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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 




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