#VU85809 Security features bypass in Focus for iOS - CVE-2024-0605

Vulnerability identifier: #VU85809

Vulnerability risk: High

CVSSv4.0: 6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-0605

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Focus for iOS
Client/Desktop applications / Web browsers

Vendor: Mozilla

Description

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

The vulnerability exists due to a race condition in javascript: URI with a setTimeout running on top origin sites. A remote attacker can  execute arbitrary scripts on top origin sites in urlbar and compromise any loaded page.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Focus for iOS: 2.0 - 121.0

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External links
https://bugzilla.mozilla.org/show_bug.cgi?id=1855575
https://www.mozilla.org/security/advisories/mfsa2024-03/

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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.