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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
bionic
Released (7:3.4.11-0ubuntu0.1)
focal
Released (7:4.2.7-0ubuntu0.1)
hirsute Ignored
(end of life)
impish Not vulnerable
(7:4.4-6ubuntu5)
jammy Not vulnerable
(7:4.4.1-3ubuntu2)
kinetic Not vulnerable
(7:4.4.1-3ubuntu2)
lunar Not vulnerable
(7:4.4.1-3ubuntu2)
mantic Not vulnerable
(7:4.4.1-3ubuntu2)
trusty Does not exist

upstream
Released (4.4)
xenial
Released (7:2.8.17-0ubuntu0.1+esm2)
Available with Ubuntu Pro
Patches:
upstream: http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=22c3cd176079dd104ec7610ead697235b04396f1
qtwebengine-opensource-src
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

hirsute Ignored
(end of life)
impish Ignored
(end of life)
jammy Needs triage

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

trusty Does not exist

upstream Needs triage

xenial Ignored
(end of standard support)
vice
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

hirsute Ignored
(end of life)
impish Ignored
(end of life)
jammy Needs triage

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

trusty Does not exist

upstream Needs triage

xenial 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