CVE-2002-1310 in JRun
Summary
by MITRE
Heap-based buffer overflow in the error-handling mechanism for the IIS ISAPI handler in Macromedia JRun 4.0 and earlier allows remote attackers to execute arbitrary via an HTTP GET request with a long .jsp file name.
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Analysis
by VulDB Data Team • 09/06/2025
The vulnerability described in CVE-2002-1310 represents a critical heap-based buffer overflow within the Internet Information Services ISAPI handler component of Macromedia JRun 4.0 and earlier versions. This flaw exists in the error-handling mechanism that processes HTTP GET requests containing excessively long .jsp file names, creating a pathway for remote code execution attacks. The vulnerability specifically targets the memory management practices within the ISAPI extension that handles Java Server Pages requests, where improper bounds checking allows attackers to overwrite adjacent memory locations in the heap.
The technical exploitation of this vulnerability occurs when an attacker submits an HTTP GET request containing a maliciously crafted .jsp file name that exceeds the allocated buffer size within the ISAPI handler's error processing routine. This buffer overflow condition arises from insufficient input validation and memory boundary checks in the JRun server's handling of file path components. The heap-based nature of the overflow means that memory corruption affects the program's heap memory structure, potentially allowing attackers to overwrite function pointers, return addresses, or other critical program state information. This type of vulnerability falls under the CWE-121 heap-based buffer overflow category, which is classified as a memory safety error that can lead to arbitrary code execution when properly exploited.
The operational impact of this vulnerability extends beyond simple denial of service scenarios to encompass full system compromise capabilities. Remote attackers can leverage this vulnerability to execute arbitrary code with the privileges of the web server process, which typically runs with elevated permissions on the host system. Successful exploitation could result in complete system takeover, data exfiltration, or deployment of persistent backdoors. The vulnerability affects organizations running Macromedia JRun 4.0 or earlier versions on Windows servers hosting web applications, particularly those utilizing JSP technology. This attack vector aligns with ATT&CK technique T1190 for exploiting vulnerabilities in web applications and T1059 for command and control through compromised web servers.
Mitigation strategies for this vulnerability require immediate action including the application of vendor patches or updates to Macromedia JRun 4.1 or later versions where the heap overflow has been addressed. Organizations should implement network-based protections such as web application firewalls that can detect and block overly long URL components in HTTP requests. Input validation measures should be deployed at multiple layers including perimeter firewalls, application firewalls, and within the application itself to sanitize file name parameters before they reach the vulnerable ISAPI handler. Additionally, system hardening practices including privilege separation, disabling unnecessary services, and implementing proper access controls should be enforced to limit the potential impact of successful exploitation attempts. Security monitoring should include detection of unusual HTTP GET requests with extended file paths that may indicate attempts to exploit this vulnerability. The vulnerability demonstrates the importance of proper memory management in server-side components and highlights the necessity of regular security updates and vulnerability assessments for web application servers.