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CVE-2020-21688

Published: 10 August 2021

A heap-use-after-free in the av_freep function in libavutil/mem.c of FFmpeg 4.2 allows attackers to execute arbitrary code.

Priority

Medium

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
ffmpeg
Launchpad, Ubuntu, Debian
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)
bionic
Released (7:3.4.11-0ubuntu0.1)
trusty Does not exist

upstream
Released (4.4)
mantic Not vulnerable
(7:4.4.1-3ubuntu2)
Patches:
upstream: http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=22c3cd176079dd104ec7610ead697235b04396f1
qtwebengine-opensource-src
Launchpad, Ubuntu, Debian
hirsute Ignored
(end of life)
kinetic Ignored
(end of life, was needs-triage)
jammy Needs triage

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

focal Needs triage

trusty Does not exist

upstream Needs triage

xenial Ignored
(end of standard support)
mantic Needs triage

vice
Launchpad, Ubuntu, Debian
hirsute Ignored
(end of life)
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

trusty Does not exist

upstream Needs triage

mantic Needs triage

Severity score breakdown

Parameter Value
Base score 8.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H