CVE-2021-29981
Published: 11 August 2021
An issue present in lowering/register allocation could have led to obscure but deterministic register confusion failures in JITted code that would lead to a potentially exploitable crash. This vulnerability affects Firefox < 91 and Thunderbird < 91.
Notes
Author | Note |
---|---|
tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
Priority
Status
Package | Release | Status |
---|---|---|
firefox Launchpad, Ubuntu, Debian |
bionic |
Released
(91.0+build2-0ubuntu0.18.04.1)
|
focal |
Released
(91.0+build2-0ubuntu0.20.04.1)
|
|
hirsute |
Released
(91.0+build2-0ubuntu0.21.04.1)
|
|
impish |
Released
(91.0+build2-0ubuntu1)
|
|
jammy |
Released
(91.0+build2-0ubuntu1)
|
|
kinetic |
Released
(91.0+build2-0ubuntu1)
|
|
lunar |
Released
(91.0+build2-0ubuntu1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(91)
|
|
xenial |
Ignored
(end of standard support, was needed)
|
|
mozjs38 Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
focal |
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 |
Needs triage
|
|
xenial |
Does not exist
|
|
mozjs52 Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
focal |
Needs triage
|
|
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
|
|
mozjs68 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
focal |
Needs triage
|
|
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
|
|
mozjs78 Launchpad, Ubuntu, Debian |
jammy |
Needs triage
|
lunar |
Needs triage
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
bionic |
Does not exist
|
|
focal |
Does not exist
|
|
hirsute |
Ignored
(end of life)
|
|
kinetic |
Ignored
(end of life, was needs-triage)
|
|
impish |
Ignored
(end of life)
|
|
thunderbird Launchpad, Ubuntu, Debian |
jammy |
Not vulnerable
(1:91.1.2+build1-0ubuntu1)
|
kinetic |
Not vulnerable
(1:91.1.2+build1-0ubuntu1)
|
|
lunar |
Not vulnerable
(1:91.1.2+build1-0ubuntu1)
|
|
trusty |
Does not exist
|
|
impish |
Not vulnerable
(1:91.1.2+build1-0ubuntu1)
|
|
upstream |
Released
(91)
|
|
hirsute |
Ignored
(end of life)
|
|
bionic |
Released
(1:91.5.0+build1-0ubuntu0.18.04.1)
|
|
focal |
Released
(1:91.5.0+build1-0ubuntu0.20.04.1)
|
|
xenial |
Ignored
(end of standard support, was needed)
|
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 |