CVE-2020-20448

NameCVE-2020-20448
DescriptionFFmpeg 4.1.3 is affected by a Divide By Zero issue via libavcodec/ratecontrol.c, which allows a remote malicious user to cause a Denial of Service.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDSA-4722-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ffmpeg (PTS)buster7:4.1.8-0+deb10u1fixed
buster (security)7:4.1.9-0+deb10u1fixed
bullseye7:4.3.3-0+deb11u1fixed
bullseye (security)7:4.3.4-0+deb11u1fixed
bookworm, sid7:5.0.1-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ffmpegsourcestretch(not affected)
ffmpegsourcebuster7:4.1.6-1~deb10u1DSA-4722-1
ffmpegsource(unstable)7:4.3-2unimportant

Notes

[stretch] - ffmpeg <not-affected> (vulnerable code is not present)
https://trac.ffmpeg.org/ticket/7990
Negligible security impact
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=8802e329c8317ca5ceb929df48a23eb0f9e852b2
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=55279d699fa64d8eb1185d8db04ab4ed92e8dea2

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