CVE-2023-6512 in Chrome
Summary
by MITRE • 12/06/2023
Inappropriate implementation in Web Browser UI in Google Chrome prior to 120.0.6099.62 allowed a remote attacker to potentially spoof the contents of an iframe dialog context menu via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 05/28/2025
The vulnerability identified as CVE-2023-6512 represents a UI implementation flaw within Google Chrome's web browser that affects versions prior to 120.0.6099.62. This issue falls under the category of improper implementation in the browser's user interface components, specifically impacting how iframe dialog contexts are handled within the browser's graphical interface. The vulnerability is classified as low severity by Chromium security standards, yet it presents significant potential for social engineering attacks through content spoofing.
The technical flaw manifests in the browser's handling of iframe dialog context menus where the user interface fails to properly validate or isolate the visual representation of dialog elements. When a malicious actor crafts a specially designed HTML page, the browser's UI implementation allows for the spoofing of iframe dialog contents, potentially misleading users about the actual source or nature of displayed interface elements. This occurs because the browser does not adequately distinguish between legitimate and malicious content when rendering context menu elements within iframe environments, creating a potential attack vector for deception.
The operational impact of this vulnerability extends beyond simple visual spoofing as it can be leveraged in phishing attacks, credential harvesting attempts, and other social engineering campaigns. Attackers can craft web pages that display misleading context menu options or dialog boxes that appear to originate from trusted sources while actually being generated from malicious iframe content. This capability undermines user trust in the browser's UI integrity and can lead to successful deception of users who might otherwise be cautious about security warnings. The vulnerability particularly affects users who interact with web applications that utilize iframe dialog systems, making it relevant to numerous web applications and services.
This issue aligns with CWE-693, which addresses protection mechanism failures in user interfaces, specifically focusing on inadequate protection against user interface manipulation. The vulnerability also maps to ATT&CK technique T1566.001, which covers social engineering through spearphishing attachments, as the spoofing capability can be used to create convincing phishing interfaces. Additionally, the flaw relates to CWE-20, which covers input validation and representation issues, as the browser fails to properly validate the context of iframe dialog content. The security implications suggest that users should prioritize updating to Chrome version 120.0.6099.62 or later, where the implementation has been corrected to properly isolate iframe dialog contexts and prevent unauthorized content spoofing. Organizations should also consider implementing additional browser hardening measures and user awareness training to mitigate potential exploitation attempts. The fix likely involves strengthening the isolation mechanisms between iframe contexts and the main browser UI, ensuring that dialog elements are properly validated before rendering and that visual cues cannot be manipulated to mislead users about content authenticity.