Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2020-20896

Published: 20 September 2021

An issue was discovered in function latm_write_packet in libavformat/latmenc.c in Ffmpeg 4.2.1, allows attackers to cause a Denial of Service or other unspecified impacts due to a Null pointer dereference.

Notes

AuthorNote
ccdm94
Xenial seems to not be vulnerable to this issue. The commit that introduces
the code addressed in the fix commit (dd01947397b) is 8b3ec51de8a (3.4).
In this commit, the lines that were added in the fix were removed. The
package code in Xenial does not include the changes added by 8b3ec51de8a,
and therefore, code reintroduced by the fix to this CVE is already present.

Priority

Medium

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
ffmpeg
Launchpad, Ubuntu, Debian
impish Not vulnerable
(7:4.3.1-4ubuntu1)
hirsute Not vulnerable
(7:4.3.1-4ubuntu1)
kinetic Not vulnerable
(7:4.3.1-4ubuntu1)
lunar Not vulnerable
(7:4.3.1-4ubuntu1)
jammy Not vulnerable
(7:4.3.1-4ubuntu1)
trusty Does not exist

xenial Not vulnerable
(code not present)
mantic Not vulnerable
(7:4.3.1-4ubuntu1)
bionic Not vulnerable
(7:3.4.11-0ubuntu0.1+esm2)
focal Not vulnerable
(7:4.2.7-0ubuntu0.1)
upstream
Released (4.2.2)
Patches:
upstream: https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/dd01947397b98e94c3f2a79d5820aaf4594f4d3b
qtwebengine-opensource-src
Launchpad, Ubuntu, Debian
kinetic Ignored
(end of life, was needs-triage)
impish Ignored
(end of life)
lunar Ignored
(end of life, was needs-triage)
bionic Needs triage

focal Needs triage

hirsute Ignored
(end of life)
jammy Needs triage

trusty Does not exist

upstream Needs triage

xenial Ignored
(end of standard support)
mantic Needs triage

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

focal Needs triage

hirsute Ignored
(end of life)
jammy Needs triage

trusty Does not exist

upstream Needs triage

xenial 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