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CVE-2021-23988

Published: 25 March 2021

Mozilla developers reported memory safety bugs present in Firefox 86. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 87.

Notes

AuthorNote
tyhicks
mozjs contains a copy of the SpiderMonkey JavaScript engine

Priority

Medium

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
impish
Released (87.0+build3-0ubuntu1)
bionic
Released (87.0+build3-0ubuntu0.18.04.2)
focal
Released (87.0+build3-0ubuntu0.20.04.2)
groovy
Released (87.0+build3-0ubuntu0.20.10.1)
hirsute
Released (87.0+build3-0ubuntu1)
trusty Does not exist

upstream
Released (87.0)
xenial
Released (87.0+build3-0ubuntu0.16.04.2)
jammy
Released (87.0+build3-0ubuntu1)
kinetic
Released (87.0+build3-0ubuntu1)
lunar
Released (87.0+build3-0ubuntu1)
mantic
Released (87.0+build3-0ubuntu1)
mozjs38
Launchpad, Ubuntu, Debian
impish Does not exist

bionic Needs triage

focal Does not exist

groovy Does not exist

hirsute 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

mantic Does not exist

mozjs52
Launchpad, Ubuntu, Debian
impish 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

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

mozjs68
Launchpad, Ubuntu, Debian
impish Does not exist

bionic Does not exist

focal Needs triage

trusty Does not exist

upstream Needs triage

xenial Does not exist

groovy Ignored
(end of life)
hirsute Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

mozjs78
Launchpad, Ubuntu, Debian
impish Ignored
(end of life)
bionic Does not exist

focal Does not exist

groovy Ignored
(end of life)
hirsute Ignored
(end of life)
trusty Does not exist

upstream Needs triage

xenial Does not exist

jammy Needs triage

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

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

Severity score breakdown

Parameter Value
Base score 8.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H