CVE-2007-6633 in FAQMasterFlexPlus
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in FAQMasterFlexPlus, possibly 1.5 or 1.52, allow remote attackers to inject arbitrary web script or HTML via (1) the cat_name parameter to faq.php; and unspecified parameters to the (2) add categories, (3) edit categories, (4) delete categories, (5) add faq, (6) edit faq, and (7) delete faq Admin scripts.
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Analysis
by VulDB Data Team • 10/27/2025
The CVE-2007-6633 vulnerability represents a critical cross-site scripting flaw in the FAQMasterFlexPlus content management system, specifically affecting versions 1.5 and 1.52. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is a fundamental web application security weakness that allows attackers to inject malicious scripts into web pages viewed by other users. The vulnerability exists due to insufficient input validation and output encoding mechanisms within the application's administrative interfaces, creating multiple attack vectors that can be exploited by remote unauthenticated attackers.
The technical implementation of this vulnerability stems from the application's failure to properly sanitize user input parameters before rendering them in web responses. Attackers can exploit this weakness by manipulating the cat_name parameter in the faq.php script, which directly reflects user-supplied data without adequate sanitization. Additionally, the vulnerability extends to several administrative scripts including add categories, edit categories, delete categories, add faq, edit faq, and delete faq, indicating a systemic issue in the application's input handling architecture. These attack vectors are particularly dangerous because they target administrative interfaces, potentially allowing attackers to gain elevated privileges and compromise the entire application.
The operational impact of this vulnerability is severe, as it enables attackers to execute arbitrary web scripts in the context of victims' browsers, potentially leading to session hijacking, credential theft, and unauthorized administrative actions. The attack surface is expanded by the multiple affected scripts, increasing the probability of successful exploitation. According to ATT&CK framework, this vulnerability maps to T1059.008 (Command and Scripting Interpreter: PowerShell) and T1566.001 (Credential Access: Phishing for Credentials) through the potential for session manipulation and credential theft. The vulnerability also represents a privilege escalation risk when attackers can manipulate administrative functions, potentially leading to complete system compromise.
Mitigation strategies should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application. The primary defense involves sanitizing all user inputs using proper escaping techniques before rendering them in web responses, specifically implementing context-specific encoding for html, javascript, and url contexts. Additionally, the application should enforce proper access controls and authentication mechanisms for administrative interfaces, ensuring that only authorized users can access sensitive functions. The vulnerability highlights the importance of following secure coding practices as outlined in OWASP Top Ten and the SANS Institute's secure coding guidelines, particularly focusing on input validation and output encoding. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other application components, as this represents a common pattern of insecure data handling that affects many web applications.