CVE-2006-4230 in Lizge Web Portal
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in index.php in Lizge V.20 Web Portal allow remote attackers to execute arbitrary PHP code via a URL in the (1) lizge or (2) bade parameters.
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Analysis
by VulDB Data Team • 09/23/2017
The vulnerability identified as CVE-2006-4230 represents a critical remote file inclusion flaw in the Lizge V.20 Web Portal software, specifically affecting the index.php script. This vulnerability stems from improper input validation and sanitization mechanisms that fail to adequately restrict user-supplied data from being directly incorporated into file inclusion operations. The flaw manifests when the application processes the lizge or bade parameters without sufficient validation, allowing malicious actors to inject arbitrary URLs that are then executed as PHP code within the web server context.
This type of vulnerability falls under the category of CWE-88, which describes improper neutralization of special elements used in an expression, specifically in the context of file inclusion operations. The vulnerability enables attackers to leverage the web application's file inclusion functionality to load and execute malicious code from remote servers, effectively bypassing normal security controls. The attack vector operates through the manipulation of HTTP parameters where the lizge and bade variables are processed without proper sanitization, creating an environment where remote code execution becomes possible.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with the capability to gain full control over the affected web server. Once exploited, adversaries can upload additional malicious files, establish backdoors, access sensitive data, and potentially use the compromised server as a launch point for further attacks within the network infrastructure. The vulnerability affects the web application's integrity and confidentiality, as it allows unauthorized access to the server's file system and execution environment. This type of vulnerability is particularly dangerous in web portal environments where multiple users interact with the system, as it can be exploited to compromise the entire application and underlying infrastructure.
Mitigation strategies for CVE-2006-4230 should focus on implementing strict input validation and sanitization procedures, particularly for parameters that are used in file inclusion operations. The recommended approach involves disabling remote file inclusion capabilities entirely by setting the allow_url_fopen directive to off in the php.ini configuration file, as well as implementing proper parameter validation that rejects any input containing suspicious characters or protocols. Additionally, developers should employ secure coding practices that include using whitelisting mechanisms for file inclusion parameters and implementing proper error handling that does not expose sensitive system information. Organizations should also consider implementing web application firewalls and monitoring systems to detect and prevent exploitation attempts, aligning with the ATT&CK framework's mitigation strategies for remote code execution vulnerabilities. The vulnerability demonstrates the critical importance of input validation and the principle of least privilege in web application security, as it highlights how insufficient parameter validation can lead to complete system compromise.