A new security update has been released for Gentoo Linux - tcpdump: Integer overflow. Here the announcement:
Gentoo Linux Security Advisory GLSA 200707-14
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http://security.gentoo.org/
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Severity: High
Title: tcpdump: Integer overflow
Date: July 28, 2007
Bugs: #184815
ID: 200707-14
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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
=================
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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
==========
[ 1 ] 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
