CVE-2019-9718

NameCVE-2019-9718
DescriptionIn FFmpeg 3.2 and 4.1, a denial of service in the subtitle decoder allows attackers to hog the CPU via a crafted video file in Matroska format, because ff_htmlmarkup_to_ass in libavcodec/htmlsubtitles.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)
ReferencesDSA-4449-1
Debian Bugs926666

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ffmpeg (PTS)stretch (security)7:3.2.18-0+deb9u1fixed
stretch (lts), stretch7:3.2.19-0+deb9u4fixed
buster7:4.1.9-0+deb10u1fixed
buster (security)7:4.1.11-0+deb10u1fixed
bullseye7:4.3.6-0+deb11u1fixed
bullseye (security)7:4.3.7-0+deb11u1fixed
bookworm (security), bookworm7:5.1.5-0+deb12u1fixed
trixie7:6.1.1-4fixed
sid7:6.1.1-5fixed
libav (PTS)jessie, jessie (lts)6:11.12-1~deb8u9fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ffmpegsourcestretch7:3.2.14-1~deb9u1DSA-4449-1
ffmpegsource(unstable)7:4.1.3-1low926666
libavsourcewheezy(unfixed)end-of-life
libavsourcejessie(not affected)
libavsource(unstable)(unfixed)

Notes

https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/1f00c97bc3475c477f3c468cf2d924d5761d0982
[jessie] - libav <not-affected> (Vulnerable code not present)

Search for package or bug name: Reporting problems