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-2021-23984

Published: 25 March 2021

A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.

Notes

AuthorNote
tyhicks
mozjs contains a copy of the SpiderMonkey JavaScript engine

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
focal
Released (87.0+build3-0ubuntu0.20.04.2)
groovy
Released (87.0+build3-0ubuntu0.20.10.1)
hirsute
Released (87.0+build3-0ubuntu1)
impish
Released (87.0+build3-0ubuntu1)
jammy
Released (87.0+build3-0ubuntu1)
kinetic
Released (87.0+build3-0ubuntu1)
lunar
Released (87.0+build3-0ubuntu1)
trusty Does not exist

upstream
Released (87.0)
xenial
Released (87.0+build3-0ubuntu0.16.04.2)
bionic
Released (87.0+build3-0ubuntu0.18.04.2)
mantic
Released (87.0+build3-0ubuntu1)
firefox-esr
Launchpad, Ubuntu, Debian
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

trusty Does not exist

upstream
Released (78.9.0esr-1)
xenial Does not exist

mantic Does not exist

mozjs38
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

groovy Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

hirsute Does not exist

mantic Does not exist

mozjs52
Launchpad, Ubuntu, Debian
impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

bionic Needs triage

focal Needs triage

groovy Ignored
(end of life)
hirsute Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic 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

jammy Does not exist

kinetic Does not exist

lunar Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic 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)
jammy Needs triage

trusty Does not exist

upstream Needs triage

xenial Does not exist

kinetic Ignored
(end of life, was needs-triage)
impish Ignored
(end of life)
mantic Does not exist

lunar Ignored
(end of life, was needs-triage)
thunderbird
Launchpad, Ubuntu, Debian
bionic
Released (1:78.11.0+build1-0ubuntu0.18.04.2)
focal
Released (1:78.11.0+build1-0ubuntu0.20.04.2)
groovy
Released (1:78.11.0+build1-0ubuntu0.20.10.2)
hirsute
Released (1:78.11.0+build1-0ubuntu0.21.04.2)
impish
Released (1:78.11.0+build1-0ubuntu2)
jammy
Released (1:78.11.0+build1-0ubuntu2)
kinetic
Released (1:78.11.0+build1-0ubuntu2)
lunar
Released (1:78.11.0+build1-0ubuntu2)
trusty Does not exist

upstream
Released (78.9)
xenial Ignored
(end of standard support, was needed)
mantic
Released (1:78.11.0+build1-0ubuntu2)

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N