CVE-2021-4128
Published: 22 December 2022
When transitioning in and out of fullscreen mode, a graphics object was not correctly protected; resulting in memory corruption and a potentially exploitable crash.<br>*This bug only affects Firefox on MacOS. Other operating systems are unaffected.*. This vulnerability affects Firefox < 95.
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 MacOS |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
firefox Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(Firefox for MacOS only)
|
| focal |
Not vulnerable
(Firefox for MacOS only)
|
|
| jammy |
Not vulnerable
(Firefox for MacOS only)
|
|
| kinetic |
Not vulnerable
(Firefox for MacOS only)
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Not vulnerable
(Firefox for MacOS only)
|
|
| xenial |
Ignored
(end of standard support)
|
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 | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |