CVE-2008-7178 in Uploader
Summary
by MITRE
Directory traversal vulnerability in Uploader module 1.1 for XOOPS allows remote attackers to read arbitrary files via a .. (dot dot) in the filename parameter in a downloadfile action to index.php.
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Analysis
by VulDB Data Team • 10/27/2024
The vulnerability described in CVE-2008-7178 represents a critical directory traversal flaw within the Uploader module version 1.1 of the XOOPS content management system. This weakness exists in the file handling mechanism where the application fails to properly validate or sanitize user input before processing file operations. The vulnerability specifically manifests when the downloadfile action in index.php receives a filename parameter containing directory traversal sequences such as .. which allows attackers to navigate outside the intended directory structure and access arbitrary files on the server filesystem. This type of vulnerability falls under the common weakness enumeration CWE-22, which categorizes directory traversal attacks as a fundamental security flaw in input validation and file access controls. The vulnerability is particularly dangerous because it enables attackers to potentially read sensitive files including configuration files, database credentials, or other system files that should remain protected from unauthorized access.
The operational impact of this vulnerability extends beyond simple file reading capabilities, as it provides attackers with the ability to access the underlying file system of the XOOPS installation. Remote attackers can exploit this weakness to retrieve sensitive information that may include database connection strings, administrator credentials, or other confidential data stored in configuration files. The attack vector is straightforward and requires minimal technical expertise, making it a popular target for automated exploitation tools. This vulnerability directly impacts the confidentiality and integrity of the system, as unauthorized access to system files can lead to complete system compromise. The weakness is particularly concerning in web applications that store sensitive data in predictable locations or that do not properly implement access controls for file operations. The attack can be executed through simple HTTP requests that manipulate the filename parameter, making it accessible to attackers with basic web exploitation knowledge.
Mitigation strategies for CVE-2008-7178 must focus on implementing proper input validation and sanitization mechanisms within the Uploader module. The most effective approach involves implementing strict validation of all file paths and rejecting any input containing directory traversal sequences or special characters that could enable path manipulation. Organizations should implement proper access controls that restrict file operations to specific directories and ensure that all user-supplied input undergoes rigorous sanitization before being processed. The solution should include implementing a whitelist approach for file operations, where only explicitly allowed files can be accessed through the download functionality. Additionally, the system should enforce proper file access controls that prevent access to sensitive system files regardless of the input provided. Security measures should also include regular security updates and patches for the XOOPS platform, as this vulnerability was present in version 1.1 and likely addressed in subsequent releases. System administrators should implement monitoring solutions to detect unusual file access patterns that may indicate exploitation attempts, and should conduct regular security assessments to identify similar vulnerabilities in other components of the web application stack. This vulnerability demonstrates the importance of following secure coding practices and implementing proper input validation as outlined in the OWASP Top Ten and other industry security standards, which emphasize the need for robust sanitization of all user inputs to prevent path traversal attacks.