CVE-2020-22020: Buffer Overflow
First published: Wed May 26 2021(Updated: )
Buffer Overflow vulnerability in FFmpeg 4.2 in the build_diff_map function in libavfilter/vf_fieldmatch.c, which could let a remote malicious user cause a Denial of Service.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/ffmpeg | 7:4.3.7-0+deb11u1 7:4.3.8-0+deb11u1 7:5.1.6-0+deb12u1 7:7.0.2-3 7:7.1-3 | |
| FFmpeg | =4.2 | |
| Debian GNU/Linux | =9.0 | |
| Debian GNU/Linux | =10.0 |
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Reference Links
- http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=ce5274c1385d55892a692998923802023526b765
- https://trac.ffmpeg.org/ticket/8239
- https://lists.debian.org/debian-lts-announce/2021/08/msg00018.html
- https://www.debian.org/security/2021/dsa-4990
- https://launchpad.net/bugs/cve/CVE-2020-22020
- http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=ce5274c1385d55892a692998923802023526b765
- https://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=ce5274c1385d55892a692998923802023526b765
- https://security-tracker.debian.org/tracker/CVE-2020-22020
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22020
- https://nvd.nist.gov/vuln/detail/CVE-2020-22020
- https://ubuntu.com/security/CVE-2020-22020
Frequently Asked Questions
What is CVE-2020-22020?
CVE-2020-22020 is a buffer overflow vulnerability in FFmpeg 4.2.
How can a remote malicious user exploit CVE-2020-22020?
A remote malicious user can exploit CVE-2020-22020 to cause a Denial of Service.
Which versions of FFmpeg are affected by CVE-2020-22020?
FFmpeg versions 3.4.11 to 4.2.7 are affected by CVE-2020-22020.
How can I fix CVE-2020-22020 in Ubuntu?
To fix CVE-2020-22020 in Ubuntu, update FFmpeg to version 3.4.11-0ubuntu0.1 (for Bionic) or 4.2.7-0ubuntu0.1 (for Focal), depending on your distribution.
How can I fix CVE-2020-22020 in Debian?
To fix CVE-2020-22020 in Debian, update FFmpeg to version 7:4.1.9-0+deb10u1, 7:4.1.11-0+deb10u1, 7:4.3.6-0+deb11u1, 7:5.1.3-1, or 7:6.0-7, depending on your distribution.
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