Vulnerability identifier: #VU68405

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-42927

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mozilla Firefox
Client/Desktop applications / Web browsers
Firefox ESR
Client/Desktop applications / Web browsers
Firefox for Android
Mobile applications / Apps for mobile phones

Vendor: Mozilla

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to same-origin policy violation in the performance.getEntries() method. A remote attacker can trick the victim to open a specially crafted website and gain obtain cross-origin URL entries.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 100.0 - 105.0.3

Firefox ESR: 102.0 - 102.3.0

Firefox for Android: 100.1.0 - 105.2.0

---

External links
http://www.mozilla.org/en-US/security/advisories/mfsa2022-44/
http://www.mozilla.org/en-US/security/advisories/mfsa2022-45/

---

Q & A

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.