A new security update has been released for Gentoo Linux - MPlayer: Multiple integer overflows. Here the announcement:

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