CVE-2000-1191 in htsearch
Summary
by MITRE
htsearch program in htDig 3.2 beta, 3.1.6, 3.1.5, and earlier allows remote attackers to determine the physical path of the server by requesting a non-existent configuration file using the config parameter, which generates an error message that includes the full path.
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Analysis
by VulDB Data Team • 10/11/2025
The vulnerability described in CVE-2000-1191 represents a classic information disclosure flaw affecting the htsearch program within the htDig search engine software suite. This issue manifests when attackers exploit the program's handling of invalid configuration parameters, specifically targeting the config parameter to trigger error responses that inadvertently reveal sensitive server path information. The vulnerability affects multiple versions of htDig including the 3.2 beta, 3.1.6, and 3.1.5 releases, indicating it was present across a significant portion of the software's development lifecycle and likely persisted due to inadequate error handling mechanisms.
The technical flaw stems from improper error message generation within the htsearch component, where the system fails to sanitize or mask path information when processing malformed requests. When an attacker submits a request containing a non-existent configuration file path through the config parameter, the system generates an error response that includes the complete physical path to the server filesystem. This occurs because the software does not implement proper input validation or error handling that would prevent path disclosure during error conditions. The vulnerability directly relates to CWE-209, which addresses the exposure of sensitive information through error messages, and demonstrates how seemingly benign error handling can create significant security implications.
The operational impact of this vulnerability extends beyond simple path disclosure, as it provides attackers with crucial information for subsequent exploitation attempts. Knowledge of the server's physical path structure enables attackers to craft more sophisticated attacks, including potential directory traversal exploits or targeted file access attempts. The vulnerability can be exploited remotely without authentication requirements, making it particularly dangerous in web-facing environments. Attackers can systematically probe the system to map out the server's directory structure, potentially identifying sensitive files or directories that might otherwise remain hidden. This information disclosure creates a foundation for further reconnaissance activities and can facilitate more advanced attack vectors such as local file inclusion or remote code execution if combined with other vulnerabilities.
Security mitigations for this vulnerability should focus on implementing proper error handling practices that prevent path information disclosure in error messages. System administrators should upgrade to patched versions of htDig where available, as the vulnerability was likely addressed in subsequent releases through improved error message sanitization. Input validation mechanisms should be strengthened to ensure that all parameter values are properly validated before processing, with error responses generated without exposing internal system paths. Additionally, organizations should implement comprehensive logging and monitoring to detect unusual patterns of configuration parameter requests that might indicate exploitation attempts. The ATT&CK framework categorizes this type of vulnerability under T1083 - File and Directory Discovery, as it enables attackers to gather information about the target system's file structure, which is a fundamental step in the reconnaissance phase of cyber attacks. Regular security assessments and penetration testing should include verification of error handling mechanisms to ensure that sensitive system information is not exposed through error responses.