CVE-2002-2269 in Webster Http Server
Summary
by MITRE
Directory traversal vulnerability in Webster HTTP Server allows remote attackers to read arbitrary files via a .. (dot dot) in the URL.
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Analysis
by VulDB Data Team • 08/29/2025
The CVE-2002-2269 vulnerability represents a classic directory traversal flaw that affected the Webster HTTP Server, a web server implementation that was widely used in the early 2000s. This vulnerability stems from inadequate input validation mechanisms within the server's URL processing logic, allowing malicious actors to exploit the system's file access controls through simple manipulation of URL paths. The flaw specifically manifests when the server fails to properly sanitize or normalize URL paths that contain directory traversal sequences such as .. or %2e%2e, which are standard encoded representations of directory navigation commands. When these sequences are processed without proper validation, they enable attackers to navigate outside the intended web root directory and access files that should remain restricted.
The technical exploitation of this vulnerability follows a well-established pattern that aligns with common attack vectors documented in the MITRE ATT&CK framework under the technique of path traversal. Attackers can construct malicious URLs that include double dots followed by directory separators, such as /../../../etc/passwd or similar constructs targeting sensitive system files. The vulnerability's impact is particularly severe because it operates at the application layer, bypassing traditional network security controls and potentially providing unauthorized access to critical system resources including configuration files, user credentials, system logs, and other sensitive data. This type of vulnerability is classified as a CWE-22 weakness under the Common Weakness Enumeration system, specifically categorized as "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')" which represents one of the most persistent and dangerous classes of web application vulnerabilities.
The operational impact of CVE-2002-2269 extends beyond simple data theft, as successful exploitation can lead to complete system compromise and unauthorized access to sensitive information. Organizations running affected Webster HTTP Server implementations faced significant risks including potential data breaches, system infiltration, and unauthorized modification of web content. The vulnerability's remote nature means that attackers do not require physical access to the system or local network privileges, making it particularly dangerous for publicly accessible web servers. Additionally, the widespread use of the Webster HTTP Server in enterprise environments meant that a single exploited vulnerability could potentially affect multiple systems within an organization, creating cascading security failures.
Mitigation strategies for CVE-2002-2269 require immediate implementation of proper input validation and path normalization within the web server's URL processing pipeline. Organizations should implement strict path validation that rejects or removes directory traversal sequences from incoming requests before they are processed. The most effective remediation involves configuring the web server to normalize all incoming paths and ensure that file access operations occur only within designated directories, effectively implementing a whitelist approach to file access. Security measures should include disabling unnecessary file access capabilities, implementing proper access controls, and regularly updating server software to patch known vulnerabilities. The vulnerability also highlights the importance of following secure coding practices that align with industry standards and recommendations from organizations such as the Open Web Application Security Project, which emphasize the need for proper input validation and output encoding in web applications. Regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other applications and systems within the organization's infrastructure.