CVE-2007-4169 in vgallite
Summary
by MITRE
** DISPUTED ** Multiple PHP remote file inclusion vulnerabilities in vgallite allow remote attackers to execute arbitrary PHP code via a URL in the (1) dirpath parameter to _functions.php or the (2) lang parameter to index.php. NOTE: CVE disputes vector 1 because the applicable include_once is located in a function that is not called on a direct request, and because $dirpath is an argument to this function. CVE disputes vector 2 because "lang" is a constant string within an include_once, not a variable. The researcher is also unreliable.
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Analysis
by VulDB Data Team • 08/08/2024
The vulnerability described in CVE-2007-4169 represents a disputed remote file inclusion issue within the vgallite application that could potentially allow attackers to execute arbitrary PHP code. This type of vulnerability falls under the category of insecure direct object references and remote code execution risks that have been historically significant in web application security. The reported vulnerability stems from improper input validation and handling of user-supplied parameters that are directly incorporated into PHP include statements without adequate sanitization or validation.
The technical flaw manifests in two potential attack vectors within the vgallite application. Vector one involves the dirpath parameter within the _functions.php file where a URL could be passed that gets processed through an include_once statement. Vector two involves the lang parameter in index.php where similar processing occurs. However, the CVE entry itself disputes both vectors due to fundamental architectural considerations. The first vector is disputed because the include_once statement is contained within a function that is not executed during direct requests, making the attack path invalid. The second vector is disputed because the lang parameter is described as a constant string within an include_once statement rather than a variable, which would prevent dynamic code execution. These disputes highlight the importance of thorough vulnerability analysis and the potential for misinterpretation of attack vectors during initial reporting.
The operational impact of this vulnerability, while disputed in its specific vectors, demonstrates the broader category of remote file inclusion threats that have historically affected numerous web applications. Such vulnerabilities can enable attackers to execute malicious code on vulnerable servers, potentially leading to complete system compromise, data exfiltration, and unauthorized access to sensitive information. The severity of these issues is typically rated high due to their potential for remote code execution and the ease with which they can be exploited. The vulnerability aligns with CWE-88, which describes improper neutralization of special elements used in an OS command, and relates to the broader ATT&CK technique of Command and Scripting Interpreter for execution of malicious code.
The disputed nature of this CVE entry reflects the challenges inherent in vulnerability classification and the importance of precise technical analysis. Security researchers must carefully examine the actual code execution paths and parameter handling to properly assess the validity of reported attack vectors. The original researcher's reliability is questioned, which further emphasizes the need for peer review and verification of vulnerability reports. This case demonstrates how initial vulnerability reports may contain inaccuracies or misinterpretations that require subsequent analysis and validation by the security community. The inclusion of such disputed vulnerabilities in CVE databases serves as a reminder of the complexity involved in vulnerability assessment and the necessity of detailed technical verification before implementing security mitigations.
Security practitioners should focus on implementing robust input validation and sanitization mechanisms for all user-supplied parameters that are used in dynamic include or require statements. The principle of least privilege should be applied to web application configurations, and all include paths should be validated against a whitelist of acceptable values. Additionally, the use of absolute paths instead of relative paths in include statements can prevent many file inclusion vulnerabilities. Regular security code reviews and automated vulnerability scanning should be implemented to identify and remediate similar issues before they can be exploited by malicious actors. The vulnerability serves as a cautionary example of why comprehensive testing and verification are essential components of effective vulnerability management processes.