CVE-2022-28868 in Safe Browser
Summary
by MITRE • 04/15/2022
An Address bar spoofing vulnerability was discovered in Safe Browser for Android. When user clicks on a specially crafted malicious webpage/URL, user may be tricked for a short period of time (until the page loads) to think content may be coming from a valid domain, while the content comes from the attacker controlled site.
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Analysis
by VulDB Data Team • 04/20/2022
The CVE-2022-28868 vulnerability represents a critical address bar spoofing flaw within Safe Browser for Android, a security-focused mobile browser designed to protect users from malicious online content. This vulnerability exploits the browser's user interface presentation mechanism to deceive users into believing they are visiting a legitimate website when in fact they are interacting with an attacker-controlled domain. The flaw specifically targets the visual trust indicators that users rely upon when navigating the internet, creating a deceptive environment where the browser's address bar displays misleading information about the website's authenticity.
The technical implementation of this vulnerability stems from improper validation of URL presentation within the browser's interface. When users encounter a maliciously crafted webpage, the browser fails to adequately distinguish between legitimate and malicious origins during the initial loading phase. This creates a temporal window where the address bar displays the domain of a trusted website while simultaneously loading content from an attacker-controlled source. The vulnerability operates through a combination of HTML rendering manipulation and browser navigation handling that allows the malicious site to temporarily masquerade as a legitimate domain, exploiting user trust in familiar website addresses.
The operational impact of this vulnerability extends beyond simple deception, creating potential vectors for phishing attacks, credential theft, and malicious content delivery. Users who encounter this spoofing scenario may unknowingly enter sensitive information such as login credentials, personal data, or financial details into forms that appear to originate from trusted domains. The brief duration of the deception, typically lasting only until the page fully loads, does not mitigate the risk as attackers can leverage this window to execute successful social engineering campaigns. This vulnerability particularly affects users who rely on Safe Browser's security features for protection, creating a false sense of security while simultaneously exposing them to targeted attacks.
Security professionals should consider this vulnerability in the context of CWE-601, which addresses URL redirection and forwarding vulnerabilities that can lead to user confusion and security bypasses. The flaw aligns with ATT&CK technique T1566.001, which covers spearphishing with links, as it enables attackers to craft convincing phishing campaigns that exploit user trust in familiar website domains. Organizations and individuals should implement additional verification measures beyond browser security features, including multi-factor authentication, security awareness training, and regular monitoring of suspicious URL patterns. The vulnerability highlights the importance of robust input validation and secure user interface design principles, particularly in security-focused applications where user trust is paramount.
Mitigation strategies should include immediate patch deployment when available, user education about recognizing potential spoofing attempts, and implementation of additional security layers such as web application firewalls and content filtering solutions. Browser vendors should enhance their URL validation mechanisms and implement more robust origin verification protocols. Regular security audits of browser interfaces and user experience elements should be conducted to identify similar presentation-based vulnerabilities. Organizations utilizing Safe Browser should consider implementing additional security controls and monitoring systems to detect and respond to potential exploitation attempts, as the vulnerability represents a fundamental flaw in the browser's trust model that can be leveraged by sophisticated attackers.