[ GLSA 200708-02 ] Xvid: Array indexing vulnerabilities

From: Raphael Marichez <falco@gentoo.org>
To: gentoo-announce@gentoo.org
Cc: bugtraq@securityfocus.com,full-disclosure@lists.grok.org.uk,security-alerts@linuxsecurity.com
Subject: [ GLSA 200708-02 ] Xvid: Array indexing vulnerabilities
Date:


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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
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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