| Name | CVE-2020-20448 |
| Description | FFmpeg 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. |
| 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-4722-1 |
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+deb9u3 | fixed |
| buster | 7:4.1.9-0+deb10u1 | fixed |
| buster (security) | 7:4.1.11-0+deb10u1 | fixed |
| bullseye (security), bullseye | 7:4.3.6-0+deb11u1 | fixed |
| bookworm (security), bookworm | 7:5.1.4-0+deb12u1 | fixed |
| trixie | 7:6.1.1-1 | fixed |
| sid | 7:6.1.1-3 | 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 | 7:4.1.6-1~deb10u1 | | DSA-4722-1 | |
| ffmpeg | source | (unstable) | 7:4.3-2 | unimportant | | |
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