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CVE-2020-21697

Published: 10 August 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.

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
ffmpeg
Launchpad, Ubuntu, Debian
trusty Does not exist

bionic
Released (7:3.4.11-0ubuntu0.1)
impish Not vulnerable
(7:4.4-6ubuntu5)
hirsute Ignored
(end of life)
focal
Released (7:4.2.7-0ubuntu0.1)
jammy Not vulnerable
(7:4.4.1-3ubuntu2)
kinetic Not vulnerable
(7:4.4.1-3ubuntu2)
xenial
Released (7:2.8.17-0ubuntu0.1+esm2)
Available with Ubuntu Pro
lunar Not vulnerable
(7:4.4.1-3ubuntu2)
upstream
Released (4.4)
mantic Not vulnerable
(7:4.4.1-3ubuntu2)
Patches:
upstream: http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=cfce16449cb815132f829d5a07beb138dfb2cba6
qtwebengine-opensource-src
Launchpad, Ubuntu, Debian
kinetic Ignored
(end of life, was needs-triage)
jammy Needs triage

impish Ignored
(end of life)
bionic Needs triage

focal Needs triage

hirsute Ignored
(end of life)
trusty Does not exist

upstream Needs triage

xenial Ignored
(end of standard support)
mantic Needs triage

lunar Ignored
(end of life, was needs-triage)
vice
Launchpad, Ubuntu, Debian
kinetic Ignored
(end of life, was needs-triage)
jammy Needs triage

impish Ignored
(end of life)
xenial Needs triage

lunar Ignored
(end of life, was needs-triage)
bionic Needs triage

focal Needs triage

hirsute Ignored
(end of life)
trusty Does not exist

upstream Needs triage

mantic Needs triage

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H