CVE-2019-9718

In 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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
mitreCNA
---
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 82%
VendorProductVersion
ffmpegffmpeg
3.2
ffmpegffmpeg
4.1
debiandebian_linux
9.0
canonicalubuntu_linux
18.04
canonicalubuntu_linux
18.10
canonicalubuntu_linux
19.04
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
ffmpeg
bullseye
7:4.3.7-0+deb11u1
fixed
jessie
not-affected
bullseye (security)
7:4.3.8-0+deb11u1
fixed
bookworm
7:5.1.6-0+deb12u1
fixed
bookworm (security)
7:5.1.6-0+deb12u1
fixed
sid
7:7.1-3
fixed
trixie
7:7.1-3
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
ffmpeg
disco
Fixed 7:4.1.3-0ubuntu1
released
cosmic
Fixed 7:4.0.4-0ubuntu1
released
bionic
Fixed 7:3.4.6-0ubuntu0.18.04.1
released
xenial
not-affected
trusty
dne
Common Weakness Enumeration
References
http://www.securityfocus.com/bid/107382
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/1f00c97bc3475c477f3c468cf2d924d5761d0982
https://github.com/FFmpeg/FFmpeg/commit/23ccf3cabb4baf6e8af4b1af3fcc59c904736f21
https://seclists.org/bugtraq/2019/May/60
https://usn.ubuntu.com/3967-1/
https://www.debian.org/security/2019/dsa-4449
http://www.securityfocus.com/bid/107382
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/1f00c97bc3475c477f3c468cf2d924d5761d0982
https://github.com/FFmpeg/FFmpeg/commit/23ccf3cabb4baf6e8af4b1af3fcc59c904736f21
https://seclists.org/bugtraq/2019/May/60
https://usn.ubuntu.com/3967-1/
https://www.debian.org/security/2019/dsa-4449