From: Raphael Marichez (falcogentoo.org)
Date: Wed Aug 08 2007 - 16:26:36 CDT

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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 < 1.1.3 >= 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 ">=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
securitygentoo.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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