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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2007.0572 -- [UNIX/Linux] Updated tcpdump packages fix BGP dissector vulnerability 30 July 2007 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: tcpdump 3.9.6 and prior Operating System: UNIX variants (UNIX, Linux, OSX) Impact: Execute Arbitrary Code/Commands Access: Remote/Unauthenticated CVE Names: CVE-2007-3798 Original Bulletin: http://marc.info/?l=full-disclosure&m=118566260713682&w=2 Comment: This advisory references vulnerabilities in products which run on platforms other than Gentoo Linux. It is recommended that administrators running tcpdump check for an updated version of the software for their operating system. Exploit code for this vulnerability has been publicly released. - --------------------------BEGIN INCLUDED TEXT-------------------- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200707-14 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: tcpdump: Integer overflow Date: July 28, 2007 Bugs: #184815 ID: 200707-14 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A vulnerability has been discovered in tcpdump, allowing for the execution of arbitrary code, possibly with root privileges. Background ========== tcpdump is a tool for capturing and inspecting network traffic. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-analyzer/tcpdump < 3.9.5-r3 >= 3.9.5-r3 Description =========== mu-b from Digital Labs discovered that the return value of a snprintf() call is not properly checked before being used. This could lead to an integer overflow. Impact ====== A remote attacker could send specially crafted BGP packets on a network being monitored with tcpdump, possibly resulting in the execution of arbitrary code with the privileges of the user running tcpdump, which is usually root. Workaround ========== There is no known workaround at this time. Resolution ========== All tcpdump users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-analyzer/tcpdump-3.9.5-r3" References ========== CVE-2007-3798 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3798 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200707-14.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2007 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBRq1JeCh9+71yA2DNAQIoBwP+POV3Pa7K1sn5uu2Lz7L2jqjQMjUl62U/ 3R6JeiLWQHU0o7jCEhdKOl5+ax/xQGsx38coAVgZPKPSHidKDfBCKHDeWffOgrXz 5LutfW+uny96W6d8MCLDAy9pm0N5sIzNyjBLBAWI1cY0fQgcIZCPzgg5jY0bcwU3 blBwZRqtbmg= =DcWJ -----END PGP SIGNATURE-----