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Gentoo Linux Security Advisory                           GLSA 201312-04
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                                            http://security.gentoo.org/
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 Severity: Normal
    Title: libtheora: Arbitrary code execution
     Date: December 03, 2013
     Bugs: #298039
       ID: 201312-04

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Synopsis
========

An integer overflow in libtheora might allow remote attackers to
execute arbitrary code or cause a Denial of Service condition.

Background
==========

libtheora is the reference implementation of Theora, a free and open
video compression format from the Xiph.org Foundation.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  media-libs/libtheora         < 1.1.1                    >= 1.1.1

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

An integer overflow flaw has been discovered in libtheora.

Impact
======

A remote attacker could execute arbitrary code or cause a Denial of
Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libtheora users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=media-libs/libtheora-1.1.1"

Packages which depend on this library may need to be recompiled. Tools
such as revdep-rebuild may assist in identifying some of these
packages.

References
==========

[ 1 ] CVE-2009-3389
      http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-3389

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

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

 http://security.gentoo.org/glsa/glsa-201312-04.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
https://bugs.gentoo.org.

License
=======

Copyright 2013 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