A new security update has been released for Gentoo Linux - FFmpeg: Multiple vulnerabilities. Here the announcement:

Gentoo Linux Security Advisory GLSA 200903-33
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http://security.gentoo.org/
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Severity: Normal
Title: FFmpeg: Multiple vulnerabilities
Date: March 19, 2009
Bugs: #231831, #231834, #245313, #257217, #257381
ID: 200903-33

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Synopsis
========

Multiple vulnerabilities in FFmpeg may lead to the remote execution of
arbitrary code or a Denial of Service.

Background
==========

FFmpeg is a complete solution to record, convert and stream audio and
video. gst-plugins-ffmpeg is a FFmpeg based gstreamer plugin which
includes a vulnerable copy of FFmpeg code. Mplayer is a multimedia
player which also includes a vulnerable copy of the code.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 ffmpeg < 0.4.9_p20090201 >= 0.4.9_p20090201
2 gst-plugins-ffmpeg < 0.10.5 >= 0.10.5
3 mplayer < 1.0_rc2_p28450 >= 1.0_rc2_p28450
-------------------------------------------------------------------
3 affected packages on all of their supported architectures.
-------------------------------------------------------------------

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

Multiple vulnerabilities were found in FFmpeg:

* astrange reported a stack-based buffer overflow in the
str_read_packet() in libavformat/psxstr.c when processing .str files
(CVE-2008-3162).

* Multiple buffer overflows in libavformat/utils.c (CVE-2008-4866).

* A buffer overflow in libavcodec/dca.c (CVE-2008-4867).

* An unspecified vulnerability in the avcodec_close() function in
libavcodec/utils.c (CVE-2008-4868).

* Unspecified memory leaks (CVE-2008-4869).

* Tobias Klein repoerted a NULL pointer dereference due to an integer
signedness error in the fourxm_read_header() function in
libavformat/4xm.c (CVE-2009-0385).

Impact
======

A remote attacker could entice a user to open a specially crafted media
file, possibly leading to 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 FFmpeg users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose >=media-video/ffmpeg-0.4.9_p20090201=
"

All gst-plugins-ffmpeg users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
>=media-plugins/gst-plugins-ffmpeg-0.10.5"

All Mplayer users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose >=media-video/mplayer-1.0_rc2_p28450=
"

References
==========

[ 1 ] CVE-2008-3162
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3162
[ 2 ] CVE-2008-4866
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4866
[ 3 ] CVE-2008-4867
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4867
[ 4 ] CVE-2008-4868
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4868
[ 5 ] CVE-2008-4869
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4869
[ 6 ] CVE-2009-0385
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0385

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

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

http://security.gentoo.org/glsa/glsa-200903-33.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 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