CVE-2006-4837 in DCP-Portal
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in DCP-Portal SE 6.0 allow remote attackers to execute arbitrary PHP code via a URL in the root parameter in (1) library/lib.php and (2) library/editor/editor.php. NOTE: the same primary issue can be used for full path disclosure with an invalid parameter that reveals the installation path in an error message.
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Analysis
by VulDB Data Team • 07/02/2024
The vulnerability identified as CVE-2006-4837 represents a critical remote code execution flaw affecting DCP-Portal SE 6.0 through multiple remote file inclusion vectors. This vulnerability stems from improper input validation within the application's core components, specifically in the library/lib.php and library/editor/editor.php files where the root parameter is processed without adequate sanitization. The flaw allows malicious actors to inject arbitrary PHP code through URL parameters, enabling complete system compromise and unauthorized access to sensitive data and resources.
The technical exploitation of this vulnerability occurs when an attacker manipulates the root parameter to include malicious URLs that point to remote code repositories. This type of vulnerability falls under CWE-88, which describes improper neutralization of special elements used in an expression, and specifically relates to CWE-94, which addresses the execution of code in dynamically generated code. The vulnerability operates through a classic remote file inclusion attack pattern where the application's failure to validate user input creates an execution path for attacker-controlled code, fundamentally undermining the application's security boundaries.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise and data exfiltration capabilities. Attackers can leverage this flaw to establish persistent backdoors, escalate privileges, and access sensitive system information. The additional path disclosure aspect of this vulnerability, which reveals installation paths through error messages, provides attackers with valuable reconnaissance data that can be used for further exploitation attempts. This dual nature of the vulnerability significantly increases the attack surface and potential damage scope.
Organizations affected by this vulnerability should immediately implement multiple layers of mitigation strategies including input validation, parameter sanitization, and web application firewall rules. The implementation of secure coding practices such as whitelisting parameter values, using absolute paths instead of relative ones, and implementing proper error handling can effectively prevent exploitation. According to ATT&CK framework, this vulnerability maps to T1190 - Exploit Public-Facing Application and T1059 - Command and Scripting Interpreter, highlighting the need for network segmentation and application-level security controls. Regular security audits, patch management programs, and comprehensive intrusion detection systems should be deployed to monitor for exploitation attempts and maintain overall system security posture.