The av_rescale_rnd function in the AVI demuxer in FFmpeg 0.5 allows remote attackers to cause a denial of service (crash) via a crafted AVI file that triggers a divide-by-zero error.
https://roundup.ffmpeg.org/roundup/ffmpeg/issue1245
https://roundup.ffmpeg.org/roundup/ffmpeg/issue1240
http://www.vupen.com/english/advisories/2011/1241
http://www.vupen.com/english/advisories/2010/0935
http://www.ubuntu.com/usn/USN-931-1
http://www.securityfocus.com/bid/36465
http://www.mandriva.com/security/advisories?name=MDVSA-2011:112
http://www.mandriva.com/security/advisories?name=MDVSA-2011:088
http://www.mandriva.com/security/advisories?name=MDVSA-2011:061
http://www.mandriva.com/security/advisories?name=MDVSA-2011:060
http://www.mandriva.com/security/advisories?name=MDVSA-2011:059