The Mandriva Security Team published a new security update: MDKSA-2005:230 - Updated mplayer packages fix buffer overflow vulnerability for Mandriva Linux. Here the announcement:

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Mandriva Linux Security Advisory MDKSA-2005:230
http://www.mandriva.com/security/
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Package : mplayer
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.

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

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:
0ec3fbc7140878b8852bfe4523bc976f 2006.0/RPMS/libdha1.0-1.0-1.pre7.12.1.20060mdk.i586.rpm
4d06925f029d9cb90de021361ec1eb8a 2006.0/RPMS/libpostproc0-1.0-1.pre7.12.1.20060mdk.i586.rpm
480697743af240b95de26f3ee2ee27bb 2006.0/RPMS/libpostproc0-devel-1.0-1.pre7.12.1.20060mdk.i586.rpm
bd5f41b990b0f44258e22574f7995267 2006.0/RPMS/mencoder-1.0-1.pre7.12.1.20060mdk.i586.rpm
2e03b0379a736eeda906f521f51a8aae 2006.0/RPMS/mplayer-1.0-1.pre7.12.1.20060mdk.i586.rpm
a0b6a9272cb389107871176acd59374d 2006.0/RPMS/mplayer-gui-1.0-1.pre7.12.1.20060mdk.i586.rpm
598d3194b03a2953478058300e9867be 2006.0/SRPMS/mplayer-1.0-1.pre7.12.1.20060mdk.src.rpm

Mandriva Linux 2006.0/X86_64:
5ec60b589f7b913e5da5b410d476df34 x86_64/2006.0/RPMS/lib64postproc0-1.0-1.pre7.12.1.20060mdk.x86_64.rpm
f169744934c966e9d6f063bdaabe61df x86_64/2006.0/RPMS/lib64postproc0-devel-1.0-1.pre7.12.1.20060mdk.x86_64.rpm
e5cd5361fbf279b75adeb038e45f30b3 x86_64/2006.0/RPMS/mencoder-1.0-1.pre7.12.1.20060mdk.x86_64.rpm
d955698040d2ccc2999b847b5f2d675b x86_64/2006.0/RPMS/mplayer-1.0-1.pre7.12.1.20060mdk.x86_64.rpm
1f4bdb33c3e36ee18be2caaef670882d x86_64/2006.0/RPMS/mplayer-gui-1.0-1.pre7.12.1.20060mdk.x86_64.rpm
598d3194b03a2953478058300e9867be x86_64/2006.0/SRPMS/mplayer-1.0-1.pre7.12.1.20060mdk.src.rpm

Corporate 3.0:
573a0671a726dda3e54147a1c9ba29ed corporate/3.0/RPMS/libdha0.1-1.0-0.pre3.14.5.C30mdk.i586.rpm
aa92e33a95a2e1848b9204fdb7d7e802 corporate/3.0/RPMS/libpostproc0-1.0-0.pre3.14.5.C30mdk.i586.rpm
52cbda2a1568908abb2b5dfe6e5df742 corporate/3.0/RPMS/libpostproc0-devel-1.0-0.pre3.14.5.C30mdk.i586.rpm
2d4eef182721451a986db84cd02bb98f corporate/3.0/RPMS/mencoder-1.0-0.pre3.14.5.C30mdk.i586.rpm
74c84c00d4f23cd359b2b86ecd441a35 corporate/3.0/RPMS/mplayer-1.0-0.pre3.14.5.C30mdk.i586.rpm
168340803feefa90fd44204f1a57832e corporate/3.0/RPMS/mplayer-gui-1.0-0.pre3.14.5.C30mdk.i586.rpm
37026a2af62ea105e5191ba63ae7abcc corporate/3.0/SRPMS/mplayer-1.0-0.pre3.14.5.C30mdk.src.rpm

Corporate 3.0/X86_64:
8fbf576d3d232fcdc273ee79d1b8a411 x86_64/corporate/3.0/RPMS/lib64postproc0-1.0-0.pre3.14.5.C30mdk.x86_64.rpm
bfeeb43e38be402db9a15d09017c57fc x86_64/corporate/3.0/RPMS/lib64postproc0-devel-1.0-0.pre3.14.5.C30mdk.x86_64.rpm
b261ec2a243b557b842372a8500e0102 x86_64/corporate/3.0/RPMS/mencoder-1.0-0.pre3.14.5.C30mdk.x86_64.rpm
5ee546e66a0956b4cfcc8f7f76ac5c1b x86_64/corporate/3.0/RPMS/mplayer-1.0-0.pre3.14.5.C30mdk.x86_64.rpm
5d079fccbb6aa538e2e462bf8195ccf1 x86_64/corporate/3.0/RPMS/mplayer-gui-1.0-0.pre3.14.5.C30mdk.x86_64.rpm
37026a2af62ea105e5191ba63ae7abcc x86_64/corporate/3.0/SRPMS/mplayer-1.0-0.pre3.14.5.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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