CVE-2006-6360 in PHP Upload Center
Summary
by MITRE
PHP remote file inclusion vulnerability in activate.php in PHP Upload Center 2.0 allows remote attackers to execute arbitrary PHP code via a URL in the footerpage parameter.
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Analysis
by VulDB Data Team • 12/21/2024
The vulnerability described in CVE-2006-6360 represents a critical remote file inclusion flaw within the PHP Upload Center 2.0 web application. This security weakness exists in the activate.php script where the application fails to properly validate or sanitize user input parameters, specifically the footerpage parameter. The vulnerability stems from the application's improper handling of external URL references, allowing malicious actors to inject arbitrary PHP code through web requests. This type of vulnerability is classified under CWE-98 as "Improper Input Validation" and falls within the broader category of CWE-88 "Improper Neutralization of Argument Delimiters in a Command" when considering the potential for command injection through file inclusion mechanisms. The flaw enables attackers to leverage the application's file inclusion functionality to execute malicious code on the target server, potentially leading to complete system compromise.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL and passes it through the footerpage parameter in the activate.php script. When the application processes this parameter without proper validation, it attempts to include the specified remote file, effectively executing any PHP code contained within that file. This remote file inclusion mechanism operates through PHP's include or require functions, which can be manipulated to load external resources from remote servers. The vulnerability is particularly dangerous because it allows attackers to execute arbitrary code with the privileges of the web server process, potentially enabling them to access sensitive data, modify files, or establish persistent backdoors. The ATT&CK framework categorizes this as a technique under T1190 "Exploit Public-Facing Application" with potential lateral movement capabilities through T1078 "Valid Accounts" and T1566 "Phishing for Information" for initial access vectors.
The operational impact of this vulnerability extends beyond simple code execution, as it can result in complete system compromise and data breaches. Attackers can leverage the remote file inclusion to deploy web shells, steal database credentials, access user information, or use the compromised server as a launch point for further attacks within the network infrastructure. The vulnerability affects any system running PHP Upload Center 2.0 where the application is configured to accept external file inclusion requests. Organizations may experience significant downtime, data loss, and potential regulatory compliance violations if such an exploit is successfully executed against their systems. The exploitation typically requires minimal technical expertise, making it a preferred target for both skilled and less experienced attackers. Security professionals should note that this vulnerability represents a classic example of how insufficient input validation can lead to severe consequences in web applications. Mitigation strategies include implementing proper parameter validation, disabling remote file inclusion features, using allow_url_include directives set to off, and regularly updating applications to patched versions. Additionally, implementing web application firewalls and conducting regular security assessments can help detect and prevent exploitation attempts. The vulnerability demonstrates the importance of following secure coding practices such as those outlined in the OWASP Top Ten and the principle of least privilege when configuring web applications to prevent unauthorized code execution.