CVE-2010-3342 in Internet Explorer
Summary
by MITRE
Microsoft Internet Explorer 6, 7, and 8 does not prevent rendering of cached content as HTML, which allows remote attackers to access content from a different (1) domain or (2) zone via unspecified script code, aka "Cross-Domain Information Disclosure Vulnerability," a different vulnerability than CVE-2010-3348.
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Analysis
by VulDB Data Team • 03/31/2025
The vulnerability identified as CVE-2010-3342 represents a critical cross-domain information disclosure flaw in Microsoft Internet Explorer versions 6, 7, and 8. This vulnerability stems from the browser's improper handling of cached content rendering mechanisms, specifically when content from different domains or security zones is processed. The flaw allows remote attackers to exploit the browser's caching behavior to access sensitive information that should remain isolated between different security contexts. This issue is particularly concerning because it operates at the core of web browser security architecture, where domain isolation and zone separation are fundamental security principles that prevent unauthorized data access between different trust boundaries.
The technical implementation of this vulnerability involves the browser's failure to properly enforce cross-domain security policies when rendering cached content. When Internet Explorer processes cached resources, it does not adequately validate whether the content originated from the same domain or security zone as the current page context. This allows attackers to craft malicious script code that can manipulate the browser's caching system to retrieve and display content from different domains or security zones. The vulnerability specifically affects how the browser handles HTML rendering of cached data, creating a pathway for attackers to bypass standard security restrictions that normally prevent such cross-domain access. This behavior aligns with CWE-200, which describes improper information disclosure vulnerabilities where sensitive data is exposed due to inadequate access controls or validation mechanisms.
The operational impact of CVE-2010-3342 extends beyond simple information disclosure, as it represents a fundamental breakdown in the browser's security model that could enable more sophisticated attacks. Attackers can leverage this vulnerability to access sensitive data that might include authentication tokens, session information, or other confidential content from different domains. The vulnerability's persistence across multiple Internet Explorer versions means that a significant portion of the web user base remained at risk, particularly in enterprise environments where older browser versions were commonly deployed. This type of vulnerability directly conflicts with the principle of least privilege and domain isolation that forms the foundation of secure web browsing. The attack vector operates through unspecified script code execution, which suggests that the exploitation could occur through various methods including malicious websites, phishing campaigns, or compromised web applications that interact with vulnerable browsers.
Mitigation strategies for CVE-2010-3342 primarily focus on immediate browser updates and security configuration adjustments. Microsoft released patches addressing this vulnerability as part of their regular security updates, but organizations must ensure comprehensive deployment across all affected systems. Browser security policies should be enhanced to include stricter caching controls and cross-domain validation mechanisms. Network administrators should implement additional monitoring and intrusion detection systems to identify potential exploitation attempts. The vulnerability demonstrates the importance of proper cache management and content validation in web browsers, aligning with ATT&CK technique T1059 for execution through scripting and T1566 for initial access via social engineering. Organizations should also consider implementing web application firewalls and content security policies to add additional layers of protection against cross-domain information leakage attacks. Regular security assessments and penetration testing should include evaluation of browser caching behaviors and cross-domain access controls to identify similar vulnerabilities in other components of the web infrastructure.