CVE-2021-38506
Published: 3 November 2021
Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
Notes
Author | Note |
---|---|
tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
Priority
Status
Package | Release | Status |
---|---|---|
firefox Launchpad, Ubuntu, Debian |
bionic |
Released
(94.0+build3-0ubuntu0.18.04.1)
|
focal |
Released
(94.0+build3-0ubuntu0.20.04.1)
|
|
hirsute |
Released
(94.0+build3-0ubuntu0.21.04.1)
|
|
impish |
Released
(94.0+build3-0ubuntu0.21.10.1)
|
|
jammy |
Released
(94.0+build3-0ubuntu1)
|
|
kinetic |
Released
(94.0+build3-0ubuntu1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(94)
|
|
xenial |
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
|
|
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
|
|
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
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
mozjs78 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
focal |
Does not exist
|
|
hirsute |
Ignored
(reached end-of-life)
|
|
impish |
Ignored
(reached end-of-life)
|
|
jammy |
Needs triage
|
|
kinetic |
Needs triage
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
thunderbird Launchpad, Ubuntu, Debian |
bionic |
Released
(1:91.5.0+build1-0ubuntu0.18.04.1)
|
focal |
Released
(1:91.5.0+build1-0ubuntu0.20.04.1)
|
|
hirsute |
Ignored
(reached end-of-life)
|
|
impish |
Released
(1:91.3.1+build1-0ubuntu0.21.10.1)
|
|
jammy |
Released
(1:91.3.1+build1-0ubuntu1)
|
|
kinetic |
Released
(1:91.3.1+build1-0ubuntu1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(91.3)
|
|
xenial |
Needed
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 4.3 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | Required |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | Low |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38506
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-48/#CVE-2021-38506
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-49/#CVE-2021-38506
- https://ubuntu.com/security/notices/USN-5131-1
- https://ubuntu.com/security/notices/USN-5152-1
- https://ubuntu.com/security/notices/USN-5248-1
- NVD
- Launchpad
- Debian