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CVE-2020-21697

Good to know:

Date: August 10, 2021

A heap-use-after-free in the mpeg_mux_write_packet function in libavformat/mpegenc.c of FFmpeg 4.2 allows to cause a denial of service (DOS) via a crafted avi file.

Language: C

Severity Score

4.3

Related Resources (6)

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2020-21697

Url: https://nvd.nist.gov/vuln/detail/CVE-2020-21697

Url: https://trac.ffmpeg.org/ticket/8188

Url: https://security-tracker.debian.org/tracker/CVE-2020-21697

Url: https://www.debian.org/security/2021/dsa-4998

Url: https://www.mend.io/vulnerability-database/CVE-2020-21697

Severity Score

4.3

Weakness Type (CWE)

Use After Free

CWE-416

Top Fix

Upgrade Version

Upgrade to version n4.4

CVSS v3

Base Score:	4.3
Attack Vector (AV):
Attack Complexity (AC):
Privileges Required (PR):
User Interaction (UI):
Scope (S):
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL

CVSS v2

Base Score:	5.5
Access Vector (AV):
Access Complexity (AC):
Authentication (AU):
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH
Additional information:

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