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CVE-2020-6822

Published: 7 April 2020

On 32-bit builds, an out of bounds write could have occurred when processing an image larger than 4 GB in <code>GMPDecodeData</code>. It is possible that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.

Notes

AuthorNote
tyhicks
mozjs contains a copy of the SpiderMonkey JavaScript engine

Priority

Medium

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
mozjs52
Launchpad, Ubuntu, Debian
groovy Ignored
(end of life)
bionic Needs triage

eoan Ignored
(end of life)
focal Needs triage

trusty Does not exist

upstream Needs triage

xenial Does not exist

impish Does not exist

kinetic Does not exist

lunar Does not exist

hirsute Does not exist

jammy Does not exist

mantic Does not exist

mozjs68
Launchpad, Ubuntu, Debian
groovy Ignored
(end of life)
hirsute Does not exist

impish Does not exist

kinetic Does not exist

lunar Does not exist

bionic Does not exist

eoan Does not exist

focal Needs triage

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

mozjs38
Launchpad, Ubuntu, Debian
eoan Does not exist

focal Does not exist

hirsute Does not exist

impish Does not exist

kinetic Does not exist

lunar Does not exist

bionic Needs triage

groovy Does not exist

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

mozjs60
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Ignored
(end of life)
focal Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

hirsute Does not exist

impish Does not exist

kinetic Does not exist

lunar Does not exist

groovy Does not exist

jammy Does not exist

mantic Does not exist

firefox
Launchpad, Ubuntu, Debian
hirsute
Released (75.0+build3-0ubuntu1)
impish
Released (75.0+build3-0ubuntu1)
kinetic
Released (75.0+build3-0ubuntu1)
lunar
Released (75.0+build3-0ubuntu1)
bionic
Released (75.0+build3-0ubuntu0.18.04.1)
eoan
Released (75.0+build3-0ubuntu0.19.10.1)
focal
Released (75.0+build3-0ubuntu1)
groovy
Released (75.0+build3-0ubuntu1)
jammy
Released (75.0+build3-0ubuntu1)
trusty Does not exist

upstream
Released (75.0)
xenial
Released (75.0+build3-0ubuntu0.16.04.1)
mantic
Released (75.0+build3-0ubuntu1)
thunderbird
Launchpad, Ubuntu, Debian
hirsute
Released (1:68.7.0+build1-0ubuntu1)
impish
Released (1:68.7.0+build1-0ubuntu1)
kinetic
Released (1:68.7.0+build1-0ubuntu1)
lunar
Released (1:68.7.0+build1-0ubuntu1)
bionic
Released (1:68.7.0+build1-0ubuntu0.18.04.1)
eoan
Released (1:68.7.0+build1-0ubuntu0.19.10.1)
focal
Released (1:68.7.0+build1-0ubuntu1)
groovy
Released (1:68.7.0+build1-0ubuntu1)
jammy
Released (1:68.7.0+build1-0ubuntu1)
trusty Does not exist

upstream
Released (68.7.0)
xenial
Released (1:68.7.0+build1-0ubuntu0.16.04.2)
mantic
Released (1:68.7.0+build1-0ubuntu1)

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