#VU72258 Security features bypass in Mozilla Firefox - CVE-2023-25740

Vulnerability identifier: #VU72258

Vulnerability risk: Medium

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-25740

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

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

Vendor: Mozilla

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to an error when handling .scf scrips that are opened by the browser from the local filesystem. A remote attacker can trick the victim into launching a specially crafted .scf script that then initiates network requests from the operating system to the malicious server. A remote attacker can obtain potentially sensitive information including NTLM credentials.

Note, the vulnerability affects Windows installations only.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 103.0 - 109.0

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External links
https://www.mozilla.org/en-US/security/advisories/mfsa2023-05/

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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.