CVE-2020-22021: Buffer Overflow
First published: Wed May 26 2021(Updated: )
Buffer Overflow vulnerability in FFmpeg 4.2 at filter_edges function in libavfilter/vf_yadif.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 |
Remedy
https://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=7971f62120a55c141ec437aa3f0bacc1c1a3526b
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Reference Links
- https://trac.ffmpeg.org/ticket/8240
- 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-2020-22021
- https://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=7971f62120a55c141ec437aa3f0bacc1c1a3526b
- https://security-tracker.debian.org/tracker/CVE-2020-22021
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22021
- https://nvd.nist.gov/vuln/detail/CVE-2020-22021
- https://ubuntu.com/security/CVE-2020-22021
Frequently Asked Questions
What is CVE-2020-22021?
CVE-2020-22021 is a buffer overflow vulnerability in FFmpeg 4.2 at the filter_edges function in libavfilter/vf_yadif.c.
How does CVE-2020-22021 affect the software?
CVE-2020-22021 could allow a remote malicious user to cause a Denial of Service.
Which versions of FFmpeg are affected by CVE-2020-22021?
Versions 7:3.4.11-0ubuntu0.1, 7:4.2.7-0ubuntu0.1, 7:4.4.2-0ubuntu0.21.10.1, 4.4.1, and 7:2.8.17-0ubuntu0.1+ of FFmpeg are affected by CVE-2020-22021.
How can I fix CVE-2020-22021?
To fix CVE-2020-22021, update FFmpeg to version 7:4.4.1 or later.
Where can I find more information about CVE-2020-22021?
You can find more information about CVE-2020-22021 at the following references: [CVE-2020-22021](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22021), [FFmpeg Ticket](https://trac.ffmpeg.org/ticket/8240), [Ubuntu Security Notice](https://ubuntu.com/security/notices/USN-5472-1).
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