CVE-2009-3747 in TBmnetCMS
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php in TBmnetCMS 1.0 allows remote attackers to inject arbitrary web script or HTML via the content parameter. NOTE: this was originally reported for tbmnet.php, but that program does not exist in the TBmnetCMS 1.0 distribution.
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Analysis
by VulDB Data Team • 09/03/2025
The CVE-2009-3747 vulnerability represents a classic cross-site scripting flaw within the TBmnetCMS 1.0 content management system, specifically targeting the index.php script. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is one of the most prevalent and dangerous web application security weaknesses. The flaw exists in the handling of user-supplied input through the content parameter, creating an avenue for malicious actors to execute arbitrary web scripts or HTML code within the context of other users' browsers. The vulnerability was initially reported against a non-existent tbmnet.php file, which highlights the importance of accurate vulnerability reporting and the potential for confusion in security advisories.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding within the TBmnetCMS 1.0 framework. When the index.php script processes the content parameter without proper sanitization, it fails to escape or filter special characters that could be interpreted as HTML or JavaScript code. This allows an attacker to inject malicious payloads that get executed when other users view the affected content. The vulnerability operates at the application layer and requires no special privileges to exploit, making it particularly dangerous as it can be leveraged by anyone with access to the CMS interface or by users who can influence content submission. The flaw demonstrates a failure in the principle of least privilege and proper input sanitization, which are fundamental security practices outlined in the OWASP Top Ten and the NIST Cybersecurity Framework.
The operational impact of CVE-2009-3747 extends beyond simple script injection, potentially enabling attackers to perform session hijacking, deface websites, steal sensitive user data, or redirect users to malicious sites. This vulnerability can be exploited through various attack vectors including social engineering campaigns where users are tricked into clicking malicious links or through automated scanning tools that identify the vulnerability. The attack surface is particularly concerning because content management systems often handle sensitive information and user data, making them attractive targets for cybercriminals. According to the MITRE ATT&CK framework, this vulnerability maps to T1059.007 for Command and Scripting Interpreter and T1566 for Phishing, as it enables both direct code execution and social engineering attacks. The vulnerability also aligns with the concept of persistent XSS as described in the OWASP Testing Guide, where malicious scripts can be stored and executed repeatedly.
Mitigation strategies for CVE-2009-3747 require immediate implementation of input validation and output encoding measures within the TBmnetCMS 1.0 platform. Organizations should implement proper parameter sanitization techniques including HTML entity encoding, whitelist-based input validation, and Content Security Policy (CSP) headers to prevent script execution. The recommended approach involves escaping special characters such as angle brackets, quotes, and script tags before processing user input, while also implementing proper output encoding when displaying content to users. Additionally, the CMS should be updated to a patched version or replaced with a more secure alternative, as TBmnetCMS 1.0 appears to be an outdated system with no security updates. Security monitoring should include regular vulnerability scanning and web application firewalls to detect and block potential exploitation attempts. The remediation process should also include user education to prevent social engineering attacks that might leverage this vulnerability, ensuring that all stakeholders understand the importance of not clicking suspicious links or submitting unverified content.