Your submission was sent successfully! Close

CVE-2021-23969

Published: 26 February 2021

As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.

Priority

Medium

CVSS 3 base score: 4.3

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
bionic
Released (86.0+build3-0ubuntu0.18.04.1)
focal
Released (86.0+build3-0ubuntu0.20.04.1)
groovy
Released (86.0+build3-0ubuntu0.20.10.1)
hirsute
Released (86.0+build3-0ubuntu1)
impish
Released (86.0+build3-0ubuntu1)
jammy
Released (86.0+build3-0ubuntu1)
precise Does not exist

trusty Does not exist

upstream
Released (86)
xenial
Released (86.0+build3-0ubuntu0.16.04.1)
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

precise Does not exist

trusty Does not exist

upstream
Released (78.8.0esr-1)
xenial Does not exist

mozjs38
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mozjs52
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

groovy Ignored
(reached end-of-life)
hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mozjs60
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

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mozjs68
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

groovy Ignored
(reached end-of-life)
hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mozjs78
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

groovy Ignored
(reached end-of-life)
hirsute Ignored
(reached end-of-life)
impish Needs triage

jammy Needs triage

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

thunderbird
Launchpad, Ubuntu, Debian
bionic
Released (1:78.8.1+build1-0ubuntu0.18.04.1)
focal
Released (1:78.8.1+build1-0ubuntu0.20.04.1)
groovy
Released (1:78.8.1+build1-0ubuntu0.20.10.1)
hirsute Not vulnerable
(1:78.8.1+build1-0ubuntu1)
impish Not vulnerable
(1:78.8.1+build1-0ubuntu1)
jammy Not vulnerable
(1:78.8.1+build1-0ubuntu1)
precise Does not exist

trusty Does not exist

upstream
Released (78.8)
xenial Needed