CVE-2017-14171

NameCVE-2017-14171
DescriptionIn libavformat/nsvdec.c in FFmpeg 3.3.3, a DoS in nsv_parse_NSVf_header() due to lack of an EOF (End of File) check might cause huge CPU consumption. When a crafted NSV file, which claims a large "table_entries_used" field in the header but does not contain sufficient backing data, is provided, the loop over 'table_entries_used' would consume huge CPU resources, since there is no EOF check inside the loop.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
NVD severityhigh (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ffmpeg (PTS)stretch7:3.2.5-1vulnerable
stretch (security)7:3.2.7-1~deb9u1vulnerable
buster, sid7:3.3.4-1fixed
libav (PTS)wheezy6:0.8.17-2undetermined
wheezy (security)6:0.8.20-0+deb7u1undetermined
jessie (security), jessie6:11.9-1~deb8u1undetermined

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ffmpegsource(unstable)7:3.3.4-1low
libavsource(unstable)undeterminedhigh

Notes

[stretch] - ffmpeg <postponed> (Can be fixed along when more severe issues are being fixed)
https://github.com/FFmpeg/FFmpeg/commit/c24bcb553650b91e9eff15ef6e54ca73de2453b7

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