Vulnerability identifier: #VU82340

Vulnerability risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-5725

CWE-ID: CWE-264

Exploitation vector: Local

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 malicious extension to bypass implemented security restrictions.

The vulnerability exists due to improperly imposed security restrictions in WebExtension, which can open arbitrary URLs. A malicious extension can collect sensitive user data.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 102.0.1 - 118.0.2

Firefox ESR: 115.0 - 115.3.1, 102.0 - 102.15.1

Firefox for Android: 101.2.0 - 118.2.0

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External links
http://www.mozilla.org/en-US/security/advisories/mfsa2023-46/
http://www.mozilla.org/en-US/security/advisories/mfsa2023-45/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.