CVE-2024-1671 in Chrome
Summary
by MITRE • 02/21/2024
Inappropriate implementation in Site Isolation in Google Chrome prior to 122.0.6261.57 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 04/19/2025
The vulnerability identified as CVE-2024-1671 represents a critical flaw in Google Chrome's site isolation implementation that affects versions prior to 122.0.6261.57. This issue falls under the broader category of improper implementation within browser security mechanisms, specifically targeting the content security policy enforcement system. The vulnerability operates at the intersection of web browser architecture and security policy enforcement, creating a pathway for remote attackers to circumvent fundamental security controls that protect users from malicious content. Site isolation is a core security feature designed to prevent cross-site scripting attacks by maintaining separate processes for different websites, yet this flaw demonstrates how implementation gaps can undermine even well-intentioned security measures.
The technical flaw manifests when a malicious actor crafts a specific HTML page that exploits weaknesses in how Chrome handles site isolation boundaries. This allows the attacker to bypass content security policy restrictions that should normally prevent unauthorized access to resources or execution of malicious scripts across different origins. The vulnerability specifically targets the mechanism that enforces isolation between different web sites within the browser's architecture, enabling attackers to potentially access or manipulate content that should be restricted to separate processes. This bypass occurs through manipulation of the browser's rendering and execution contexts, where the site isolation mechanism fails to properly enforce the boundaries that separate different origins.
The operational impact of this vulnerability extends beyond simple policy bypass, as it represents a fundamental breakdown in the browser's security architecture that could enable more sophisticated attacks. Attackers could potentially leverage this flaw to access sensitive data from other sites, execute unauthorized scripts, or manipulate browser behavior in ways that compromise user privacy and security. The medium severity classification reflects the significant risk this vulnerability poses to user protection mechanisms, particularly in environments where users may encounter untrusted content. This type of flaw directly impacts the chromium security model and could potentially enable attacks that would otherwise be prevented by proper site isolation implementation.
Mitigation strategies for CVE-2024-1671 primarily focus on updating to the patched version of Google Chrome 122.0.6261.57 or later, which addresses the underlying implementation issue in the site isolation mechanism. Organizations should prioritize immediate deployment of this update across all affected systems, particularly in enterprise environments where users may be exposed to untrusted web content. Additional defensive measures include implementing network-level controls to restrict access to potentially malicious sites, deploying web application firewalls that can detect and block suspicious HTML content, and maintaining comprehensive monitoring for unusual browser behavior that might indicate exploitation attempts. Security teams should also consider implementing browser hardening measures and ensuring that automatic update mechanisms are properly configured to maintain up-to-date protection levels. This vulnerability aligns with ATT&CK technique T1059.001 for command and scripting interpreter and CWE-284 for improper access control, highlighting the intersection of browser security implementation flaws with broader exploitation patterns.
The broader implications of this vulnerability underscore the critical importance of proper site isolation implementation in modern web browsers. This flaw demonstrates how even core security features can be undermined by implementation gaps, emphasizing the need for rigorous security testing and validation of browser security mechanisms. The vulnerability also highlights the ongoing challenge of maintaining secure browser architectures while providing the functionality users expect, as site isolation must balance security with performance and usability requirements. Organizations should recognize that browser-based security vulnerabilities like CVE-2024-1671 represent persistent risks that require continuous monitoring and proactive security management to prevent exploitation attempts that could compromise user data and system integrity.