Heap-based buffer overflow in the vqa_decode_chunk function in the VQA codec (vqavideo.c) in libavcodec in Libav 0.5.x before 0.5.9, 0.6.x before 0.6.6, 0.7.x before 0.7.6, and 0.8.x before 0.8.2 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted VQA media file in which the image size is not a multiple of the block size.
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://bugs.launchpad.net/ubuntu/+source/libav/+bug/980963 | exploit |
| http://www.ubuntu.com/usn/USN-1479-1 | vendor advisory |
| http://git.libav.org/?p=libav.git%3Ba=commit%3Bh=58b2e0f0f2fc96c1158e04f8aba95cbe6157a1a3 | |
| http://secunia.com/advisories/49089 | third party advisory |
| http://www.debian.org/security/2012/dsa-2471 | vendor advisory |
| http://libav.org/ | |
| http://www.securityfocus.com/bid/53389 | vdb entry |
| http://www.openwall.com/lists/oss-security/2012/05/03/4 | mailing list |