The mov_read_dref function in libavformat/mov.c in Libav before 11.7 and FFmpeg before 0.11 allows remote attackers to cause a denial of service (memory corruption) or execute arbitrary code via the entries value in a dref box in an MP4 file. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-3062
