CVE-2006-2248 in Xeneo Web Server
Summary
by MITRE
Xeneo Web Server 2.2.22.0 allows remote attackers to obtain the source code of script files via crafted requests containing dot, space, and slash characters in the file extension.
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Analysis
by VulDB Data Team • 09/06/2017
The vulnerability identified as CVE-2006-2248 affects the Xeneo Web Server version 2.2.22.0 and represents a critical path traversal flaw that enables remote attackers to access sensitive script source code files. This vulnerability stems from inadequate input validation within the web server's file handling mechanism, specifically when processing requests containing specially crafted file extensions with dot, space, and slash characters. The flaw allows adversaries to bypass normal access controls and retrieve the underlying source code of server-side scripts, which could contain sensitive business logic, database credentials, or other confidential information.
The technical implementation of this vulnerability exploits the server's failure to properly sanitize file path requests, creating a directory traversal condition that permits access to files outside the intended web root directory. When attackers submit requests containing sequences of dots, spaces, and slashes in the file extension portion of their requests, the web server incorrectly interprets these inputs and resolves them to absolute paths that can access restricted directories. This behavior aligns with common path traversal vulnerabilities classified under CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory. The vulnerability demonstrates a fundamental flaw in input sanitization and path resolution logic that allows attackers to manipulate the server's file access behavior.
The operational impact of this vulnerability is severe as it provides attackers with direct access to server-side script source code, potentially exposing sensitive information such as database connection strings, application logic, and business-critical algorithms. The retrieved source code could reveal implementation details that aid in subsequent attacks, including exploitation of additional vulnerabilities within the application. Furthermore, the disclosure of source code can lead to intellectual property theft, compliance violations, and significant reputational damage for organizations. This vulnerability particularly affects web applications that rely on server-side scripting languages where source code disclosure could expose authentication mechanisms, data processing routines, and other sensitive components. The attack vector requires only remote access to the web server, making it particularly dangerous as it can be exploited from any location without requiring physical access or prior authentication.
Organizations should implement immediate mitigations including updating to a patched version of the Xeneo Web Server, implementing proper input validation and sanitization for all file path requests, and configuring the web server to reject requests containing suspicious path traversal sequences. Network-level protections such as web application firewalls can help detect and block malicious requests containing the characteristic dot, space, and slash patterns. Additionally, implementing strict file access controls and ensuring that sensitive source code is not directly accessible through the web root directory provides layered defense against this type of attack. The vulnerability also highlights the importance of following secure coding practices and adhering to standards such as those defined in the OWASP Top Ten project, which specifically addresses path traversal vulnerabilities as critical security risks. Organizations should conduct comprehensive security assessments to identify similar vulnerabilities in other web applications and server configurations, as this type of flaw commonly appears in legacy systems that lack proper security hardening. The remediation process should include thorough testing to ensure that the implemented fixes do not introduce new functionality issues while effectively blocking the path traversal attack vectors.