CVE-2001-1458 in GroupWise
Summary
by MITRE
Directory traversal vulnerability in Novell GroupWise 5.5 and 6.0 allows remote attackers to read arbitrary files via a request for /servlet/webacc?User.html= that contains "../" (dot dot) sequences and a null character.
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Analysis
by VulDB Data Team • 09/25/2025
The vulnerability described in CVE-2001-1458 represents a classic directory traversal flaw that affected Novell GroupWise versions 5.5 and 6.0. This security weakness resides in the web server component of the GroupWise messaging platform, which was widely deployed in enterprise environments for email and collaboration services. The vulnerability specifically impacts the servlet-based web interface that handled user account management and access requests. Attackers could exploit this flaw by crafting malicious HTTP requests that included directory traversal sequences combined with null characters, allowing them to bypass normal file access restrictions and potentially gain unauthorized access to sensitive system files.
The technical mechanism behind this vulnerability stems from inadequate input validation within the web application's parameter handling. When the servlet processed requests containing the User.html parameter with "../" sequences followed by null characters, it failed to properly sanitize or validate the input before constructing file paths. This lack of proper input sanitization created a path traversal condition where the application would interpret the malicious input as a legitimate file path request, effectively allowing attackers to navigate the file system beyond the intended boundaries. The inclusion of null characters in the request served to terminate strings prematurely, potentially bypassing some basic validation checks that might otherwise detect the malicious path sequences. This flaw aligns with CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks.
The operational impact of this vulnerability was significant for organizations relying on GroupWise 5.5 and 6.0, as it could enable remote attackers to access confidential data including user credentials, system configuration files, and potentially sensitive business information. The vulnerability could be exploited without authentication, making it particularly dangerous as it allowed attackers to read arbitrary files from the server's file system. Depending on the server configuration and file permissions, successful exploitation could lead to information disclosure, system compromise, or even complete system infiltration. The attack vector was particularly concerning because it could be executed remotely over the network, requiring no physical access to the system and potentially allowing attackers to gather intelligence about the network infrastructure and user base.
Organizations affected by this vulnerability should have implemented immediate mitigations including applying available patches from Novell, implementing network segmentation to restrict access to the vulnerable web interface, and configuring proper input validation at the network level. The recommended approach involved disabling the vulnerable servlet functionality or implementing strict input filtering to prevent directory traversal sequences from being processed. Security teams should have conducted comprehensive vulnerability assessments to identify all systems running affected GroupWise versions and ensured proper access controls were in place. From an ATT&CK framework perspective, this vulnerability would be categorized under T1083 (File and Directory Discovery) and T1566 (Phishing) as attackers could use the information gathered to craft more targeted attacks. The incident highlighted the critical importance of input validation and proper access controls in web applications, particularly in enterprise messaging systems where unauthorized access to user data could have severe business and legal consequences. Organizations should have also considered implementing web application firewalls and intrusion detection systems to monitor for suspicious requests containing directory traversal patterns.