CVE-2016-9821

NameCVE-2016-9821
DescriptionInteger overflow in libavcodec/mpegvideo_parser.c in libav 11.8 allows remote attackers to cause a denial of service (crash) via a crafted file.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-791-1, DSA-3833-1
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libav (PTS)wheezy6:0.8.17-2vulnerable
wheezy (security)6:0.8.20-0+deb7u1fixed
jessie (security), jessie6:11.9-1~deb8u1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libavsource(unstable)(unfixed)medium
libavsourcejessie6:11.9-1~deb8u1mediumDSA-3833-1
libavsourcewheezy6:0.8.20-0+deb7u1mediumDLA-791-1

Notes

https://blogs.gentoo.org/ago/2016/12/01/libav-multiple-crashes-from-the-undefined-behavior-sanitizer
https://github.com/asarubbo/poc/blob/master/00037-libav-signedintoverflow-mpegvideo_parser
https://bugzilla.libav.org/show_bug.cgi?id=981
https://git.libav.org/?p=libav.git;a=commit;h=9f0193c778175cea3fb43f17acf9b90b4d862d33 (pre 11.9)
https://git.libav.org/?p=libav.git;a=commit;h=15e1af0006354d6bbf0e433c5d1e8ef13c93d6d0 (pre 11.9)

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