CVE-2022-28869 in Safe Browser
Summary
by MITRE • 04/15/2022
A vulnerability affecting F-Secure SAFE browser was discovered. A maliciously crafted website could make a phishing attack with address bar spoofing as the browser did not show full URL, such as port number.
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Analysis
by VulDB Data Team • 04/20/2022
The vulnerability identified as CVE-2022-28869 represents a critical security flaw within the F-Secure SAFE browser implementation that directly impacts user trust and authentication mechanisms. This issue stems from inadequate URL display handling within the browser's address bar functionality, creating a significant attack surface for sophisticated phishing operations. The vulnerability specifically manifests when the browser fails to properly render complete Uniform Resource Locator information, including port numbers and other identifying components that users typically rely upon for verifying website authenticity.
From a technical perspective, this flaw constitutes a user interface deception mechanism that violates fundamental security principles of web browser operation. The browser's address bar spoofing capability allows malicious actors to craft websites that appear legitimate while concealing critical URL components that would normally alert users to potential threats. This behavior directly correlates to CWE-601, which addresses URL redirector vulnerabilities where applications fail to properly validate or display redirect targets. The implementation flaw occurs at the presentation layer of the browser where URL components are processed and displayed to end users.
The operational impact of this vulnerability extends far beyond simple phishing vector exploitation, as it fundamentally undermines the security model that users depend upon when navigating the web. Attackers can leverage this weakness to create convincing fake banking sites, social media platforms, or corporate portals that appear authentic to unsuspecting users. The absence of complete URL information, particularly port numbers that often indicate non-standard web server configurations, removes crucial verification points that users typically examine before entering sensitive information. This vulnerability enables sophisticated social engineering campaigns that would otherwise be detectable through standard browser security features.
Security professionals must recognize this issue as a significant concern within the context of the ATT&CK framework's T1566, which covers phishing techniques that exploit user trust in browser interfaces. The vulnerability creates an environment where attackers can bypass traditional security controls that rely on user verification of website authenticity. Mitigation strategies should include immediate browser updates from F-Secure, user education regarding URL verification practices, and enhanced monitoring for suspicious website behavior. Organizations should implement additional security layers such as DNS filtering and web application firewalls to protect against exploitation of this vulnerability while waiting for official patches. The flaw also highlights the importance of maintaining robust browser security through continuous testing and validation of user interface security controls that directly impact user decision-making processes during web navigation.