CVE-2006-7112 in Mdpro
Summary
by MITRE
Directory traversal vulnerability in error.php in MD-Pro 1.0.76 and earlier allows remote authenticated users to read and include arbitrary files via the PNSVlang cookie, as demonstrated by uploading a GIF image using AddDownload or injecting PHP code into a log file, then accessing it.
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Analysis
by VulDB Data Team • 08/05/2024
The vulnerability identified as CVE-2006-7112 represents a critical directory traversal flaw affecting MD-Pro 1.0.76 and earlier versions. This security weakness resides within the error.php script and specifically exploits the PNSVlang cookie parameter to manipulate file access patterns. The vulnerability stems from inadequate input validation and sanitization mechanisms that fail to properly restrict file path access, allowing attackers to navigate beyond intended directories and access arbitrary files on the server. This directory traversal vulnerability enables attackers to bypass normal access controls and potentially execute malicious code or retrieve sensitive information from the system.
The technical exploitation of this vulnerability occurs through a multi-step process that begins with authentication, as the flaw requires remote authenticated users to leverage their credentials. Attackers can manipulate the PNSVlang cookie value to traverse directory structures and access files that should remain protected. The demonstration of this vulnerability typically involves uploading a GIF image through the AddDownload functionality or injecting PHP code into log files, which then can be accessed through the vulnerable error.php script. This approach exploits the server's failure to properly validate and sanitize user-supplied input before using it in file operations, creating a path traversal condition that allows unauthorized file access.
The operational impact of this vulnerability extends beyond simple information disclosure to potentially enable full system compromise. Attackers can leverage this flaw to read sensitive files including configuration data, database credentials, application source code, and other confidential information stored on the server. The ability to include arbitrary files through the vulnerable cookie parameter creates opportunities for remote code execution, particularly when combined with the log file injection technique. This vulnerability effectively undermines the application's security model by allowing authenticated users to bypass access controls and potentially escalate privileges within the system.
Organizations affected by this vulnerability should implement immediate mitigations including upgrading to MD-Pro versions that address this directory traversal issue. The fix typically involves implementing proper input validation and sanitization of all user-supplied parameters, particularly those used in file path operations. Security measures should include validating cookie values against a whitelist of acceptable languages, implementing proper path normalization, and ensuring that file access operations are restricted to predetermined directories. This vulnerability aligns with CWE-22, which describes improper limitation of a pathname to a restricted directory, and represents a classic example of path traversal attacks that fall under ATT&CK technique T1059.007 for execution through web shells and T1078 for valid accounts exploitation. Organizations should also implement web application firewalls to detect and block malicious cookie values and establish comprehensive monitoring for unauthorized file access attempts.