CVE-2001-0389 in WebSphere Application Server
Summary
by MITRE
IBM Websphere/NetCommerce3 3.1.2 allows remote attackers to determine the real path of the server by directly calling the macro.d2w macro with a NOEXISTINGHTMLBLOCK argument.
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Analysis
by VulDB Data Team • 10/06/2025
This vulnerability exists in IBM WebSphere/NetCommerce 3.1.2 where a remote attacker can exploit a path disclosure flaw by directly invoking the macro.d2w macro with a NOEXISTINGHTMLBLOCK argument. The vulnerability stems from insufficient input validation and error handling within the web application framework, allowing malicious users to extract sensitive server path information through crafted HTTP requests. When the system processes this specific macro invocation with the designated argument, it inadvertently reveals the actual file system location where the application is deployed, providing attackers with critical information for subsequent exploitation attempts.
The technical implementation of this vulnerability involves the web application's failure to properly sanitize or validate macro parameters before processing them. The macro.d2w component, which is designed to handle dynamic content generation, does not adequately filter the NOEXISTINGHTMLBLOCK argument, causing the system to return detailed error messages or path information in its response. This occurs because the application's error handling mechanism lacks proper sanitization of user-supplied parameters, creating a path disclosure condition that violates security best practices for input validation. The flaw represents a classic example of insufficient error handling and input sanitization that can be categorized under CWE-20, which addresses improper input validation, and CWE-200, which covers exposure of sensitive information.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with the foundational knowledge required for more sophisticated attacks. Once the real server path is discovered, threat actors can craft targeted attacks against specific file locations, potentially leading to directory traversal, arbitrary file access, or further exploitation of other vulnerabilities present in the application stack. The disclosure of server paths can enable attackers to bypass security controls, understand the application's architecture, and plan more effective attack vectors. This vulnerability particularly affects web applications that do not properly implement security measures to prevent information leakage, making it a significant concern for organizations running legacy web commerce platforms.
Organizations should implement immediate mitigations including input validation controls to sanitize all macro parameters, proper error handling to prevent path disclosure in error messages, and network-level restrictions to limit access to potentially vulnerable endpoints. The implementation of web application firewalls and security monitoring systems can help detect and block malicious requests attempting to exploit this vulnerability. Additionally, organizations should consider upgrading to supported versions of IBM WebSphere/NetCommerce that address this vulnerability, as the affected version is no longer maintained and lacks security updates. The remediation process should include thorough security testing to ensure that error messages no longer reveal sensitive path information and that all user-supplied inputs are properly validated before processing. This vulnerability also highlights the importance of following the principle of least privilege and implementing proper access controls to limit the exposure of sensitive system information through web interfaces.