Gentoo: 201210-06 Libav: Multiple vulnerabilities
Posted by Benjamin D. Thomas   
Gentoo Multiple vulnerabilities have been found in Libav, allowing attackers to execute arbitrary code or cause Denial of Service.
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Gentoo Linux Security Advisory                           GLSA 201210-06
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                                            http://security.gentoo.org/
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 Severity: Normal
    Title: Libav: Multiple vulnerabilities
     Date: October 20, 2012
     Bugs: #408555, #422537
       ID: 201210-06

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Synopsis
========

Multiple vulnerabilities have been found in Libav, allowing attackers
to execute arbitrary code or cause Denial of Service.

Background
==========

Libav is a complete solution to record, convert and stream audio and
video.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  media-video/libav            < 0.8.3                    >= 0.8.3

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

Multiple vulnerabilities have been discovered in Libav. Please review
the CVE identifiers referenced below for details.

Impact
======

A remote attacker could entice a user to open a specially crafted media
file in an application linked against Libav, possibly resulting in
execution of arbitrary code with the privileges of the application or a
Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Libav users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=media-video/libav-0.8.3"

References
==========

[  1 ] CVE-2011-3929
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3929
[  2 ] CVE-2011-3936
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3936
[  3 ] CVE-2011-3937
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3937
[  4 ] CVE-2011-3937
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3937
[  5 ] CVE-2011-3940
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3940
[  6 ] CVE-2011-3945
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3945
[  7 ] CVE-2011-3947
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3947
[  8 ] CVE-2011-3951
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3951
[  9 ] CVE-2011-3952
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3952
[ 10 ] CVE-2012-0848
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0848
[ 11 ] CVE-2012-0851
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0851
[ 12 ] CVE-2012-0852
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0852
[ 13 ] CVE-2012-0853
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0853
[ 14 ] CVE-2012-0858
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0858
[ 15 ] CVE-2012-0947
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0947

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

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

 http://security.gentoo.org/glsa/glsa-201210-06.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 2012 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