Address Bar Spoofing in Arc Browser

Executive Summary

This vulnerability is an address bar spoofing issue in Arc browser. It allows an attacker to trick users by displaying a fake URL in the address bar using a <select> element that triggers fullscreen mode without showing the fullscreen notification.

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Detection Guidance

This vulnerability involves address bar spoofing in Arc browser via a <select> element triggering fullscreen without notification. Detection requires manual inspection of browser behavior and UI elements. Check for unexpected fullscreen transitions or mismatched URLs in the address bar during interactions with <select> elements.

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Impact Analysis

This could lead to phishing attacks where users believe they are on a legitimate website but are actually on a malicious one. It may trick users into entering sensitive information or downloading malware.

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Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by enabling phishing attacks through address bar spoofing. Attackers could trick users into believing they are on a legitimate site, leading to unauthorized data disclosure or access, which violates privacy and security requirements under these regulations.

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Mitigation Strategies

Update Arc browser to the latest version to patch the address bar spoofing issue. Avoid clicking suspicious links or granting fullscreen permissions to untrusted websites.

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