Debian: DSA-2471-1 Critical: FFmpeg Remote Code Execution Risks

Several vulnerabilities have been discovered in FFmpeg, a multimedia
player, server and encoder. Multiple input validations in the decoders/
demuxers for Westwood Studios VQA, Apple MJPEG-B, Theora, Matroska,
Vorbis, Sony ATRAC3, DV, NSV, files could lead to the execution of
arbitrary code.

These issues were discovered by Aki Helin, Mateusz Jurczyk, Gynvael
Coldwind, and Michael Niedermayer.

For the stable distribution (squeeze), this problem has been fixed in
version 4:0.5.8-1.

For the unstable distribution (sid), this problem has been fixed in
version 6:0.8.2-1 of libav.

We recommend that you upgrade your ffmpeg packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/