Vulnerability identifier: #VU58610
Vulnerability risk: Medium
Exploitation vector: Network
Exploit availability: No
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to an error with WebExtensions that causes a WebExtension with the correct permissions to create and install ServiceWorkers for third-party websites that cannot be uninstalled with the extension.
Install updates from vendor's website.
Vulnerable software versions
Mozilla Firefox: 90.0 - 94.0.2
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.