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CVE-2021-29975

Published: 15 July 2021

Through a series of DOM manipulations, a message, over which the attacker had control of the text but not HTML or formatting, could be overlaid on top of another domain (with the new domain correctly shown in the address bar) resulting in possible user confusion. This vulnerability affects Firefox < 90.

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
impish
Released (90.0+build1-0ubuntu1)
trusty Does not exist

xenial Ignored
(end of standard support, was needed)
bionic
Released (90.0+build1-0ubuntu0.18.04.1)
focal
Released (90.0+build1-0ubuntu0.20.04.1)
groovy
Released (90.0+build1-0ubuntu0.20.10.1)
hirsute
Released (90.0+build1-0ubuntu0.21.04.1)
upstream
Released (90)
jammy
Released (90.0+build1-0ubuntu1)
kinetic
Released (90.0+build1-0ubuntu1)
lunar
Released (90.0+build1-0ubuntu1)
mozjs38
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

groovy 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

mozjs52
Launchpad, Ubuntu, Debian
impish Does not exist

trusty Does not exist

xenial Does not exist

bionic Needs triage

focal Needs triage

hirsute Does not exist

upstream Needs triage

groovy Ignored
(end of life)
jammy Does not exist

kinetic Does not exist

lunar Does not exist

mozjs68
Launchpad, Ubuntu, Debian
impish Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Needs triage

hirsute Does not exist

upstream Needs triage

groovy Ignored
(end of life)
jammy Does not exist

kinetic Does not exist

lunar Does not exist

thunderbird
Launchpad, Ubuntu, Debian
bionic Not vulnerable

focal Not vulnerable

groovy Ignored
(end of life)
hirsute Not vulnerable

impish Not vulnerable

trusty Does not exist

upstream Needs triage

xenial Not vulnerable

jammy Not vulnerable

kinetic Not vulnerable

lunar Not vulnerable

mozjs78
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

upstream Needs triage

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

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

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