CVE-2020-20892: Divide by Zero
First published: Mon Sep 20 2021(Updated: )
An issue was discovered in function filter_frame in libavfilter/vf_lenscorrection.c in Ffmpeg 4.2.1, allows attackers to cause a Denial of Service or other unspecified impacts due to a division by zero.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FFmpeg FFmpeg | =4.2.1 | |
| 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 |
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Reference Links
- http://git.videolan.org/?p=ffmpeg.git;a=commit;h=19587c9332f5be4f6bc6d7b2b8ef3fd21dfeaa01
- https://trac.ffmpeg.org/ticket/8265
- https://launchpad.net/bugs/cve/CVE-2020-20892
- http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=19587c9332f5be4f6bc6d7b2b8ef3fd21dfeaa01
- http://git.videolan.org/?p=ffmpeg.git;a=commit;h=439645004bb672a29145621549cb87acdb2f84db
- http://git.videolan.org/?p=ffmpeg.git;a=commit;h=94e502e96b0870177e0af4c1e8718ac71475e374
- https://security-tracker.debian.org/tracker/CVE-2020-20892
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-20892
- https://nvd.nist.gov/vuln/detail/CVE-2020-20892
- https://ubuntu.com/security/CVE-2020-20892
Frequently Asked Questions
What is CVE-2020-20892?
CVE-2020-20892 is a vulnerability discovered in Ffmpeg 4.2.1 that allows attackers to cause a Denial of Service or other unspecified impacts due to a division by zero.
How can CVE-2020-20892 impact my system?
CVE-2020-20892 can cause a Denial of Service or other unspecified impacts on systems running Ffmpeg 4.2.1.
What versions of Ffmpeg are affected by CVE-2020-20892?
Ffmpeg versions up to and excluding 4.3 are affected by CVE-2020-20892.
How can I fix CVE-2020-20892?
To fix CVE-2020-20892, upgrade to Ffmpeg version 4.3 or later.
Where can I find more information about CVE-2020-20892?
More information about CVE-2020-20892 can be found at the following references: [Reference 1](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-20892), [Reference 2](http://git.videolan.org/?p=ffmpeg.git;a=commit;h=19587c9332f5be4f6bc6d7b2b8ef3fd21dfeaa01), [Reference 3](https://trac.ffmpeg.org/ticket/8265).
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