CVE-2019-9717

NameCVE-2019-9717
DescriptionIn Libav 12.3, a denial of service in the subtitle decoder allows attackers to hog the CPU via a crafted video file in Matroska format, because srt_to_ass in libavcodec/srtdec.c has a complex format argument to sscanf.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libav (PTS)jessie, jessie (lts)6:11.12-1~deb8u9vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libavsourcewheezy(unfixed)end-of-life
libavsource(unstable)(unfixed)unimportant

Notes

Non-trivial sscanf format is not an actual DoS
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