[ GLSA 200909-02 ] libvorbis: User-assisted execution of arbitrary code

[Alex Legler <a3li () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200909-02
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: libvorbis: User-assisted execution of arbitrary code
      Date: September 07, 2009
      Bugs: #280590
        ID: 200909-02

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Synopsis
========

A processing error in libvorbis might result in the execution of
arbitrary code or a Denial of Service.

Background
==========

libvorbis is the reference implementation of the Xiph.org Ogg Vorbis
audio file format. It is used by many applications for playback of Ogg
Vorbis files.

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

    -------------------------------------------------------------------
     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  1  media-libs/libvorbis       < 1.2.3                       >= 1.2.3

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

Lucas Adamski reported that libvorbis does not correctly process file
headers, related to static mode headers and encoding books.

Impact
======

A remote attacker could entice a user to play a specially crafted OGG
Vorbis file using an application that uses libvorbis, possibly
resulting in the execution of arbitrary code with the privileges of the
user running the application, or a Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libvorbis users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose =media-libs/libvorbis-1.2.3

References
==========

  [ 1 ] CVE-2009-2663
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2663

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

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

  http://security.gentoo.org/glsa/glsa-200909-02.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
https://bugs.gentoo.org.

License
=======

Copyright 2009 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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