CVE-2023-2467 in Chrome
Summary
by MITRE • 05/03/2023
Inappropriate implementation in Prompts in Google Chrome on Android prior to 113.0.5672.63 allowed a remote attacker to bypass permissions restrictions via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 05/27/2023
The vulnerability identified as CVE-2023-2467 represents a permissions bypass flaw within Google Chrome's implementation of prompt handling on Android platforms. This issue affects Chrome versions prior to 113.0.5672.63 and stems from an inappropriate implementation in how the browser processes prompts, specifically allowing malicious actors to circumvent intended security restrictions through carefully crafted HTML content. The vulnerability resides in the browser's permission model where legitimate prompt behaviors are being exploited to gain unauthorized access to restricted functionality.
The technical flaw manifests in the improper handling of prompt requests within the Chrome browser's Android implementation. When a web page presents a crafted HTML page containing malicious prompt triggers, the browser fails to properly validate or restrict these requests according to established permission boundaries. This misimplementation allows remote attackers to execute unauthorized actions that should normally be restricted by the browser's security model. The vulnerability operates at the intersection of web application behavior and browser permission enforcement, creating an avenue for attackers to bypass intended security controls.
From an operational impact perspective, this vulnerability enables remote attackers to potentially access restricted browser functionalities without proper user consent or authorization. The low severity classification indicates that while the flaw does not directly enable arbitrary code execution or complete system compromise, it does allow for unauthorized access to browser features that should remain protected. Attackers could potentially exploit this to gather sensitive information, manipulate browser behavior, or gain access to restricted APIs that are typically protected by permission systems. The Android-specific nature of this vulnerability means that mobile users are particularly at risk when browsing untrusted websites.
Security mitigations for this vulnerability involve updating to Chrome version 113.0.5672.63 or later where the implementation has been corrected to properly enforce permission restrictions during prompt handling. Organizations should ensure their mobile device management policies include automatic browser updates to prevent exploitation of this and similar vulnerabilities. The fix addresses the core issue by implementing proper validation of prompt requests and ensuring that all permission checks are properly enforced regardless of the HTML content being processed. This aligns with the principle of least privilege enforcement in security architecture.
This vulnerability relates to CWE-284 which describes improper access control in software implementations. The flaw demonstrates a weakness in how Chrome's Android implementation handles access control for prompt-related functionality, where proper permission boundaries are not maintained. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and defense evasion by allowing attackers to bypass security controls that should normally prevent unauthorized access to browser features. The vulnerability also touches upon T1059 which involves executing malicious code through web-based interfaces, as the crafted HTML page serves as the delivery mechanism for the exploit.
The remediation process requires comprehensive browser update deployment across affected Android devices, with particular attention to enterprise environments where mobile device management systems need to be configured to enforce timely updates. Security teams should monitor for any reports of exploitation attempts and consider implementing network-based detection measures that can identify suspicious prompt-related traffic patterns. The fix demonstrates the importance of maintaining strict permission boundaries in browser implementations and the critical need for continuous security validation of web platform features to prevent unauthorized access to restricted functionality. Organizations should also review their mobile security policies to ensure that users are not exposed to unnecessary risks through outdated browser versions.