CVE-2007-1957 in Guernion Sylvain Portail Web Php
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in Guernion Sylvain Portail Web Php (aka Gsylvain35 Portail Web, PwP) allow remote attackers to execute arbitrary PHP code via a URL in the pageAll parameter to index.php in (1) template/Vert/, or (2) template/Noir/.
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Analysis
by VulDB Data Team • 10/19/2017
The vulnerability identified as CVE-2007-1957 represents a critical remote file inclusion flaw within the Guernion Sylvain Portail Web Php web application, commonly known as Gsylvain35 Portail Web or PwP. This application framework, designed for web portal functionality, suffers from a fundamental security weakness that enables malicious actors to execute arbitrary code on the target system. The vulnerability manifests specifically in the application's handling of user-supplied input within the pageAll parameter, which is processed through the index.php script located in two distinct template directories: template/Vert/ and template/Noir/.
The technical flaw stems from improper input validation and sanitization within the application's parameter processing mechanism. When the pageAll parameter is passed to the index.php script, the application fails to properly validate or sanitize the input before incorporating it into file inclusion operations. This creates an environment where an attacker can inject malicious URLs that point to remote files containing arbitrary PHP code. The vulnerability falls under the category of CWE-98, which specifically addresses "Improper Control of Generation of Code ('Code Injection')" and aligns with the broader ATT&CK technique T1190 for "Exploit Public-Facing Application." The root cause lies in the application's reliance on user input without adequate security controls, allowing for direct manipulation of the file inclusion process.
The operational impact of this vulnerability is severe and far-reaching, as it provides attackers with complete control over the affected web server. Successful exploitation enables remote code execution, allowing malicious actors to install backdoors, steal sensitive data, compromise the entire server infrastructure, or use the compromised system as a launching point for further attacks within the network. The vulnerability affects the core functionality of the web portal application, potentially exposing all content and user data managed through the system. Additionally, the attack surface is expanded due to the presence of multiple vulnerable paths, increasing the likelihood of successful exploitation regardless of which template directory is targeted. This vulnerability is particularly dangerous because it requires no authentication and can be exploited from any remote location, making it an attractive target for automated scanning and exploitation tools commonly used in the cybersecurity threat landscape.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term security improvements. The primary solution involves implementing strict input validation and sanitization for all user-supplied parameters, particularly those used in file inclusion operations. Developers should employ whitelisting techniques to restrict file inclusion to predefined, trusted values rather than accepting arbitrary user input. The application should be updated to use secure coding practices that prevent dynamic file inclusion based on external parameters. Organizations should also implement proper access controls and network segmentation to limit exposure of vulnerable applications. Regular security audits and code reviews are essential to identify similar vulnerabilities in other parts of the application stack. The vulnerability demonstrates the critical importance of following secure coding guidelines and implementing defense-in-depth strategies as outlined in various cybersecurity frameworks including the OWASP Top Ten and NIST Cybersecurity Framework, which emphasize the necessity of input validation and secure file handling practices to prevent such remote code execution vulnerabilities.