CVE-2006-3769 in Top XL
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Top XL 1.1 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) pass and (2) pass2 parameters in (a) add.php or the (3) id parameter in (b) members/index.php.
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Analysis
by VulDB Data Team • 09/17/2017
The vulnerability described in CVE-2006-3769 represents a critical cross-site scripting flaw affecting Top XL version 1.1 and earlier installations. This vulnerability resides within web applications that handle user input through specific parameter names without proper sanitization or validation. The affected parameters include pass and pass2 in the add.php script and the id parameter in members/index.php, all of which are susceptible to malicious input injection that could compromise user sessions and data integrity.
This vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically representing a stored XSS variant where user-supplied data is directly embedded into web pages without adequate input validation or output encoding. The attack vectors exploit the application's failure to properly sanitize user-provided data before incorporating it into dynamic web content. When attackers submit malicious scripts through the vulnerable parameters, these scripts execute in the context of other users' browsers, potentially leading to session hijacking, credential theft, or unauthorized actions within the application.
The operational impact of this vulnerability extends beyond simple script injection, as it enables attackers to manipulate user experiences and potentially gain unauthorized access to sensitive information. The exploitation of the pass and pass2 parameters in add.php suggests that the application handles user authentication data, making this vector particularly dangerous for credential compromise. The id parameter in members/index.php indicates that member information is also at risk, potentially allowing attackers to manipulate user access or extract sensitive member data through session manipulation or redirection attacks.
Security practitioners should consider this vulnerability in the context of the MITRE ATT&CK framework, specifically mapping it to the T1059.001 technique for command and scripting interpreter with the use of web scripting. The vulnerability demonstrates poor input validation practices that align with common web application security weaknesses identified in OWASP Top Ten 2004 and subsequent versions. Organizations should prioritize immediate remediation through proper input sanitization, output encoding, and parameter validation to prevent exploitation of these XSS vulnerabilities.
Mitigation strategies should include implementing comprehensive input validation on all user-supplied parameters, particularly those used in authentication and user management functions. The application should employ proper output encoding techniques when displaying user data, ensuring that any potentially malicious content is rendered harmless. Additionally, implementing a Content Security Policy (CSP) header can provide an additional layer of protection against XSS attacks by restricting script execution sources. Regular security audits and input validation testing should be conducted to identify similar vulnerabilities in other application components and prevent future exploitation attempts.