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CVE-2020-27843

Published: 5 January 2021

A flaw was found in OpenJPEG in versions prior to 2.4.0. This flaw allows an attacker to provide specially crafted input to the conversion or encoding functionality, causing an out-of-bounds read. The highest threat from this vulnerability is system availability.

Notes

AuthorNote
sahnaseredini
the fix is not complete in bionic as the poc is still working.
Also there's a commit in the upstream (07d526e) that is
reverting some optimisations and (apparently) fixes the issue,
however, it does not relate to the CVE, and looks more like a
bug fix.

Priority

Low

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
qtwebengine-opensource-src
Launchpad, Ubuntu, Debian
groovy Ignored
(end of life)
kinetic Ignored
(end of life, was needs-triage)
bionic Needs triage

focal Needs triage

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

lunar Needs triage

trusty Does not exist

upstream Needs triage

xenial Does not exist

texmaker
Launchpad, Ubuntu, Debian
groovy Ignored
(end of life)
bionic Needs triage

focal Needs triage

trusty Does not exist

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

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

lunar Needs triage

upstream Needs triage

blender
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

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

lunar Needs triage

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

trusty Does not exist

upstream Needs triage

ghostscript
Launchpad, Ubuntu, Debian
xenial
Released (9.26~dfsg+0-0ubuntu0.16.04.14)
lunar Not vulnerable
(uses system openjpeg2)
bionic
Released (9.26~dfsg+0-0ubuntu0.18.04.14)
focal Not vulnerable
(uses system openjpeg2)
groovy Not vulnerable
(uses system openjpeg2)
hirsute Not vulnerable
(uses system openjpeg2)
impish Not vulnerable
(uses system openjpeg2)
jammy Not vulnerable
(uses system openjpeg2)
kinetic Not vulnerable
(uses system openjpeg2)
trusty Does not exist

upstream Needs triage

openjpeg2
Launchpad, Ubuntu, Debian
focal
Released (2.3.1-1ubuntu4.20.04.1)
groovy
Released (2.3.1-1ubuntu4.20.10.1)
hirsute
Released (2.3.1-1ubuntu5)
xenial
Released (2.1.2-1.1+deb9u6ubuntu0.1~esm3)
Available with Ubuntu Pro
bionic Needed

impish
Released (2.3.1-1ubuntu5)
jammy
Released (2.3.1-1ubuntu5)
kinetic
Released (2.3.1-1ubuntu5)
lunar
Released (2.3.1-1ubuntu5)
trusty Does not exist

upstream
Released (2.4.0)
Patches:
upstream: https://github.com/uclouvain/openjpeg/commit/38d661a3897052c7ff0b39b30c29cb067e130121
insighttoolkit4
Launchpad, Ubuntu, Debian
kinetic Ignored
(end of life, was needs-triage)
xenial Needs triage

bionic Needs triage

focal Needs triage

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

lunar Needs triage

trusty Does not exist

upstream Needs triage

openjpeg
Launchpad, Ubuntu, Debian
trusty Ignored
(changes too intrusive)
xenial Ignored
(changes too intrusive)
bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

upstream Needs triage

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H