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CVE-2021-24000

Published: 19 April 2021

A race condition with requestPointerLock() and setTimeout() could have resulted in a user interacting with one tab when they believed they were on a separate tab. In conjunction with certain elements (such as &lt;input type="file"&gt;) this could have led to an attack where a user was confused about the origin of the webpage and potentially disclosed information they did not intend to. This vulnerability affects Firefox < 88.

Notes

AuthorNote
tyhicks
mozjs contains a copy of the SpiderMonkey JavaScript engine

Priority

Medium

Cvss 3 Severity Score

3.1

Score breakdown

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
bionic
Released (88.0+build2-0ubuntu0.18.04.2)
focal
Released (88.0+build2-0ubuntu0.20.04.1)
groovy
Released (88.0+build2-0ubuntu0.20.10.1)
impish
Released (88.0.1+build1-0ubuntu2)
jammy
Released (88.0.1+build1-0ubuntu2)
kinetic
Released (88.0.1+build1-0ubuntu2)
lunar
Released (88.0.1+build1-0ubuntu2)
trusty Does not exist

hirsute
Released (88.0+build2-0ubuntu0.21.04.1)
upstream
Released (88)
xenial
Released (88.0+build2-0ubuntu0.16.04.1)
mozjs38
Launchpad, Ubuntu, Debian
impish Does not exist

kinetic Does not exist

lunar Does not exist

upstream Needs triage

trusty Does not exist

xenial Does not exist

bionic Needs triage

focal Does not exist

groovy Does not exist

hirsute Does not exist

jammy Does not exist

mozjs52
Launchpad, Ubuntu, Debian
impish Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

groovy Ignored
(end of life)
bionic Needs triage

focal Needs triage

hirsute Does not exist

jammy Does not exist

mozjs68
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

groovy Ignored
(end of life)
hirsute Does not exist

impish Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

jammy Does not exist

mozjs78
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

groovy Ignored
(end of life)
hirsute Ignored
(end of life)
lunar Needs triage

trusty Does not exist

upstream Needs triage

xenial Does not exist

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

impish Ignored
(end of life)

Severity score breakdown

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