CVE-2020-21697

Published: Aug 10, 2021Modified: Nov 21, 2024

6.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitability: 2.8 / Impact: 3.6

Source: NVD

Description

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.

Affected (2)

Products: Ffmpeg: Ffmpeg · Debian: Debian Linux

1 product

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Ffmpeg Ffmpeg	Version 4.2

Configuration B

1 vulnerable

Vulnerable Software	Affected Versions
Debian Debian Linux	Version 11.0

Related CWEs

CWE-416

Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (4)

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

Source: cve@mitre.org

ExploitIssue TrackingPatchVendor Advisory

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

Source: cve@mitre.org

Third Party Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitIssue TrackingPatchVendor Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

Timeline

No history available yet.