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CVE-2021-29980

Published: 11 August 2021

Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.

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
firefox
Launchpad, Ubuntu, Debian
bionic
Released (91.0+build2-0ubuntu0.18.04.1)
focal
Released (91.0+build2-0ubuntu0.20.04.1)
hirsute
Released (91.0+build2-0ubuntu0.21.04.1)
impish
Released (91.0+build2-0ubuntu1)
jammy
Released (91.0+build2-0ubuntu1)
kinetic
Released (91.0+build2-0ubuntu1)
trusty Does not exist

upstream
Released (91)
xenial Needed

mozjs38
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mozjs52
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mozjs68
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mozjs78
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

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

kinetic Needs triage

trusty Does not exist

upstream Needs triage

xenial Does not exist

thunderbird
Launchpad, Ubuntu, Debian
bionic
Released (1:78.13.0+build1-0ubuntu0.18.04.1)
focal
Released (1:78.13.0+build1-0ubuntu0.20.04.2)
hirsute
Released (1:78.13.0+build1-0ubuntu0.21.04.2)
impish
Released (1:78.13.0+build1-0ubuntu2)
jammy
Released (1:78.13.0+build1-0ubuntu2)
kinetic
Released (1:78.13.0+build1-0ubuntu2)
trusty Does not exist

upstream
Released (78.13)
xenial Needed

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