CVE-2005-2885 in MD-Pro
Summary
by MITRE
The Downloads page in MAXdev MD-Pro 1.0.73, and possibly earlier versions, uses an incomplete blacklist to check for dangerous file extensions, which could allow remote attackers to bypass file extension checks and execute arbitrary commands by uploading a file with a different extension, as demonstrated using .inc files.
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Analysis
by VulDB Data Team • 08/15/2025
The vulnerability identified as CVE-2005-2885 affects the MAXdev MD-Pro 1.0.73 content management system and potentially earlier versions, presenting a critical security flaw in the file upload validation mechanism. This issue resides within the Downloads page functionality where the application employs an incomplete blacklist approach to restrict file uploads based on dangerous extensions. The flaw represents a classic security misconfiguration that demonstrates poor input validation practices and inadequate security controls. The vulnerability specifically targets the file extension checking mechanism, which is a fundamental security control designed to prevent malicious file uploads that could lead to remote code execution or system compromise.
The technical implementation of this vulnerability stems from the application's use of a limited blacklist approach that fails to account for various file extension variations and encoding methods that attackers can employ to bypass the security restrictions. When an attacker uploads a file with a .inc extension, which is typically associated with include files in web applications, the system's incomplete blacklist may not recognize this extension as dangerous. This allows the malicious file to be uploaded successfully and subsequently executed by the web server, potentially leading to complete system compromise. The vulnerability operates under the principle of insecure input validation where the system does not properly validate or sanitize user-supplied data, creating an attack surface that can be exploited through file upload mechanisms.
The operational impact of this vulnerability is severe as it enables remote code execution capabilities that can result in full system compromise, data theft, or service disruption. Attackers can leverage this vulnerability to upload malicious files that execute arbitrary code on the target server, potentially allowing them to gain shell access, install backdoors, or modify critical system files. The attack vector is particularly dangerous because it requires minimal privileges to exploit and can be automated through web-based interfaces. This vulnerability directly violates security principles outlined in the OWASP Top Ten, specifically addressing the issue of insecure file upload functionality. The consequences extend beyond immediate system compromise to include potential lateral movement within networks and persistent access to compromised systems.
The mitigation strategies for this vulnerability involve implementing robust input validation mechanisms that go beyond simple blacklisting approaches. Organizations should adopt whitelist-based validation where only explicitly allowed file extensions are permitted for upload, rather than attempting to block dangerous extensions through blacklists. This approach aligns with security best practices and follows the principle of least privilege in file handling operations. Additionally, implementing multiple layers of security controls including file type detection, content analysis, and proper file handling procedures can significantly reduce the risk. The remediation process should include updating the application to a patched version, implementing proper access controls, and establishing monitoring mechanisms to detect unauthorized file uploads. Security professionals should also consider implementing web application firewalls and intrusion detection systems to provide additional protection against similar vulnerabilities. The vulnerability demonstrates the importance of defense in depth strategies and proper security architecture design as outlined in the MITRE ATT&CK framework where such issues fall under the category of malicious file execution and privilege escalation techniques.