Vulnerability identifier: #VU82341

Vulnerability risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-5726

CWE-ID: CWE-451

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mozilla Firefox
Client/Desktop applications / Web browsers
Firefox ESR
Client/Desktop applications / Web browsers

Vendor: Mozilla

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data when handling fullscreen notifications by file opening dialog. A remote attacker can perform spoofing attack.

Note, the vulnerability affects macOS installation only.

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

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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?

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.