GLSA 200708-02 Xvid: Array indexing vulnerabilities
Posted on: 08/09/2007 12:40 AM

A new security update has been released for Gentoo Linux - Xvid: Array indexing vulnerabilities. Here the announcement:

Gentoo Linux Security Advisory GLSA 200708-02
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http://security.gentoo.org/
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Severity: Normal
Title: Xvid: Array indexing vulnerabilities
Date: August 08, 2007
Bugs: #183145
ID: 200708-02

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Synopsis
========

Several array indexing vulnerabilities were discovered in Xvid,
possibly allowing for the remote execution of arbitrary code.

Background
==========

Xvid is a popular open source video codec licensed under the GPL.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-libs/xvid lt; 1.1.3 gt;= 1.1.3

Description
===========

Trixter Jack discovered an array indexing error in the
get_intra_block() function in the file src/bitstream/mbcoding.c. The
get_inter_block_h263() and get_inter_block_mpeg() functions in the same
file were also reported as vulnerable.

Impact
======

An attacker could exploit these vulnerabilities to execute arbitrary
code by tricking a user or automated system into processing a malicious
video file with an application that makes use of the Xvid library.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Xvid users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=media-libs/xvid-1.1.3"

References
==========

[ 1 ] CVE-2007-3329
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3329

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200708-02.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



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