CVE-2021-4221
Published: 22 December 2022
If a domain name contained a RTL character, it would cause the domain to be rendered to the right of the path. This could lead to user confusion and spoofing attacks. <br>*This bug only affects Firefox for Android. Other operating systems are unaffected.*<br>*Note*: Due to a clerical error this advisory was not included in the original announcement, and was added in Feburary 2022. This vulnerability affects Firefox < 92.
Notes
Author | Note |
---|---|
mdeslaur | starting with Ubuntu 22.04, the firefox package is just a script that installs the Firefox snap |
alexmurray | Only affects Firefox for Android |
Priority
Status
Package | Release | Status |
---|---|---|
firefox Launchpad, Ubuntu, Debian |
kinetic |
Not vulnerable
(Firefox for Android only)
|
bionic |
Not vulnerable
(Firefox for Android only)
|
|
focal |
Not vulnerable
(Firefox for Android only)
|
|
jammy |
Not vulnerable
(Firefox for Android only)
|
|
trusty |
Ignored
(end of standard support)
|
|
upstream |
Not vulnerable
(Firefox for Android only)
|
|
xenial |
Ignored
(end of standard support)
|
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 |