CVE-2020-26953
Published: 17 November 2020
It was possible to cause the browser to enter fullscreen mode without displaying the security UI; thus making it possible to attempt a phishing attack or otherwise confuse the user. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
Notes
Author | Note |
---|---|
tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
Priority
Status
Package | Release | Status |
---|---|---|
firefox Launchpad, Ubuntu, Debian |
bionic |
Released
(83.0+build2-0ubuntu0.18.04.2)
|
focal |
Released
(83.0+build2-0ubuntu0.20.04.1)
|
|
groovy |
Released
(83.0+build2-0ubuntu0.20.10.1)
|
|
hirsute |
Released
(83.0+build2-0ubuntu1)
|
|
impish |
Released
(83.0+build2-0ubuntu1)
|
|
jammy |
Released
(83.0+build2-0ubuntu1)
|
|
kinetic |
Released
(83.0+build2-0ubuntu1)
|
|
lunar |
Released
(83.0+build2-0ubuntu1)
|
|
mantic |
Released
(83.0+build2-0ubuntu1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(83)
|
|
xenial |
Released
(83.0+build2-0ubuntu0.16.04.3)
|
|
mozjs38 Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
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
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
mozjs52 Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
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
|
|
mantic |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
mozjs60 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
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
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
|
|
mantic |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
thunderbird Launchpad, Ubuntu, Debian |
bionic |
Released
(1:78.8.1+build1-0ubuntu0.18.04.1)
|
focal |
Released
(1:78.7.1+build1-0ubuntu0.20.04.1)
|
|
groovy |
Released
(1:78.5.0+build3-0ubuntu0.20.10.1)
|
|
hirsute |
Released
(1:78.5.0+build3-0ubuntu1)
|
|
impish |
Released
(1:78.5.0+build3-0ubuntu1)
|
|
jammy |
Released
(1:78.5.0+build3-0ubuntu1)
|
|
kinetic |
Released
(1:78.5.0+build3-0ubuntu1)
|
|
lunar |
Released
(1:78.5.0+build3-0ubuntu1)
|
|
mantic |
Released
(1:78.5.0+build3-0ubuntu1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(78.5)
|
|
xenial |
Ignored
(end of standard support, was needs-triage)
|
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://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-26953
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-52/#CVE-2020-26953
- https://ubuntu.com/security/notices/USN-4637-1
- https://ubuntu.com/security/notices/USN-4637-2
- https://ubuntu.com/security/notices/USN-4647-1
- https://www.cve.org/CVERecord?id=CVE-2020-26953
- NVD
- Launchpad
- Debian