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CVE-2023-6206

Published: 21 November 2023

The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring them to click where the permission grant button would be about to appear. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

Notes

AuthorNote
tyhicks
mozjs contains a copy of the SpiderMonkey JavaScript engine
mdeslaur
starting with Ubuntu 22.04, the firefox package is just a script
that installs the Firefox snap

Priority

Medium

Cvss 3 Severity Score

5.4

Score breakdown

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Ignored
(end of standard support)
bionic Ignored
(end of standard support)
jammy Not vulnerable
(code not present)
lunar Ignored
(end of life, was needs-triage)
mantic Not vulnerable
(code not present)
upstream Needs triage

focal
Released (120.0+build2-0ubuntu0.20.04.1)
thunderbird
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Ignored
(end of standard support)
bionic Ignored
(end of standard support)
focal
Released (1:115.5.0+build1-0ubuntu0.20.04.1)
upstream Needs triage

jammy
Released (1:115.5.0+build1-0ubuntu0.22.04.1)
lunar
Released (1:115.5.0+build1-0ubuntu0.23.04.1)
mantic
Released (1:115.5.0+build1-0ubuntu0.23.10.1)
mozjs38
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Needs triage

focal Does not exist

jammy Does not exist

lunar Does not exist

mantic Does not exist

upstream Needs triage

mozjs52
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Needs triage

focal Needs triage

jammy Does not exist

lunar Does not exist

mantic Does not exist

upstream Needs triage

mozjs68
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Needs triage

jammy Does not exist

lunar Does not exist

mantic Does not exist

upstream Needs triage

mozjs78
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

jammy Needs triage

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

upstream Needs triage

mozjs91
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

jammy Needs triage

lunar Does not exist

mantic Does not exist

upstream Needs triage

mozjs102
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

jammy Needs triage

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

upstream Needs triage

Severity score breakdown

Parameter Value
Base score 5.4
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality Low
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N