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Gentoo: MPlayer Multiple integer overflows Print E-mail
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Posted by Benjamin D. Thomas   
Gentoo MPlayer is vulnerable to integer overflows in FFmpeg and ASF decoding that could potentially result in the execution of arbitrary code.
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Gentoo Linux Security Advisory                           GLSA 200603-03
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: MPlayer: Multiple integer overflows
      Date: March 04, 2006
      Bugs: #115760, #122029
        ID: 200603-03

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Synopsis
========

MPlayer is vulnerable to integer overflows in FFmpeg and ASF decoding
that could potentially result in the execution of arbitrary code.

Background
==========

MPlayer is a media player capable of handling multiple multimedia file
formats.

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

    -------------------------------------------------------------------
     Package              /    Vulnerable    /              Unaffected
    -------------------------------------------------------------------
  1  media-video/mplayer     < 1.0.20060217            >= 1.0.20060217

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

MPlayer makes use of the FFmpeg library, which is vulnerable to a heap
overflow in the avcodec_default_get_buffer() function discovered by
Simon Kilvington (see GLSA 200601-06). Furthermore, AFI Security
Research discovered two integer overflows in ASF file format decoding,
in the new_demux_packet() function from libmpdemux/demuxer.h and the
demux_asf_read_packet() function from libmpdemux/demux_asf.c.

Impact
======

An attacker could craft a malicious media file which, when opened using
MPlayer, would lead to a heap-based buffer overflow. This could result
in the execution of arbitrary code with the permissions of the user
running MPlayer.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All MPlayer users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-video/mplayer-1.0.20060217"

References
==========

  [ 1 ] CVE-2005-4048
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-4048
  [ 2 ] CVE-2006-0579
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0579
  [ 3 ] GLSA 200601-06
        http://www.gentoo.org/security/en/glsa/glsa-200601-06.xml

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

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

  http://security.gentoo.org/glsa/glsa-200603-03.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 2006 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/2.0
 
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