The read_header function in libavcodec/ffv1dec.c in FFmpeg before 2.1 does not prevent changes to global parameters, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted FFV1 data.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://github.com/FFmpeg/FFmpeg/commit/547d690d676064069d44703a1917e0dab7e33445 | patch exploit |
| https://trac.ffmpeg.org/ticket/2906 | exploit |
| https://security.gentoo.org/glsa/201603-06 | vendor advisory |
| http://ffmpeg.org/security.html | |
| http://openwall.com/lists/oss-security/2013/12/08/3 | mailing list patch |
| http://openwall.com/lists/oss-security/2013/11/26/7 | mailing list patch |