CVE-2011-3947

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-08-20 · updated 2026-06-16
Weakness: CWE-119

Description

Buffer overflow in mjpegbdec.c in libavcodec in FFmpeg 0.7.x before 0.7.12 and 0.8.x before 0.8.11, and in Libav 0.5.x before 0.5.9, 0.6.x before 0.6.6, 0.7.x before 0.7.5, and 0.8.x before 0.8.1, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted MJPEG-B file.

Affected products

FFmpeg: 0.7.1, 0.7.2, 0.7.6, 0.7.7, 0.7.8, 0.7.9 (+6)
libav: 0.5, 0.5.1, 0.5.2, 0.5.3, 0.5.4, 0.5.5 (+15)

References

http://ffmpeg.org/
http://git.libav.org/?p=libav.git%3Ba=commit%3Bh=b57d262412204e54a7ef8fa1b23ff4dcede622e5
http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=b57d262412204e54a7ef8fa1b23ff4dcede622e5
http://libav.org/
http://secunia.com/advisories/49089
http://www.debian.org/security/2012/dsa-2471
http://www.ubuntu.com/usn/USN-1479-1
http://ffmpeg.org/
http://git.libav.org/?p=libav.git%3Ba=commit%3Bh=b57d262412204e54a7ef8fa1b23ff4dcede622e5
http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=b57d262412204e54a7ef8fa1b23ff4dcede622e5
http://libav.org/
http://secunia.com/advisories/49089

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