CVE-2002-0190 in Internet Explorer
Summary
by MITRE
Microsoft Internet Explorer 5.01, 5.5 and 6.0 allows remote attackers to execute arbitrary code under fewer security restrictions via a malformed web page that requires NetBIOS connectivity, aka "Zone Spoofing through Malformed Web Page" vulnerability.
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Analysis
by VulDB Data Team • 12/30/2024
The CVE-2002-0190 vulnerability represents a significant security flaw in Microsoft Internet Explorer versions 5.01, 5.5, and 6.0 that enables remote code execution under reduced security restrictions. This vulnerability specifically exploits the browser's handling of malformed web pages that require NetBIOS connectivity to function properly. The issue stems from how Internet Explorer processes certain web content when it attempts to establish network connections through the NetBIOS protocol, creating a pathway for malicious actors to bypass security mechanisms that normally protect users from potentially harmful content.
The technical flaw manifests when Internet Explorer encounters a specially crafted web page that contains malformed content designed to exploit the browser's NetBIOS resolution process. This vulnerability operates at the intersection of web browser security and network protocol handling, where the browser's attempt to resolve network names through NetBIOS creates an execution context that allows attackers to inject and execute arbitrary code on the target system. The flaw leverages the trust relationship between the browser and network services, enabling attackers to manipulate the security zones that normally separate trusted and untrusted content sources.
The operational impact of this vulnerability extends beyond simple code execution to encompass a complete compromise of the affected system's security posture. When exploited successfully, the vulnerability allows attackers to execute malicious code with the privileges of the user running the browser, potentially leading to full system compromise. The requirement for NetBIOS connectivity means that the attack vector is particularly concerning in networked environments where such services are available, as it can be triggered through standard web browsing activities without requiring special network conditions or complex attack scenarios.
This vulnerability aligns with CWE-264, which describes permissions, privileges, and access control issues in software applications, and demonstrates how improper handling of network protocols can create security weaknesses in web browsers. The attack pattern follows the MITRE ATT&CK framework's technique T1059 for command and scripting interpreter, specifically targeting the execution of malicious code through browser-based attacks. Organizations affected by this vulnerability face significant risk as the attack can be delivered through standard web browsing activities, making it particularly dangerous in enterprise environments where users frequently access external websites.
Mitigation strategies for CVE-2002-0190 should focus on both immediate defensive measures and long-term architectural improvements. Microsoft released patches addressing this vulnerability through security updates that modified how Internet Explorer handles malformed web pages and NetBIOS connectivity requirements. Organizations should implement network segmentation to limit access to NetBIOS services where possible, disable unnecessary network protocols in browser configurations, and deploy web application firewalls to filter suspicious content. Additionally, user education regarding safe browsing practices and the importance of keeping software updated remains crucial in defending against this class of vulnerability that exploits browser security mechanisms through network protocol interactions.