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Sicherheit: Pufferüberlauf in gstreamer-ffmpeg
Aktuelle Meldungen Distributionen
Name: Pufferüberlauf in gstreamer-ffmpeg
ID: MDKSA-2005:232
Distribution: Mandriva
Plattformen: Mandriva 2006.0
Datum: Do, 15. Dezember 2005, 01:57
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-4048
Applikationen: GStreamer FFmpeg Plug-in

Originalnachricht

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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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_______________________________________________________
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_______________________________________________________

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