CVE-2020-21688

NameCVE-2020-21688
DescriptionA heap-use-after-free in the av_freep function in libavutil/mem.c of FFmpeg 4.2 allows attackers to execute arbitrary code.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3010-1, DSA-4998-1, DSA-5126-1

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

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ffmpegsourcestretch7:3.2.18-0+deb9u1DLA-3010-1
ffmpegsourcebuster7:4.1.9-0+deb10u1DSA-5126-1
ffmpegsourcebullseye7:4.3.3-0+deb11u1DSA-4998-1
ffmpegsource(unstable)7:4.4-5

Notes

https://trac.ffmpeg.org/ticket/8186
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=22c3cd176079dd104ec7610ead697235b04396f1 (4.4)
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=f7c9b1ed56b98eede5756d6865a10305982b4570 (4.1.9)
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=f1a77222da98dbe4b8eeda54d68deefe6adcd299 (3.2.17)

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