CVE-2004-2104 in NetWare
Summary
by MITRE
Novell NetWare Enterprise Web Server 5.1 and 6.0 allows remote attackers to obtain sensitive server information, including the internal IP address, via a direct request to (1) snoop.jsp, (2) SnoopServlet, (3) env.bas, or (4) lcgitest.nlm.
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Analysis
by VulDB Data Team • 07/06/2025
The vulnerability identified as CVE-2004-2104 represents a critical information disclosure flaw in Novell NetWare Enterprise Web Server versions 5.1 and 6.0. This security weakness stems from the improper handling of specific servlet and script requests that expose internal server configurations and network details to remote attackers without adequate authentication or access controls. The affected components include snoop.jsp, SnoopServlet, env.bas, and lcgitest.nlm which are designed to provide diagnostic information but fail to implement proper security measures to prevent unauthorized access to sensitive system data.
The technical implementation of this vulnerability involves the web server's failure to validate incoming requests to diagnostic endpoints, allowing any remote attacker to directly access these sensitive resources through simple HTTP requests. When an attacker accesses these specific URLs, the server responds with detailed information about the internal network configuration including the server's internal IP address, which constitutes a significant breach of network confidentiality. This type of information disclosure vulnerability falls under the CWE-200 category of "Information Exposure" and represents a classic case of insufficient access control mechanisms.
The operational impact of this vulnerability extends beyond simple information gathering as the disclosure of internal IP addresses provides attackers with crucial network topology information that can facilitate subsequent attacks. An attacker who obtains the internal IP address can use this information to map internal network structures, identify potential targets for further reconnaissance, and plan more sophisticated attacks such as internal network scanning or targeted exploitation of other vulnerable systems within the same network segment. This vulnerability particularly affects enterprise environments where internal network addresses are not properly segmented or protected from external access, creating a pathway for attackers to gain deeper insights into the organization's network infrastructure.
The implications of this vulnerability align with ATT&CK technique T1083 (File and Directory Discovery) and T1046 (Network Service Scanning) as attackers can use the disclosed information to perform more targeted reconnaissance activities. Organizations running these older NetWare web server versions face significant risk as the disclosed information can be leveraged to bypass network security controls and conduct more effective attacks against internal systems. The vulnerability demonstrates the importance of proper input validation and access control implementation in web applications, particularly for diagnostic and monitoring interfaces that should typically be restricted to authorized administrators only.
Mitigation strategies for CVE-2004-2104 should include immediate implementation of access controls to restrict access to diagnostic endpoints, disabling or removing the vulnerable servlets and scripts from production environments, and implementing proper authentication mechanisms for any remaining diagnostic functionality. Network segmentation and firewall rules should be configured to prevent external access to internal server information, while organizations should consider upgrading to supported web server versions that properly address these security concerns. Additionally, regular security assessments should be conducted to identify and remediate similar information disclosure vulnerabilities in other web applications and server configurations, as this type of vulnerability remains common in legacy systems and can provide attackers with valuable reconnaissance information for subsequent exploitation attempts.