Heap-based buffer overflow in FFmpeg - CVE-2016-6920

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Heap-based buffer overflow in the decode_block function in libavcodec/exr.c in FFmpeg before 3.1.3. A remote attacker can use vectors involving tile positions. to trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

How to mitigate CVE-2016-6920

Sources

• http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=79f52a0dbd484aad111e4bf4a4f7047c7ceb6137
• http://packetstormsecurity.com/files/138618/ffmpeg-3.1.2-Heap-Overflow.html
• http://www.securityfocus.com/archive/1/539368/100/0/threaded
• http://www.securityfocus.com/bid/92664
• http://www.securityfocus.com/bid/92790
• https://www.ffmpeg.org/security.html