Off-by-one error in the VP3 decoder (vp3.c) in FFmpeg 0.5 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted VP3 file that triggers an out-of-bounds read and possibly memory corruption.
https://roundup.ffmpeg.org/roundup/ffmpeg/issue1483
https://roundup.ffmpeg.org/roundup/ffmpeg/issue1240
https://euvd.enisa.europa.eu/vulnerability/EUVD-2009-4596
http://www.securityfocus.com/bid/36465
http://www.debian.org/security/2010/dsa-2000
http://secunia.com/advisories/38643
http://secunia.com/advisories/36805
http://scarybeastsecurity.blogspot.com/2009/09/patching-ffmpeg-into-shape.html