CVE-2003-1173 in Firstclass
Summary
by MITRE
Centrinity FirstClass 7.1 allows remote attackers to access sensitive information by appending search to the end of the URL and checking all of the search option checkboxes and leaving the text field blank, which will return all files in the searched directory.
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Analysis
by VulDB Data Team • 12/21/2024
The vulnerability described in CVE-2003-1173 affects Centrinity FirstClass 7.1, a collaborative software platform that provides email, calendaring, and file sharing capabilities. This issue represents a classic directory traversal and information disclosure flaw that allows unauthorized remote access to sensitive data within the system's file structure. The vulnerability specifically manifests when users append the string "search" to the URL path and manipulate the search parameters to retrieve complete directory listings without proper authentication or authorization checks.
The technical implementation of this vulnerability exploits a lack of proper input validation and access control mechanisms within the application's search functionality. When an attacker constructs a malicious URL with the search parameter and leaves the text field blank while checking all search option checkboxes, the system fails to properly restrict access to files and directories. This flaw essentially bypasses the intended security boundaries and allows enumeration of all files within the targeted directory structure, potentially exposing sensitive documents, configuration files, or other confidential data that should remain protected from unauthorized access.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with comprehensive directory listings that can serve as a foundation for further exploitation. Security researchers have classified similar vulnerabilities under CWE-22 for Improper Limiting of a Pathname to a Restricted Directory, and under CWE-552 for Files or Directories Accessible to External Parties. This weakness directly enables attackers to map the application's file structure and identify potentially sensitive files that may contain credentials, source code, or other valuable information. The vulnerability also aligns with ATT&CK technique T1083 (File and Directory Discovery) as it allows adversaries to enumerate system resources and identify potential targets for additional attacks.
Mitigation strategies for this vulnerability should focus on implementing proper access controls and input validation mechanisms. Organizations should ensure that all search functionality properly validates user input and enforces authentication requirements before returning directory listings. The solution involves implementing robust access control lists that prevent unauthorized users from accessing files outside their designated permissions, combined with proper input sanitization that prevents parameter manipulation. Additionally, security hardening measures should include disabling unnecessary search functionality, implementing rate limiting for search operations, and conducting regular security audits to identify similar path traversal vulnerabilities. Network segmentation and firewall rules can also provide additional layers of protection by restricting direct access to potentially vulnerable application endpoints, while regular security updates and patches should be implemented to address known vulnerabilities in legacy software systems.