The atrac3_decode_init function in libavcodec/atrac3.c in FFmpeg before 1.0.4 allows remote attackers to have an unspecified impact via ATRAC3 data with the joint stereo coding mode set and fewer than two channels.
http://www.ffmpeg.org/security.html
http://www.debian.org/security/2013/dsa-2793
http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=2502914c5f8eb77659d7c0868396862557a63245
http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=13451f5520ce6b0afde861b2285dda659f8d4fb4