CVE-2008-2181 in cpLinks
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in search.php in cpLinks 1.03 allow remote attackers to inject arbitrary web script or HTML via the (1) search_text and (2) search_category parameters. NOTE: the XSS reportedly occurs in a forced SQL error message. NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 10/21/2024
The vulnerability identified as CVE-2008-2181 represents a critical cross-site scripting flaw within the cpLinks 1.03 web application, specifically affecting the search.php script. This vulnerability resides in the application's handling of user input parameters, creating an avenue for remote attackers to execute malicious code within the context of other users' browsers. The flaw manifests through two distinct parameter injection points: search_text and search_category, both of which are processed without adequate input sanitization or output encoding mechanisms. The security implications extend beyond typical XSS scenarios as the vulnerability is reported to occur within a forced SQL error message context, indicating that the attack vector leverages database error handling mechanisms to deliver malicious payloads.
The technical exploitation of this vulnerability follows a standard XSS attack pattern where malicious input is accepted through the web application's search functionality and subsequently rendered back to users without proper HTML escaping or context-appropriate encoding. When attackers submit crafted payloads through either search_text or search_category parameters, the application processes these inputs and displays them within the error message context, thereby executing the injected scripts in the victim's browser environment. This behavior aligns with CWE-79 - Improper Neutralization of Input During Web Page Generation, which specifically addresses the failure to sanitize user-supplied data before incorporating it into dynamic web content. The forced SQL error message component adds complexity to the exploitation process as it suggests that the vulnerability may be triggered through malformed input that causes database errors, which are then displayed to users.
The operational impact of this vulnerability is significant as it enables attackers to perform various malicious activities including session hijacking, credential theft, defacement of the web application, and redirection to malicious sites. Users who interact with the vulnerable cpLinks application may unknowingly execute attacker-controlled scripts that can steal cookies, modify page content, or redirect users to phishing sites. The forced SQL error message context indicates that the vulnerability may be particularly difficult to detect and patch as it occurs within error handling code paths rather than normal application processing flows. This characteristic places the vulnerability in the ATT&CK framework under T1059.007 - Command and Scripting Interpreter: JavaScript, as the attack executes JavaScript code within the victim's browser environment.
Mitigation strategies for this vulnerability should focus on implementing robust input validation and output encoding mechanisms throughout the application's codebase. The primary remediation involves sanitizing all user inputs received through the search_text and search_category parameters before they are processed or displayed in error messages. This approach aligns with the principle of defense in depth and follows the OWASP Top Ten recommendations for preventing XSS vulnerabilities. Implementing proper HTML escaping for all dynamic content generation, particularly within error handling routines, would prevent the execution of malicious scripts. Additionally, the application should employ a whitelist-based input validation approach for search parameters and consider implementing Content Security Policy headers to provide an additional layer of protection against XSS attacks. The vulnerability also highlights the importance of secure error handling practices where database errors should not expose internal application details or allow arbitrary code execution. Organizations should also consider implementing web application firewalls and regular security code reviews to identify similar patterns that could lead to similar vulnerabilities in other components of their web applications.