| Name | CVE-2020-20450 |
| Description | FFmpeg 4.2 is affected by null pointer dereference passed as argument to libavformat/aviobuf.c, which could cause a Denial of Service. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-4998-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| ffmpeg (PTS) | stretch (security) | 7:3.2.18-0+deb9u1 | fixed |
| stretch (lts), stretch | 7:3.2.19-0+deb9u5 | fixed |
| buster, buster (lts) | 7:4.1.11-0+deb10u2 | vulnerable |
| buster (security) | 7:4.1.11-0+deb10u1 | vulnerable |
| bullseye | 7:4.3.7-0+deb11u1 | fixed |
| bullseye (security) | 7:4.3.8-0+deb11u1 | fixed |
| bookworm (security), bookworm | 7:5.1.6-0+deb12u1 | fixed |
| sid, trixie | 7:7.1-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| ffmpeg | source | experimental | 7:4.4-1 | | | |
| ffmpeg | source | stretch | (not affected) | | | |
| ffmpeg | source | bullseye | 7:4.3.3-0+deb11u1 | | DSA-4998-1 | |
| ffmpeg | source | (unstable) | 7:4.4-5 | unimportant | | |
Notes
[stretch] - ffmpeg <not-affected> (vulnerable code is not present)
https://trac.ffmpeg.org/ticket/7993
https://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=5400e4a50c61e53e1bc50b3e77201649bbe9c510
https://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=3865b1952e5cf993b016d83ba78fe1deb63bbfad (4.3)
Negligible security impact