CVE-2007-2013 in Einfacher Passworschutz
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php in JEx-Treme Einfacher Passworschutz allows remote attackers to inject arbitrary web script or HTML via the msg parameter.
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Analysis
by VulDB Data Team • 08/17/2025
The vulnerability identified as CVE-2007-2013 represents a classic cross-site scripting flaw within the JEx-Treme Einfacher Passworschutz web application. This particular implementation exists in the index.php file where user input is not properly sanitized or validated before being rendered back to web browsers. The vulnerability specifically targets the msg parameter which serves as an entry point for malicious actors to inject arbitrary web scripts or HTML content into the application's response. The flaw demonstrates a fundamental failure in input validation and output encoding practices that are critical for web application security.
This XSS vulnerability operates under CWE-79 which categorizes improper neutralization of input during web page generation as a primary weakness. The attack vector allows remote threat actors to execute malicious scripts in the context of other users' browsers who visit the affected application. The vulnerability's impact extends beyond simple script execution as it can enable session hijacking, credential theft, and redirection to malicious sites. The JEx-Treme Einfacher Passworschutz application appears to process user-supplied messages without adequate sanitization, creating an environment where attackers can manipulate the application's behavior through crafted input parameters.
The operational implications of this vulnerability are significant for any organization relying on this password protection system. When exploited, the XSS flaw can compromise user sessions and potentially allow attackers to escalate privileges within the application. The vulnerability affects the core functionality of password protection mechanisms, undermining the security posture of the entire system. Attackers can leverage this weakness to steal authentication cookies, modify user interface elements, or redirect victims to phishing sites. The impact is particularly concerning given that the vulnerability exists in a password protection component, which typically handles sensitive authentication data and user credentials.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and output encoding mechanisms throughout the application. The recommended approach involves sanitizing all user-supplied input including the msg parameter through strict validation and encoding before any output is generated. Implementing Content Security Policy headers and using frameworks that automatically escape output can significantly reduce the risk of XSS exploitation. Organizations should also consider implementing web application firewalls to detect and block malicious input patterns. The vulnerability highlights the importance of following secure coding practices as outlined in OWASP Top 10 and the need for comprehensive security testing including dynamic and static analysis to identify similar weaknesses in web applications. Regular security updates and patch management are essential to prevent exploitation of known vulnerabilities in legacy applications.