CVE-2006-2367 in Clansys
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php in Clansys (aka Clanpage System) 1.0 and 1.1 allows remote attackers to inject arbitrary web script or HTML via the func parameter in a search function.
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Analysis
by VulDB Data Team • 07/26/2018
The vulnerability identified as CVE-2006-2367 represents a classic cross-site scripting flaw within the Clansys content management system, specifically affecting versions 1.0 and 1.1 known also as Clanpage System. This security weakness resides in the index.php file where the application fails to properly sanitize user input passed through the func parameter during search operations. The flaw enables malicious actors to inject arbitrary web scripts or HTML code into the application's response, creating a persistent security risk for all users interacting with the vulnerable system.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding practices within the Clansys application. When users perform search operations through the search function, the system processes the func parameter without sufficient sanitization measures, allowing attackers to embed malicious payloads that execute in the context of other users' browsers. This type of vulnerability falls under CWE-79 which specifically addresses Cross-Site Scripting flaws, where applications fail to properly validate or encode user-controllable data before incorporating it into dynamically generated web pages. The vulnerability is particularly dangerous because it operates at the application layer, directly targeting the web interface where users interact with the system.
From an operational impact perspective, this XSS vulnerability exposes organizations using Clansys to several significant risks including session hijacking, credential theft, and data manipulation. Attackers can exploit this flaw to steal user sessions, potentially gaining administrative access to the system, or to redirect users to malicious websites that can harvest sensitive information. The vulnerability affects the confidentiality, integrity, and availability of the system by allowing unauthorized modification of web content and potential disruption of service. According to ATT&CK framework category T1059.001, adversaries can leverage such vulnerabilities to execute malicious code in the context of the victim's browser, while T1531 focuses on the exploitation of vulnerabilities to gain access to sensitive information through web application attacks.
The mitigation strategies for this vulnerability involve implementing proper input validation and output encoding mechanisms throughout the application. Organizations should ensure that all user-supplied data is sanitized before processing and that appropriate HTML encoding is applied when rendering user-controllable content. The most effective remediation approach involves implementing a comprehensive input validation framework that rejects or sanitizes potentially malicious input patterns, combined with output encoding that prevents script execution in web contexts. Additionally, organizations should consider implementing Content Security Policy headers to add an additional layer of protection against XSS attacks. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other parts of the application, while also ensuring that all system components are updated to the latest secure versions. The vulnerability demonstrates the critical importance of following secure coding practices and maintaining up-to-date security measures in web applications to prevent exploitation by threat actors.