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CVE-2020-22020

Good to know:

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Date: May 26, 2021

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.

Language: C

Severity Score

Related Resources (9)

http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=ce5274c1385d55892a692998923802023526b765
https://security-tracker.debian.org/tracker/CVE-2020-22020
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=ce5274c1385d55892a692998923802023526b765
https://lists.debian.org/debian-lts-announce/2021/08/msg00018.html
https://www.debian.org/security/2021/dsa-4990
https://nvd.nist.gov/vuln/detail/CVE-2020-22020
https://trac.ffmpeg.org/ticket/8239
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-22020
https://www.mend.io/vulnerability-database/CVE-2020-22020

Severity Score

Weakness Type (CWE)

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CWE-120

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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