CVE-2021-23984
Published: 25 March 2021
A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
Notes
Author | Note |
---|---|
tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
Priority
Status
Package | Release | Status |
---|---|---|
firefox Launchpad, Ubuntu, Debian |
focal |
Released
(87.0+build3-0ubuntu0.20.04.2)
|
groovy |
Released
(87.0+build3-0ubuntu0.20.10.1)
|
|
hirsute |
Released
(87.0+build3-0ubuntu1)
|
|
impish |
Released
(87.0+build3-0ubuntu1)
|
|
jammy |
Released
(87.0+build3-0ubuntu1)
|
|
kinetic |
Released
(87.0+build3-0ubuntu1)
|
|
lunar |
Released
(87.0+build3-0ubuntu1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(87.0)
|
|
xenial |
Released
(87.0+build3-0ubuntu0.16.04.2)
|
|
bionic |
Released
(87.0+build3-0ubuntu0.18.04.2)
|
|
mantic |
Released
(87.0+build3-0ubuntu1)
|
|
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
|
|
trusty |
Does not exist
|
|
upstream |
Released
(78.9.0esr-1)
|
|
xenial |
Does not exist
|
|
mantic |
Does not exist
|
|
mozjs38 Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
focal |
Does not exist
|
|
groovy |
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
|
|
hirsute |
Does not exist
|
|
mantic |
Does not exist
|
|
mozjs52 Launchpad, Ubuntu, Debian |
impish |
Does not exist
|
jammy |
Does not exist
|
|
kinetic |
Does not exist
|
|
lunar |
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
|
|
mantic |
Does not exist
|
|
mozjs68 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
focal |
Needs triage
|
|
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
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
mantic |
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)
|
|
jammy |
Needs triage
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
kinetic |
Ignored
(end of life, was needs-triage)
|
|
impish |
Ignored
(end of life)
|
|
mantic |
Does not exist
|
|
lunar |
Ignored
(end of life, was needs-triage)
|
|
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)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(78.9)
|
|
xenial |
Ignored
(end of standard support, was needed)
|
|
mantic |
Released
(1:78.11.0+build1-0ubuntu2)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 6.5 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | Required |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | High |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23984
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-10/#CVE-2021-23984
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-11/#CVE-2021-23984
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-12/#CVE-2021-23984
- https://ubuntu.com/security/notices/USN-4893-1
- https://ubuntu.com/security/notices/USN-4995-1
- https://ubuntu.com/security/notices/USN-4995-2
- NVD
- Launchpad
- Debian