From: Stefan Cornelius <dercorny@gentoo.org.>
To: gentoo-announce@lists.gentoo.org
Subject: [ GLSA 200602-01 ] GStreamer FFmpeg plugin: Heap-based buffer overflow
Date: Sun, 5 Feb 2006 19:17:51 +0100
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Gentoo Linux Security Advisory GLSA 200602-01
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http://security.gentoo.org/
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Severity: Normal
Title: GStreamer FFmpeg plugin: Heap-based buffer overflow
Date: February 05, 2006
Bugs: #119512
ID: 200602-01
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Synopsis
========
The GStreamer FFmpeg plugin is vulnerable to a buffer overflow that may
be exploited by attackers to execute arbitrary code.
Background
==========
The GStreamer FFmpeg plugin uses code from the FFmpeg library to
provide fast colorspace conversion and multimedia decoders to the
GStreamer open source media framework.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-plugins/gst-plugins-ffmpeg < 0.8.7-r1 >= 0.8.7-r1
Description
===========
The GStreamer FFmpeg plugin contains derived code from 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).
Impact
======
A remote attacker could entice a user to run an application using the
GStreamer FFmpeg plugin on a maliciously crafted PIX_FMT_PAL8 format
image file (like PNG images), possibly leading to the execution of
arbitrary code with the permissions of the user running the
application.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All GStreamer FFmpeg plugin users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-plugins/gst-plugins-ffmpeg-0.8.7-r1"
References
==========
[ 1 ] CVE-2005-4048
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-4048
[ 2 ] 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-200602-01.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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