Heap-based buffer overflow in FFmpeg - CVE-2017-7859

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 within the libavcodec/h264dec.c. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger 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-2017-7859

Sources

• http://www.securityfocus.com/bid/97663
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=713