CVE-2020-20902
First published: Mon Sep 20 2021(Updated: )
A CWE-125: Out-of-bounds read vulnerability exists in long_term_filter function in g729postfilter.c in FFmpeg 4.2.1 during computation of the denominator of pseudo-normalized correlation R'(0), that could result in disclosure of information.
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=commitdiff;h=0c61661a2cbe1b8b284c80ada1c2fdddf4992cad
- https://trac.ffmpeg.org/ticket/8176
- https://launchpad.net/bugs/cve/CVE-2020-20902
- http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=0c61661a2cbe1b8b284c80ada1c2fdddf4992cad
- http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=5f0acc5064ed501cb40d4aaccae2b3ce5c4552fd
- http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=2c78a76cb0443f8a12a5eadc3b58373aa2f4ab22
- http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=b97aaf791f6ea3506a6252ecef6a1a0e9a542e04
- http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=81672bf00f3b5a3c025034f4b2e33d67b72f3839
- http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=a0c91fb0f0641f9f35f650281a176657907097cf
- http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=abf9627f70ed8467b1646d56205e61f965f11468
- http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=1cff89a11fa051696109565b3bf88c94479374eb
- https://security-tracker.debian.org/tracker/CVE-2020-20902
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-20902
- https://nvd.nist.gov/vuln/detail/CVE-2020-20902
- https://ubuntu.com/security/CVE-2020-20902
Frequently Asked Questions
What is CVE-2020-20902?
CVE-2020-20902 is a CWE-125: Out-of-bounds read vulnerability in the long_term_filter function in g729postfilter.c in FFmpeg 4.2.1.
What is the severity of CVE-2020-20902?
The severity of CVE-2020-20902 is not specified in the provided information.
How does CVE-2020-20902 work?
CVE-2020-20902 occurs when an out-of-bounds read vulnerability exists in the long_term_filter function in g729postfilter.c, which could result in the disclosure of information.
Which software is affected by CVE-2020-20902?
The affected software includes FFmpeg 4.2.1.
How do I fix CVE-2020-20902?
To fix CVE-2020-20902, update FFmpeg to version 4.2.2.
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