CVE-2023-4908 in Chrome
Summary
by MITRE • 09/13/2023
Inappropriate implementation in Picture in Picture in Google Chrome prior to 117.0.5938.62 allowed a remote attacker to spoof security UI via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 10/11/2023
The vulnerability identified as CVE-2023-4908 represents a security flaw within Google Chrome's Picture-in-Picture functionality that existed prior to version 117.0.5938.62. This issue falls under the category of inappropriate implementation where the browser fails to properly validate or handle user interface elements during picture-in-picture operations. The flaw allows remote attackers to manipulate the security user interface components through carefully crafted HTML content, potentially leading to misleading visual representations that could deceive users about the actual security state of their browsing environment.
The technical implementation problem stems from insufficient validation mechanisms within Chrome's picture-in-picture feature that handles how security indicators and UI elements are displayed during video playback operations. When users engage with picture-in-picture mode, the browser should maintain consistent security visual cues to alert users about potential risks or confirm the legitimacy of the browsing context. However, this vulnerability enables attackers to inject malicious HTML content that can manipulate these security indicators, creating a false sense of security or misleading users about the actual trustworthiness of the displayed content.
From an operational perspective, this vulnerability poses a significant risk to user security awareness and trust in the browser's security mechanisms. The ability to spoof security UI elements through crafted HTML pages means that attackers could potentially trick users into believing they are interacting with legitimate websites while actually encountering malicious content. This type of attack could be particularly dangerous when combined with other social engineering techniques, as users might be less vigilant about security warnings if they have been deceived by manipulated UI elements. The low severity classification from Chromium does not diminish the potential impact on user trust and security awareness, as even low severity vulnerabilities can be exploited in combination with other techniques to create more sophisticated attacks.
The vulnerability aligns with CWE-693, which deals with protection mechanism failures, specifically in how the browser handles security-related user interface components. This flaw demonstrates a breakdown in the principle of least privilege and proper security boundary enforcement within the browser's rendering engine. The issue also relates to ATT&CK technique T1566, which covers social engineering tactics that can be used to manipulate user behavior through deceptive UI elements. Organizations should consider this vulnerability as part of a broader security awareness framework, particularly when dealing with remote work environments where users may be more susceptible to UI-based deception attacks.
Mitigation strategies should focus on immediate patching of affected Chrome versions to ensure users are protected against this specific implementation flaw. Security teams should also implement monitoring for suspicious HTML content that might attempt to exploit similar UI manipulation techniques. Browser vendors and security researchers recommend that users update to Chrome version 117.0.5938.62 or later where this vulnerability has been addressed. Additionally, organizations should consider implementing web filtering solutions that can detect and block known malicious HTML patterns that might attempt to exploit similar UI spoofing techniques, particularly in environments where users might be exposed to untrusted content sources. The vulnerability underscores the importance of maintaining current browser versions and implementing layered security approaches that can detect and prevent UI manipulation attacks.