CVE-2021-23999
Published: 19 April 2021
If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Notes
Author | Note |
---|---|
tyhicks |
mozjs contains a copy of the SpiderMonkey JavaScript engine |
Priority
Status
Package | Release | Status |
---|---|---|
firefox
Launchpad, Ubuntu, Debian |
bionic |
Released
(88.0+build2-0ubuntu0.18.04.2)
|
focal |
Released
(88.0+build2-0ubuntu0.20.04.1)
|
|
groovy |
Released
(88.0+build2-0ubuntu0.20.10.1)
|
|
hirsute |
Released
(88.0+build2-0ubuntu0.21.04.1)
|
|
impish |
Released
(88.0.1+build1-0ubuntu2)
|
|
jammy |
Released
(88.0.1+build1-0ubuntu2)
|
|
kinetic |
Released
(88.0.1+build1-0ubuntu2)
|
|
lunar |
Released
(88.0.1+build1-0ubuntu2)
|
|
mantic |
Released
(88.0.1+build1-0ubuntu2)
|
|
noble |
Released
(88.0.1+build1-0ubuntu2)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(88)
|
|
xenial |
Released
(88.0+build2-0ubuntu0.16.04.1)
|
|
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
|
|
kinetic |
Does not exist
|
|
lunar |
Does not exist
|
|
mantic |
Does not exist
|
|
noble |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
mozjs38
Launchpad, Ubuntu, Debian |
bionic |
Ignored
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
hirsute |
Does not exist
|
|
impish |
Does not exist
|
|
jammy |
Does not exist
|
|
kinetic |
Does not exist
|
|
lunar |
Does not exist
|
|
mantic |
Does not exist
|
|
noble |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Ignored
|
|
xenial |
Does not exist
|
|
mozjs52
Launchpad, Ubuntu, Debian |
bionic |
Ignored
|
focal |
Ignored
|
|
groovy |
Ignored
(end of life)
|
|
hirsute |
Does not exist
|
|
impish |
Does not exist
|
|
jammy |
Does not exist
|
|
kinetic |
Does not exist
|
|
lunar |
Does not exist
|
|
mantic |
Does not exist
|
|
noble |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Ignored
|
|
xenial |
Does not exist
|
|
mozjs68
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
focal |
Ignored
|
|
groovy |
Ignored
(end of life)
|
|
hirsute |
Does not exist
|
|
impish |
Does not exist
|
|
jammy |
Does not exist
|
|
kinetic |
Does not exist
|
|
lunar |
Does not exist
|
|
mantic |
Does not exist
|
|
noble |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Ignored
|
|
xenial |
Does not exist
|
|
mozjs78
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
focal |
Does not exist
|
|
groovy |
Ignored
(end of life)
|
|
hirsute |
Ignored
(end of life)
|
|
impish |
Ignored
(end of life)
|
|
jammy |
Ignored
|
|
kinetic |
Ignored
(end of life, was needs-triage)
|
|
lunar |
Ignored
(end of life, was needs-triage)
|
|
mantic |
Does not exist
|
|
noble |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Ignored
|
|
xenial |
Does not exist
|
|
thunderbird
Launchpad, Ubuntu, Debian |
bionic |
Released
(1:78.11.0+build1-0ubuntu0.18.04.2)
|
focal |
Released
(1:78.11.0+build1-0ubuntu0.20.04.2)
|
|
groovy |
Released
(1:78.11.0+build1-0ubuntu0.20.10.2)
|
|
hirsute |
Released
(1:78.11.0+build1-0ubuntu0.21.04.2)
|
|
impish |
Released
(1:78.11.0+build1-0ubuntu2)
|
|
jammy |
Released
(1:78.11.0+build1-0ubuntu2)
|
|
kinetic |
Released
(1:78.11.0+build1-0ubuntu2)
|
|
lunar |
Released
(1:78.11.0+build1-0ubuntu2)
|
|
mantic |
Released
(1:78.11.0+build1-0ubuntu2)
|
|
noble |
Released
(1:78.11.0+build1-0ubuntu2)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(78.10)
|
|
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 |
References
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-14/#CVE-2021-23999
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-15/#CVE-2021-23999
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-16/#CVE-2021-23999
- https://ubuntu.com/security/notices/USN-4926-1
- https://ubuntu.com/security/notices/USN-4995-1
- https://ubuntu.com/security/notices/USN-4995-2
- https://www.cve.org/CVERecord?id=CVE-2021-23999
- NVD
- Launchpad
- Debian