CVE-2017-16803

NameCVE-2017-16803
DescriptionIn Libav through 11.11 and 12.x through 12.1, the smacker_decode_tree function in libavcodec/smacker.c does not properly restrict tree recursion, which allows remote attackers to cause a denial of service (bitstream.c:build_table() out-of-bounds read and application crash) via a crafted Smacker stream.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDSA-4119-1
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ffmpeg (PTS)stretch (security), stretch7:3.2.10-1~deb9u1fixed
buster, sid7:3.4.2-2fixed
libav (PTS)jessie (security), jessie6:11.12-1~deb8u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ffmpegsource(unstable)7:2.2.1-1medium
libavsource(unstable)(unfixed)low
libavsourcejessie6:11.12-1~deb8u1mediumDSA-4119-1

Notes

https://bugzilla.libav.org/show_bug.cgi?id=1098
https://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2f
ffmpeg: https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2f
ffmpeg originally fixed by: https://git.ffmpeg.org/gitweb/ffmpeg.git/commitdiff/b829da363985cb2f80130bba304cc29a632f6446

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