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-2021-4140

Published: 31 December 2021

It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.

Notes

AuthorNote
tyhicks
mozjs contains a copy of the SpiderMonkey JavaScript engine

Priority

Medium

Cvss 3 Severity Score

10.0

Score breakdown

Status

Package Release Status
mozjs52
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

hirsute Does not exist

impish Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

mozjs68
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

hirsute Does not exist

impish Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

mozjs78
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

hirsute Ignored
(end of life)
impish Ignored
(end of life)
trusty Does not exist

upstream Needs triage

xenial Does not exist

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

mantic Does not exist

lunar Ignored
(end of life, was needs-triage)
thunderbird
Launchpad, Ubuntu, Debian
bionic
Released (1:91.5.0+build1-0ubuntu0.18.04.1)
impish
Released (1:91.5.0+build1-0ubuntu0.21.10.1)
trusty Does not exist

upstream
Released (91.5)
hirsute Ignored
(end of life)
focal
Released (1:91.5.0+build1-0ubuntu0.20.04.1)
jammy
Released (1:91.5.0+build1-0ubuntu1)
kinetic
Released (1:91.5.0+build1-0ubuntu1)
lunar
Released (1:91.5.0+build1-0ubuntu1)
xenial Ignored
(end of standard support, was needed)
mantic
Released (1:91.5.0+build1-0ubuntu1)
firefox
Launchpad, Ubuntu, Debian
bionic
Released (96.0+build2-0ubuntu0.18.04.1)
trusty Does not exist

xenial Ignored
(end of standard support, was needed)
upstream
Released (96)
focal
Released (96.0+build2-0ubuntu0.20.04.1)
hirsute
Released (96.0+build2-0ubuntu0.21.04.1)
impish
Released (96.0+build2-0ubuntu0.21.10.1)
jammy
Released (96.0+build2-0ubuntu1)
kinetic
Released (96.0+build2-0ubuntu1)
lunar
Released (96.0+build2-0ubuntu1)
mantic
Released (96.0+build2-0ubuntu1)
mozjs38
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

hirsute Does not exist

impish Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

Severity score breakdown

Parameter Value
Base score 10.0
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Changed
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H