specially crafted HTML file. 13) A vulnerability in Mail in the handling of unsafe file types can be exploited to compromise a user's system. For more information: SA27785 14) An error in Mail can cause the application to default to SMTP plaintext authentication if the server supports only MD5 Challenge-Response authentication and plaintext authentication. 15) Some vulnerabilities in perl can be exploited by malicious people to compromise a vulnerable system. For more information: SA27546 16) A security issue in python can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a vulnerable system. For more information: SA26837 17) Plug-ins in Quick Look are not restricted from making network requests. This may lead to the disclosure of sensitive information when previewing an HTML file. 18) URLs contained in movie files may be accessed when creating an icon for a movie file or previewing a movie file using QuickLook. 19) Some security issues in ruby can be exploited by malicious people to conduct spoofing attacks. For more information: SA26985 20) Some vulnerabilities and a security issue in Ruby on Rails can be exploited by malicious people to disclose sensitive information or to conduct session fixation attacks. For more information: SA25699 SA27781 21) An error in Safari allows a page to navigate the subframes of any other page. This can be exploited to conduct cross-site scripting attacks and to disclose sensitive information when a user visits a specially crafted web page. 22) An unspecified error in Safari in the handling of RSS feeds can be exploited to cause a memory corruption and may allow execution of arbitrary code when a user accesses a specially crafted URL. 23) Some boundary errors in Samba can be exploited by malicious people to compromise a vulnerable system. For more information: SA27450 24) Some boundary errors in the Shockwave Plug-in can be exploited by malicious people to compromise a user's system. 26) The distribution definition file used in Software Update is received by using HTTP without any authentication and allows execution of arbitrary commands. Successful exploitation requires a MitM (Man-in-the-Middle) attack. 27) An error due to an insecure file operation exists in the handling of output files in SpinTracer. 28) An unspecified error exists in the Microsoft Office Spotlight Importer, which can be exploited to cause a memory corruption when a user downloads a specially crafted .xls file. Successful exploitation may allow execution of arbitrary code. 29) Some vulnerabilities in tcpdump can be exploited by malicious people to cause a DoS or to compromise a user's system. For more information: SA24318 SA26135 30) Some vulnerabilities exist the Perl Compatible Regular Expressions (PCRE) library used by XQuery, which can potentially be exploited to compromise a vulnerable system. For more information: SA27543 SOLUTION: Apply Security Update 2007-009. Security Update 2007-009 (10.4.11 Universal): http://www.apple.com/support/downloads/securityupdate200700910411universal.html Security Update 2007-009 (10.4.11 PPC): http://www.apple.com/support/downloads/securityupdate200700910411ppc.html Security Update 2007-009 (10.5.1): http://www.apple.com/support/downloads/securityupdate20070091051.html PROVIDED AND/OR DISCOVERED BY: 2) The vendor credits Sean Harding. 3) The vendor credits Tom Ferris, Adobe Secure Software Engineering Team (ASSET). 5) The vendor credits Dave Camp, Critical Path Software. 7) The vendor credits Wei Wang, McAfee Avert Labs. 12) The vendor credits Michal Zalewski, Google Inc. 15) The vendor credits Tavis Ormandy and Will Drewry, Google Security Team. 18) The vendor credits Lukhnos D. Liu, Lithoglyph Inc. 26) Moritz Jodeit. 27) The vendor credits Kevin Finisterre, DigitalMunition ORIGINAL ADVISORY: Apple: http://docs.info.apple.com/article.html?artnum=307179 OTHER REFERENCES: SA19218: http://secunia.com/advisories/19218/ SA24318: http://secunia.com/advisories/24318/ SA25699: http://secunia.com/advisories/25699/ SA26135: http://secunia.com/advisories/26135/ SA26573: http://secunia.com/advisories/26573/ SA26837: http://secunia.com/advisories/26837/ SA26985: http://secunia.com/advisories/26985/ SA27233: http://secunia.com/advisories/27233/ SA27450: http://secunia.com/advisories/27450/ SA27543: http://secunia.com/advisories/27543/ SA27546: http://secunia.com/advisories/27546/ SA27781: http://secunia.com/advisories/27781/ SA27785: http://secunia.com/advisories/27785/ ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities. 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AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

buffer overflow

CONFIGURATIONS

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Collin Jackson collinj@cs.stanford.edu

SOURCES

LAST UPDATE DATE

2025-04-10T20:45:36.615000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE