CVE-2006-3091 in PhpMyFactures
Summary
by MITRE
PhpMyFactures 1.0, and possibly 1.2 and earlier, allows remote attackers to obtain the installation path via a direct request to (1) /verif.php, (2) /inc/footer.php, and (3) /remises/ajouter_remise.php.
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Analysis
by VulDB Data Team • 07/29/2018
The vulnerability described in CVE-2006-3091 represents a critical information disclosure flaw affecting PhpMyFactures version 1.0 and potentially 1.2 and earlier versions. This vulnerability exposes sensitive system information through direct access to specific script files within the application's directory structure. The affected files include /verif.php, /inc/footer.php, and /remises/ajouter_remise.php which when accessed directly by remote attackers can reveal the complete installation path of the web application. This type of information disclosure vulnerability falls under the category of CWE-200 - Information Exposure, where sensitive system details are inadvertently exposed to unauthorized parties. The flaw demonstrates a lack of proper access control mechanisms and input validation within the application's file access patterns.
The technical exploitation of this vulnerability occurs through straightforward HTTP requests to the identified PHP files without proper authentication or authorization checks. When attackers access these specific endpoints directly, the web server returns the full server path where PhpMyFactures is installed, potentially including sensitive directory structures and file locations. This exposure creates a significant risk as it provides attackers with detailed knowledge of the application's deployment environment. The vulnerability is particularly concerning because it allows remote attackers to gather system information without requiring any special privileges or credentials, making it easily exploitable from any location with network access to the target server. According to ATT&CK framework, this represents a technique categorized under T1083 - File and Directory Discovery, where adversaries gather information about file systems and directory structures.
The operational impact of this vulnerability extends beyond simple path disclosure, as it provides attackers with crucial information that can be leveraged for further exploitation attempts. Knowledge of the installation path enables attackers to craft more targeted attacks, potentially identifying other vulnerabilities through path-based reconnaissance or planning directory traversal attacks. The exposed paths may reveal underlying system architecture, directory permissions, and application deployment patterns that could aid in privilege escalation or other advanced attack vectors. Additionally, this information disclosure can be combined with other vulnerabilities to create more effective exploitation chains, as attackers can use the path information to bypass certain security controls or to determine the appropriate attack methodology. The vulnerability essentially acts as a reconnaissance tool that reduces the attack surface complexity for threat actors.
Mitigation strategies for this vulnerability should focus on implementing proper access controls and input validation mechanisms within the application. The most effective immediate solution involves configuring web server permissions to prevent direct access to sensitive PHP files while ensuring that the application's legitimate access patterns remain functional. Web server configuration changes should restrict access to the identified vulnerable files through .htaccess rules or similar access control mechanisms. Additionally, the application code should be modified to include proper authentication checks before serving content from these files, ensuring that only authorized users or processes can access them. Organizations should also implement comprehensive application firewalls and web application security controls to detect and prevent unauthorized direct access attempts to sensitive application components. Regular security audits and penetration testing should be conducted to identify similar information disclosure vulnerabilities within the application's codebase, as this represents a common pattern that may exist in other parts of the system architecture.