| Name | CVE-2020-20896 |
| Description | An issue was discovered in function latm_write_packet in libavformat/latmenc.c in Ffmpeg 4.2.1, allows attackers to cause a Denial of Service or other unspecified impacts due to a Null pointer dereference. |
| 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-5126-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| ffmpeg (PTS) | bullseye | 7:4.3.7-0+deb11u1 | fixed |
| bullseye (security) | 7:4.3.8-0+deb11u1 | fixed |
| bookworm, bookworm (security) | 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 | stretch | (not affected) | | | |
| ffmpeg | source | buster | 7:4.1.9-0+deb10u1 | | DSA-5126-1 | |
| ffmpeg | source | (unstable) | 7:4.3-2 | | | |
Notes
[stretch] - ffmpeg <not-affected> (Vulnerable code introduced later)
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/dd01947397b98e94c3f2a79d5820aaf4594f4d3b (4.3)
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/6fe33489be72eee8010c28165f4b12870df4c600 (4.1.9)
https://trac.ffmpeg.org/ticket/8273
Introduced in: https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/8b3ec51de8a04f4442297f2f835e925cab7b0597 (3.4)