CVE-2006-2290 in 2005-Comments-Script
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in kommentar.php in 2005-Comments-Script allow remote attackers to inject arbitrary web script or HTML via the (1) id, (2) email, and (3) url parameter.
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Analysis
by VulDB Data Team • 09/09/2017
The vulnerability identified as CVE-2006-2290 represents a critical cross-site scripting flaw within the 2005-Comments-Script application, specifically affecting the kommentar.php component. This type of vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is one of the most prevalent and dangerous web application security flaws. The vulnerability stems from inadequate input validation and output encoding mechanisms within the comment submission processing script, creating an exploitable entry point for malicious actors to inject arbitrary web scripts or HTML content into the application's response.
The technical implementation of this vulnerability occurs through three distinct parameter injection points within the kommentar.php script. Attackers can exploit the id, email, and url parameters to inject malicious payloads that will be executed in the context of other users' browsers. When these parameters are processed without proper sanitization or encoding, the injected scripts become persistent within the application's comment system, executing whenever legitimate users view the affected comments. This creates a chained attack scenario where a single compromised comment can propagate malicious code to multiple users who interact with the vulnerable application.
The operational impact of this vulnerability extends beyond simple script injection, creating potential pathways for more sophisticated attacks including session hijacking, credential theft, and redirection to malicious sites. The persistence of these XSS vulnerabilities means that once exploited, malicious scripts can remain active for extended periods, continuously compromising users who access the affected application. This vulnerability directly aligns with ATT&CK technique T1531 for "Use of Unsecured Credentials" and T1566 for "Phishing" as attackers can leverage the XSS to capture user sessions or redirect victims to fraudulent sites. The attack surface is particularly concerning because comment systems are typically designed to be interactive and user-facing, making them prime targets for exploitation.
Mitigation strategies for CVE-2006-2290 should focus on implementing robust input validation and output encoding mechanisms throughout the application. The primary defense involves sanitizing all user-supplied input before processing and ensuring that any output rendered to users is properly encoded to prevent script execution. This includes implementing Content Security Policy headers to restrict script execution, utilizing parameterized queries where applicable, and employing proper HTML escaping techniques for all dynamic content. Organizations should also consider implementing Web Application Firewall rules to detect and block common XSS attack patterns, while regular security audits and code reviews should be conducted to identify similar vulnerabilities in other application components. The remediation process should follow established security frameworks such as OWASP Top Ten and NIST guidelines for secure coding practices to ensure comprehensive protection against similar cross-site scripting vulnerabilities.