CVE-2017-14170

NameCVE-2017-14170
DescriptionIn libavformat/mxfdec.c in FFmpeg 3.3.3, a DoS in mxf_read_index_entry_array() due to lack of an EOF (End of File) check might cause huge CPU consumption. When a crafted MXF file, which claims a large "nb_index_entries" field in the header but does not contain sufficient backing data, is provided, the loop would consume huge CPU resources, since there is no EOF check inside the loop. Moreover, this big loop can be invoked multiple times if there is more than one applicable data segment in the crafted MXF file.
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/900f39692ca0337a98a7cf047e4e2611071810c2

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