CVE-2020-20446: Divide by Zero
First published: Tue May 25 2021(Updated: )
FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious user to 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 | |
| Debian GNU/Linux | =11.0 |
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Reference Links
- https://trac.ffmpeg.org/ticket/7995
- https://www.debian.org/security/2021/dsa-4990
- https://www.debian.org/security/2021/dsa-4998
- https://lists.debian.org/debian-lts-announce/2021/11/msg00012.html
- https://launchpad.net/bugs/cve/CVE-2020-20446
- https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/223b5e8ac9f6461bb13ed365419ec485c5b2b002
- https://security-tracker.debian.org/tracker/CVE-2020-20446
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-20446
- https://nvd.nist.gov/vuln/detail/CVE-2020-20446
- https://ubuntu.com/security/CVE-2020-20446
Frequently Asked Questions
What is CVE-2020-20446?
CVE-2020-20446 is a vulnerability in FFmpeg 4.2 that allows a remote malicious user to cause a Denial of Service.
How does CVE-2020-20446 affect FFmpeg?
CVE-2020-20446 affects FFmpeg 4.2 via the libavcodec/aacpsy.c file.
Which versions of FFmpeg are affected by CVE-2020-20446?
FFmpeg versions 4.2, 4.4.2-0ubuntu0.21.10.1, 3.4.11-0ubuntu0.1, and 4.2.7-0ubuntu0.1 are affected.
How can the vulnerability in FFmpeg be fixed?
To fix the vulnerability in FFmpeg, update to version 7:4.4.2-0ubuntu0.21.10.1, 7:3.4.11-0ubuntu0.1, or 7:4.2.7-0ubuntu0.1.
Where can I find more information about CVE-2020-20446?
You can find more information about CVE-2020-20446 on the CVE Mitre website, the FFmpeg ticket #7995, and the Ubuntu Security Notice USN-5472-1.
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