CVE-2012-1069 in lknSupport
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in module/kb/search_word in the search module in lknSupport allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO.
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Analysis
by VulDB Data Team • 01/19/2025
The CVE-2012-1069 vulnerability represents a classic cross-site scripting flaw within the lknSupport application's search functionality. This vulnerability exists in the module/kb/search_word component of the search module, specifically in how the application processes input through the PATH_INFO parameter. The flaw allows remote attackers to execute malicious web scripts or HTML code within the context of other users' browsers, creating a significant security risk for the application's user base. The vulnerability demonstrates poor input validation and output encoding practices that are fundamental to preventing XSS attacks in web applications.
The technical implementation of this vulnerability stems from the application's failure to properly sanitize or escape user-supplied input that flows through the PATH_INFO server variable. When users navigate to search pages with specific URL parameters, the application processes these inputs without adequate validation, allowing malicious payloads to be stored or executed within the search functionality. This particular vector exploits the search module's handling of user queries, where the PATH_INFO parameter is not properly filtered before being rendered in the web page context. The vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws in web applications. Attackers can leverage this weakness by crafting malicious URLs containing script tags or other HTML content that gets executed when other users view the search results or navigate to affected pages.
The operational impact of CVE-2012-1069 extends beyond simple script injection, as it can enable attackers to steal session cookies, perform unauthorized actions on behalf of users, or redirect victims to malicious websites. In a production environment, this vulnerability could allow threat actors to compromise user accounts, especially if the application handles sensitive data or provides administrative functions. The attack surface is particularly concerning because search functionality is typically accessible to all users and often displays results in contexts where malicious content could be executed without user awareness. This vulnerability aligns with ATT&CK technique T1531 which focuses on using compromised applications to gain access to user sessions and execute malicious code within legitimate application contexts. The potential for privilege escalation increases if the application's search module has access to user-specific data or if the vulnerable component is used in administrative interfaces.
Mitigation strategies for CVE-2012-1069 require immediate implementation of proper input validation and output encoding measures. The primary fix involves sanitizing all user-supplied input from PATH_INFO parameters before processing or displaying them in web pages. This includes implementing proper HTML escaping, using Content Security Policy headers, and ensuring that the search module validates input length and character sets. Organizations should also consider implementing input whitelisting for URL parameters and establishing secure coding practices that prevent the direct inclusion of user data in executable contexts. Regular security testing including dynamic application security testing and manual code reviews should be conducted to identify similar vulnerabilities in other application modules. The fix should align with OWASP Top 10 recommendations for preventing XSS attacks and should be validated through penetration testing to ensure that the remediation effectively blocks malicious payloads from executing within the application's context.