CVE-2007-5811 in phpMyConferences
Summary
by MITRE
** DISPUTED ** Directory traversal vulnerability in PageTraiteDownload.php in phpMyConferences 8.0.2 and earlier allows remote attackers to read arbitrary files via a .. (dot dot) in the dir parameter. NOTE: this issue is disputed for 8.0.2 by a reliable third party, who notes that the PHP code is syntactically incorrect and cannot be executed.
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Analysis
by VulDB Data Team • 10/10/2024
The vulnerability described in CVE-2007-5811 represents a directory traversal flaw that was reportedly present in the PageTraiteDownload.php component of phpMyConferences version 8.0.2 and earlier. This type of vulnerability falls under the category of insecure direct object references and directory traversal attacks that have been consistently documented in cybersecurity literature as critical security weaknesses. The issue allows remote attackers to access arbitrary files on the server by manipulating the dir parameter through directory traversal sequences using the .. (dot dot) notation. Such vulnerabilities are particularly dangerous because they can potentially expose sensitive system files, configuration data, and other confidential information that should remain protected from unauthorized access.
From a technical perspective, the vulnerability stems from inadequate input validation and sanitization within the PageTraiteDownload.php script. When the application processes the dir parameter without proper restrictions on directory traversal sequences, it becomes susceptible to manipulation by attackers who can navigate through the file system hierarchy to access files outside the intended directory structure. This flaw aligns with CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal vulnerabilities. The attack vector relies on the exploitation of weak input validation mechanisms that fail to properly sanitize user-supplied data before using it in file system operations.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can potentially enable attackers to access critical system files, configuration databases, and other sensitive resources that may contain authentication credentials, database connection strings, or other confidential data. In the context of web applications, directory traversal vulnerabilities can serve as a stepping stone for more sophisticated attacks including privilege escalation, system compromise, and data exfiltration. The vulnerability demonstrates a fundamental weakness in the application's security architecture where user input directly influences file system operations without adequate validation or sanitization measures.
However, it is important to note that this vulnerability has been disputed by a reliable third party who specifically identified that the PHP code in question contains syntactic errors that prevent it from being executed. This dispute highlights the complexity of vulnerability assessment and the importance of thorough code analysis before classifying security issues. The disputed nature of the vulnerability raises questions about the actual exploitability of the reported flaw, as syntactically incorrect code cannot function as intended. This situation underscores the need for comprehensive verification of vulnerability reports and emphasizes the distinction between theoretical attack vectors and practical exploitability. Organizations should approach such disputed vulnerabilities with caution, conducting thorough code reviews and testing to determine actual risk exposure.
Security practitioners should consider implementing input validation controls and proper access controls to prevent unauthorized file system access regardless of whether this specific vulnerability proves exploitable. The incident also demonstrates the importance of maintaining up-to-date security practices and the need for comprehensive code reviews to identify potential security flaws before they can be exploited. Organizations using phpMyConferences or similar applications should ensure they are running patched versions and implement additional security controls such as web application firewalls, proper input sanitization, and regular security assessments to protect against similar vulnerabilities. The vulnerability serves as a reminder that even seemingly minor input validation issues can have significant security implications when they allow for unauthorized access to system resources.