full-disclosure - MDKSA-2005:232 - Updated gstreamer-ffmpeg packages fix buffer overflow vulnerability

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Message-ID: <E1Emgwa-0004Kg-Sq@mercury.mandriva.com>
Date: Thu Dec 15 00:26:07 2005
From: security at mandriva.com (Mandriva Security Team)
Subject: MDKSA-2005:232 - Updated gstreamer-ffmpeg
	packages fix buffer overflow vulnerability

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 _______________________________________________________________________

 Mandriva Linux Security Advisory                         MDKSA-2005:232
 http://www.mandriva.com/security/
 _______________________________________________________________________

 Package : gstreamer-ffmpeg
 Date    : December 14, 2005
 Affected: 2006.0
 _______________________________________________________________________

 Problem Description:

 Simon Kilvington discovered a vulnerability in FFmpeg libavcodec, 
 which can be exploited by malicious people to cause a DoS (Denial 
 of Service) and potentially to compromise a user's system.

 The vulnerability is caused due to a boundary error in the 
 "avcodec_default_get_buffer()" function of "utils.c" in libavcodec. 
 This can be exploited to cause a heap-based buffer overflow when a 
 specially-crafted 1x1 ".png" file containing a palette is read.

 Gstreamer-ffmpeg is built with a private copy of ffmpeg containing
 this same code.

 The updated packages have been patched to prevent this problem.
 _______________________________________________________________________

 References:

 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-4048
 _______________________________________________________________________

 Updated Packages:

 Mandriva Linux 2006.0:
 1e7f7ad8be3efcc5152901d1de9050c7  2006.0/RPMS/gstreamer-ffmpeg-0.8.6-1.1.20060mdk.i586.rpm
 2923eb22aafa7aedd073516e47a7d94f  2006.0/SRPMS/gstreamer-ffmpeg-0.8.6-1.1.20060mdk.src.rpm

 Mandriva Linux 2006.0/X86_64:
 617b165113eb1af7e805d7c2423a771b  x86_64/2006.0/RPMS/gstreamer-ffmpeg-0.8.6-1.1.20060mdk.x86_64.rpm
 2923eb22aafa7aedd073516e47a7d94f  x86_64/2006.0/SRPMS/gstreamer-ffmpeg-0.8.6-1.1.20060mdk.src.rpm
 _______________________________________________________________________

 To upgrade automatically use MandrivaUpdate or urpmi.  The verification
 of md5 checksums and GPG signatures is performed automatically for you.

 All packages are signed by Mandriva for security.  You can obtain the
 GPG public key of the Mandriva Security Team by executing:

  gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

 You can view other update advisories for Mandriva Linux at:

  http://www.mandriva.com/security/advisories

 If you want to report vulnerabilities, please contact

  security_(at)_mandriva.com
 _______________________________________________________________________

 Type Bits/KeyID     Date       User ID
 pub  1024D/22458A98 2000-07-10 Mandriva Security Team
  <security*mandriva.com>
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