The Mandriva Security Team published a new security update: MDKSA-2005:231 - Updated ffmpeg packages fix buffer overflow vulnerability for Mandriva Linux. Here the announcement:

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Mandriva Linux Security Advisory MDKSA-2005:231
http://www.mandriva.com/security/
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Package : ffmpeg
Date : December 14, 2005
Affected: 2006.0, Corporate 3.0
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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.

The updated packages have been patched to prevent this problem.
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References:

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

Mandriva Linux 2006.0:
328ece4eb327ae1a8bd469e7cfd67a3e 2006.0/RPMS/ffmpeg-0.4.9-0.pre1.5.1.20060mdk.i586.rpm
56b14628f0c39a90e73efdd707c01abb 2006.0/RPMS/libffmpeg0-0.4.9-0.pre1.5.1.20060mdk.i586.rpm
26e70cd6bcf85d2da24ff21d23e54ec4 2006.0/RPMS/libffmpeg0-devel-0.4.9-0.pre1.5.1.20060mdk.i586.rpm
33c744c5c8b5e97b26d3a871c664f38d 2006.0/SRPMS/ffmpeg-0.4.9-0.pre1.5.1.20060mdk.src.rpm

Mandriva Linux 2006.0/X86_64:
fffaeaf65e153d5c68ba8fc2e63f5a20 x86_64/2006.0/RPMS/ffmpeg-0.4.9-0.pre1.5.1.20060mdk.x86_64.rpm
cfe92867d45206761c2d0442fc94438b x86_64/2006.0/RPMS/lib64ffmpeg0-0.4.9-0.pre1.5.1.20060mdk.x86_64.rpm
69a16bc824805150c1c08660421215bf x86_64/2006.0/RPMS/lib64ffmpeg0-devel-0.4.9-0.pre1.5.1.20060mdk.x86_64.rpm
33c744c5c8b5e97b26d3a871c664f38d x86_64/2006.0/SRPMS/ffmpeg-0.4.9-0.pre1.5.1.20060mdk.src.rpm

Corporate 3.0:
8c9f945457c3c6b6ea27bdc09b551228 corporate/3.0/RPMS/ffmpeg-0.4.8-7.2.C30mdk.i586.rpm
7a18cf6e760524cdc11dcb41674de4c4 corporate/3.0/RPMS/libffmpeg0-0.4.8-7.2.C30mdk.i586.rpm
a28eed315d715bf831fe4e1c4fa755b0 corporate/3.0/RPMS/libffmpeg0-devel-0.4.8-7.2.C30mdk.i586.rpm
c0933f7bdd4c18c2acbc87daaa575dc7 corporate/3.0/SRPMS/ffmpeg-0.4.8-7.2.C30mdk.src.rpm

Corporate 3.0/X86_64:
005b38cf84986bcb47a96eae3312196c x86_64/corporate/3.0/RPMS/ffmpeg-0.4.8-7.2.C30mdk.x86_64.rpm
cd8c5a941ce2a7c8b3b1bd698627391c x86_64/corporate/3.0/RPMS/lib64ffmpeg0-0.4.8-7.2.C30mdk.x86_64.rpm
66c67e4a1bea207ecccd6b7c5336b489 x86_64/corporate/3.0/RPMS/lib64ffmpeg0-devel-0.4.8-7.2.C30mdk.x86_64.rpm
c0933f7bdd4c18c2acbc87daaa575dc7 x86_64/corporate/3.0/SRPMS/ffmpeg-0.4.8-7.2.C30mdk.src.rpm
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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
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Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Mandriva Security Team
<security*mandriva.com>
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