CVE-2009-4634 Information

Description

Multiple integer underflows in FFmpeg 0.5 allow remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted file that (1) bypasses a validation check in vorbis_dec.c and triggers a wraparound of the stack pointer or (2) access a pointer from out-of-bounds memory in mov.c related to an elst tag that appears before a tag that creates a stream.

Reference

http://scarybeastsecurity.blogspot.com/2009/09/patching-ffmpeg-into-shape.html http://secunia.com/advisories/36805 http://secunia.com/advisories/38643 http://secunia.com/advisories/39482 http://www.debian.org/security/2010/dsa-2000 http://www.mandriva.com/security/advisories?name=MDVSA-2011:059 http://www.mandriva.com/security/advisories?name=MDVSA-2011:060 http://www.mandriva.com/security/advisories?name=MDVSA-2011:061 http://www.mandriva.com/security/advisories?name=MDVSA-2011:088 http://www.mandriva.com/security/advisories?name=MDVSA-2011:112 http://www.mandriva.com/security/advisories?name=MDVSA-2011:114 http://www.securityfocus.com/bid/36465 http://www.ubuntu.com/usn/USN-931-1 http://www.vupen.com/english/advisories/2010/0935 http://www.vupen.com/english/advisories/2011/1241 https://roundup.ffmpeg.org/roundup/ffmpeg/issue1240