CVE-2006-7050 in WikkaWiki
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in WikkaWiki (Wikka Wiki) before 1.1.6.2 allows remote attackers to inject arbitrary javascript via (1) events in forced links (url parameter) that are not properly handled in formatters/wakka.php, and possibly (2) other vectors in wikka.php.
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Analysis
by VulDB Data Team • 08/20/2018
This cross-site scripting vulnerability exists in WikkaWiki versions prior to 1.1.6.2 and represents a critical security flaw that allows remote attackers to execute malicious javascript code within the context of users' browsers. The vulnerability specifically affects the handling of user input in the formatters/wakka.php file where forced links containing url parameters are processed without proper sanitization or encoding. The flaw enables attackers to inject malicious scripts through event handlers in forced links that are not adequately filtered or escaped during the rendering process.
The technical implementation of this vulnerability occurs when WikkaWiki processes user-supplied input in the url parameter of forced links. When these links are rendered in the web interface, the application fails to properly escape special characters and javascript event handlers, allowing attackers to inject malicious code that executes in the context of other users' browsers. The vulnerability extends beyond just the url parameter to potentially affect other vectors within the wikka.php file, making it a broader class of input sanitization issue. This type of flaw falls under CWE-79 which specifically addresses Cross-site Scripting vulnerabilities in web applications.
The operational impact of this vulnerability is significant as it allows attackers to perform a wide range of malicious activities including session hijacking, credential theft, data exfiltration, and redirection to malicious websites. Users who view pages containing the injected javascript code will have their browser sessions compromised, potentially leading to unauthorized access to their accounts and the ability to perform actions on their behalf. The vulnerability affects the core functionality of the wiki platform, making it particularly dangerous for collaborative environments where multiple users interact with shared content.
Mitigation strategies for this vulnerability include upgrading to WikkaWiki version 1.1.6.2 or later, which contains proper input sanitization and output encoding mechanisms. Organizations should implement comprehensive input validation that filters or encodes special characters in user-supplied data before processing. The implementation of Content Security Policy headers can provide additional protection against script injection attacks. Security teams should also conduct regular security audits of web applications to identify similar input handling vulnerabilities. This vulnerability aligns with ATT&CK technique T1566 which covers the use of malicious links and web-based attacks to compromise user sessions and execute unauthorized code in web browsers.