CVE-1999-1006 in GroupWise
Summary
by MITRE
Groupwise web server GWWEB.EXE allows remote attackers to determine the real path of the web server via the HELP parameter.
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Analysis
by VulDB Data Team • 10/21/2025
The vulnerability described in CVE-1999-1006 affects the Groupwise web server implementation through the GWWEB.EXE component, which exposes sensitive path information to remote attackers through improper handling of the HELP parameter. This represents a classic information disclosure vulnerability that can provide adversaries with critical system reconnaissance data. The flaw exists in the web server's response mechanism when processing help requests, where the system inadvertently reveals the actual file system paths used by the Groupwise web server implementation.
This vulnerability operates at the application layer and falls under the category of information disclosure as defined by CWE-200, where sensitive information is exposed to unauthorized parties. The technical implementation flaw occurs when the web server processes the HELP parameter without proper input sanitization or path validation, allowing attackers to construct malicious requests that trigger the server to return directory structures or file paths. The vulnerability is particularly concerning because it provides attackers with the real path of the web server installation, which can be used for further exploitation attempts such as directory traversal attacks or targeted file access.
The operational impact of this vulnerability extends beyond simple information disclosure, as it enables attackers to map the underlying file system structure of the Groupwise web server. This reconnaissance capability significantly reduces the attack surface for subsequent exploitation attempts, as adversaries can now craft more precise attacks targeting specific files or directories. The vulnerability affects systems running older versions of Novell Groupwise web server components, where proper input validation was not implemented for help request processing. This type of information disclosure can be leveraged by attackers to bypass security controls and identify potential targets for further exploitation, making it a critical concern for organizations that have not updated their Groupwise implementations.
The attack vector for this vulnerability is straightforward, requiring only a remote connection to the affected web server and the ability to send specially crafted HTTP requests containing the HELP parameter. According to ATT&CK framework, this vulnerability maps to T1083 (File and Directory Discovery) and T1592 (Gather Victim Host Information) as attackers can systematically enumerate system paths and directories through repeated requests. Organizations should implement proper input validation and sanitization for all parameters, particularly those used in help or documentation systems, to prevent such information leakage. The recommended mitigation includes updating to patched versions of Groupwise web server software, implementing proper parameter validation, and restricting access to help functions through firewall rules or authentication mechanisms. Additionally, network segmentation and monitoring of unusual help request patterns can help detect potential exploitation attempts. The vulnerability demonstrates the importance of secure coding practices and proper input handling in web server implementations, as even seemingly benign help functions can become attack vectors when not properly secured against malicious input.