CVE-2024-5022 in Focus
Summary
by MITRE • 05/17/2024
The file scheme of URLs would be hidden, resulting in potential spoofing of a website's address in the location bar This vulnerability affects Focus for iOS < 126.
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Analysis
by VulDB Data Team • 03/29/2025
The vulnerability described in CVE-2024-5022 represents a significant security flaw in the Focus for iOS web browser application affecting versions prior to 126. This issue stems from improper handling of URL schemes where the file scheme component would be concealed from users, creating a deceptive user experience that could enable malicious actors to craft convincing phishing attempts. The core problem manifests when users encounter web addresses in the browser's location bar, where the actual file scheme portion of the URL becomes obscured, making it difficult for users to distinguish between legitimate and malicious web addresses. This vulnerability directly impacts user trust and security awareness by allowing attackers to potentially mask the true nature of web addresses, particularly when dealing with file-based URLs that might appear to be from trusted domains but actually lead to malicious content.
The technical implementation flaw occurs within the URL parsing and display mechanisms of the Focus browser application. When processing URLs that contain file schemes, the browser fails to properly render or display the scheme component in the location bar interface, creating a visual deception that can mislead users about the actual origin of web content. This behavior creates a condition where legitimate websites might appear to have different schemes than they actually possess, or where malicious actors can craft URLs that appear to be from trusted sources while actually directing users to harmful destinations. The vulnerability falls under the category of user interface deception and information hiding techniques that can be exploited to manipulate user perception and decision-making processes during web browsing activities.
The operational impact of this vulnerability extends beyond simple visual deception to potentially enable sophisticated phishing attacks and social engineering campaigns. Users operating Focus for iOS versions prior to 126 may unknowingly navigate to malicious websites that appear legitimate due to the obscured file scheme information. This creates an environment where attackers can exploit user trust by crafting URLs that visually mimic trusted domains while actually containing file scheme components that redirect to harmful content. The vulnerability particularly affects users who might be browsing sensitive websites or conducting financial transactions, as the deception could lead to credential theft, malware installation, or financial fraud. Security researchers have identified this as a potential vector for advanced persistent threats that leverage user interface manipulation to bypass traditional security controls.
Mitigation strategies for CVE-2024-5022 require immediate action to upgrade Focus for iOS to version 126 or later, which contains the necessary patches to properly display URL schemes in the location bar. Organizations should implement comprehensive security awareness training programs to educate users about recognizing potential URL deception techniques and the importance of verifying website authenticity through multiple means beyond visual inspection of address bars. Network administrators should consider implementing additional security layers such as web filtering solutions and URL reputation services to provide defense-in-depth against potential exploitation of this vulnerability. The fix addresses the root cause by ensuring proper URL scheme rendering in the browser's user interface, thereby restoring user confidence in the authenticity of web addresses displayed during browsing sessions. This vulnerability demonstrates the critical importance of maintaining up-to-date security software and highlights the risks associated with user interface deception in mobile browser environments, aligning with common attack patterns documented in the attack tree framework where user perception manipulation serves as a primary exploitation vector.