CVE-2002-0228 in MSN Messenger
Summary
by MITRE
Microsoft MSN Messenger allows remote attackers to use Javascript that references an ActiveX object to obtain sensitive information such as display names and web site navigation, and possibly more when the user is connected to certain Microsoft sites (or DNS-spoofed sites).
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Analysis
by VulDB Data Team • 06/27/2021
The vulnerability identified as CVE-2002-0228 represents a significant security flaw in Microsoft MSN Messenger that exploited the interaction between JavaScript execution and ActiveX controls within the messaging application. This vulnerability emerged during a period when instant messaging platforms were rapidly evolving and integrating web-based functionalities, creating new attack surfaces that adversaries could leverage to compromise user privacy and system integrity. The flaw specifically targeted the way MSN Messenger handled JavaScript code that referenced ActiveX objects, which were designed to provide enhanced functionality but inadvertently created opportunities for malicious code execution.
The technical mechanism behind this vulnerability stems from the improper validation of ActiveX object references within JavaScript code executed by MSN Messenger. When users connected to certain Microsoft sites or DNS-spoofed sites, the application would process JavaScript code that contained references to ActiveX controls. These ActiveX objects, when properly instantiated and executed, could potentially expose sensitive user information including display names and browsing history. The vulnerability was particularly concerning because it allowed attackers to craft malicious JavaScript payloads that would execute within the context of the MSN Messenger application, leveraging the trust relationship between the application and the ActiveX components it was designed to interact with.
The operational impact of CVE-2002-0228 extended beyond simple information disclosure, as it provided attackers with the capability to gather comprehensive user behavioral data and potentially establish persistent monitoring capabilities. Attackers could exploit this vulnerability to track user navigation patterns across Microsoft sites, collect display names and other personal information, and potentially use this intelligence for social engineering attacks or identity theft. The vulnerability was particularly dangerous in environments where users had elevated privileges or where the messenger application was used for business communications, as it could lead to corporate data leakage and intellectual property theft. The DNS-spoofing aspect of the attack vector meant that even users connecting to legitimate Microsoft services could be compromised if their DNS queries were manipulated to redirect them to malicious sites.
This vulnerability aligns with CWE-200, which addresses "Information Exposure," and demonstrates how improper handling of object references can lead to unintended information disclosure. From an ATT&CK framework perspective, this vulnerability maps to techniques involving credential access and information gathering, specifically T1081 for credential dumping and T1005 for data from local system. The attack pattern reflects the broader category of cross-site scripting vulnerabilities that were prevalent in web-based applications of that era, though this particular case involved the unique integration of JavaScript and ActiveX components within a desktop messaging application. The vulnerability also illustrates the dangers of insufficient input validation and the risks associated with trusting external content without proper sanitization, particularly when that content involves components that can interact with the underlying operating system.
Mitigation strategies for CVE-2002-0228 required immediate action from Microsoft and system administrators, including the release of security patches that addressed the ActiveX object reference handling within MSN Messenger. Users needed to disable JavaScript execution within the messenger application or avoid connecting to untrusted sites that might host malicious JavaScript payloads. Network administrators should have implemented DNS filtering and monitoring to detect suspicious DNS resolution patterns that might indicate attempts to exploit this vulnerability. The incident highlighted the importance of comprehensive security testing for applications that integrate web technologies with desktop components, and it underscored the need for robust input validation and privilege separation mechanisms. Organizations should have updated their security policies to address the risks associated with ActiveX controls and JavaScript execution in messaging applications, while also implementing network monitoring to detect and prevent exploitation attempts.