CVE-2021-43540
Published: 8 December 2021
WebExtensions with the correct permissions were able to create and install ServiceWorkers for third-party websites that would not have been uninstalled with the extension. This vulnerability affects Firefox < 95.
Priority
Medium
CVSS 3 base score: 6.5
Status
| Package | Release | Status |
|---|---|---|
|
firefox Launchpad, Ubuntu, Debian |
bionic |
Released
(95.0+build1-0ubuntu0.18.04.1)
|
| focal |
Released
(95.0+build1-0ubuntu0.20.04.1)
|
|
| hirsute |
Released
(95.0+build1-0ubuntu0.21.04.1)
|
|
| impish |
Released
(95.0+build1-0ubuntu0.21.10.1)
|
|
| jammy |
Released
(95.0+build1-0ubuntu1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(95)
|
|
| xenial |
Needed
|
Notes
| Author | Note |
|---|---|
| tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43540
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-52/#CVE-2021-43540
- https://ubuntu.com/security/notices/USN-5186-1
- NVD
- Launchpad
- Debian