CVE-2023-28284 in Edge
Summary
by MITRE • 04/12/2023
Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
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Analysis
by VulDB Data Team • 03/01/2025
This vulnerability represents a critical security feature bypass in Microsoft Edge browser that operates at the core of web application security controls. The flaw resides within the browser's implementation of security mechanisms designed to prevent unauthorized access to sensitive resources and data. Specifically, the vulnerability allows attackers to circumvent intended security boundaries that should protect against cross-site scripting attacks and other web-based exploits. The issue manifests when the browser fails to properly enforce security policies that would normally restrict access to certain domains, protocols, or resource types. This bypass affects the browser's ability to maintain proper isolation between different web contexts and can potentially allow malicious actors to access or manipulate resources that should remain protected.
The technical implementation flaw stems from insufficient validation of security policies within Edge's rendering engine and security architecture. When processing web content, the browser does not adequately verify that certain security restrictions apply to specific resource access patterns or cross-origin operations. This weakness creates an attack surface where malicious websites can exploit the browser's trust model to gain access to restricted resources or execute unauthorized operations. The vulnerability particularly impacts the browser's handling of security boundaries between different origins, potentially allowing attackers to bypass content security policies and access resources that should be protected by same-origin policies. This type of flaw commonly relates to CWE-160 and CWE-162 categories which address issues in security policy enforcement and improper access control implementation.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass broader security implications for enterprise and individual users. Organizations relying on Microsoft Edge for web browsing and application access face potential exposure to data theft, unauthorized system access, and lateral movement within their network environments. Attackers could leverage this bypass to access sensitive corporate data, perform credential theft, or establish persistent access points through compromised browser sessions. The vulnerability affects both enterprise and consumer environments since Edge is widely deployed across various operating systems and configurations. Security teams must consider this weakness as a potential entry point for advanced persistent threats that could leverage the bypass to access protected web applications and services. The impact is particularly concerning given Edge's integration with Windows operating systems and its widespread use in corporate environments where it serves as the primary browser for accessing internal applications and services.
Mitigation strategies for this vulnerability should include immediate deployment of Microsoft security updates and patches to address the underlying implementation flaw. Organizations must ensure that all Edge installations are updated to the latest versions that contain the necessary security fixes. Network administrators should implement additional monitoring and detection measures to identify potential exploitation attempts through anomalous browser behavior or unusual cross-origin resource access patterns. Browser hardening techniques should be applied including disabling unnecessary browser features and implementing strict content security policies for web applications. Security teams should also consider implementing browser isolation technologies and enhanced web application firewalls to provide additional layers of protection. The vulnerability highlights the importance of maintaining up-to-date security controls and implementing defense-in-depth strategies that protect against multiple attack vectors. Regular security assessments and penetration testing should be conducted to identify similar implementation flaws in other browser components or web application frameworks. Organizations should also establish incident response procedures specifically designed to address browser-based security bypasses and ensure rapid remediation when such vulnerabilities are identified in their environments.