CVE-2006-4634 in VBZooM
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php in VBZooM allows remote attackers to inject arbitrary web script or HTML via the UserID parameter, a different vector than CVE-2006-1133 and CVE-2005-2441.
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Analysis
by VulDB Data Team • 04/12/2019
The vulnerability identified as CVE-2006-4634 represents a cross-site scripting flaw within the VBZooM application's index.php file that specifically targets the UserID parameter. This issue falls under the broader category of web application security vulnerabilities that enable malicious actors to execute unauthorized scripts in the context of other users' browsers. The vulnerability is classified as a persistent XSS attack vector that allows remote code execution through web script injection, making it particularly dangerous for web applications that handle user authentication and session management. The flaw demonstrates a fundamental failure in input validation and output sanitization within the application's core functionality.
The technical implementation of this vulnerability occurs when the application fails to properly sanitize user-supplied input through the UserID parameter in the index.php script. When the application processes this parameter without adequate validation or encoding measures, it directly incorporates user-provided content into dynamically generated web pages without proper context-aware escaping. This allows an attacker to inject malicious JavaScript code or HTML content that gets executed in the victim's browser when the page is rendered. The vulnerability operates through the standard XSS attack pattern where untrusted data flows from the user input directly into the application's output without proper security controls. This type of flaw is categorized under CWE-79 which specifically addresses Cross-site Scripting vulnerabilities in software applications.
From an operational perspective, this vulnerability poses significant risks to the confidentiality, integrity, and availability of the affected web application and its users. Attackers can leverage this XSS flaw to steal session cookies, perform unauthorized actions on behalf of authenticated users, redirect victims to malicious websites, or deface the application's content. The impact extends beyond simple data theft as the injected scripts can manipulate the user interface, capture keystrokes, or establish persistent backdoors within the victim's browser environment. This vulnerability particularly affects user authentication systems where session hijacking can lead to complete account compromise and unauthorized access to sensitive information. The attack vector is particularly concerning because it operates through a common parameter that would be present in normal application usage patterns, making detection and prevention more challenging for security monitoring systems.
The mitigation strategies for CVE-2006-4634 should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's codebase. The primary defense involves sanitizing all user inputs through proper encoding before incorporating them into web page content, specifically implementing context-appropriate escaping for HTML, JavaScript, and URL contexts. Organizations should deploy web application firewalls that can detect and block suspicious input patterns targeting known XSS attack vectors. Additionally, implementing Content Security Policy headers can provide an additional layer of protection by restricting the sources from which scripts can be loaded. Regular security code reviews and automated vulnerability scanning should be integrated into the development lifecycle to identify similar issues in other application components. The vulnerability also highlights the importance of following secure coding practices and adhering to industry standards such as the OWASP Top Ten and NIST cybersecurity guidelines for preventing injection flaws in web applications. This specific vulnerability demonstrates why comprehensive security testing and input validation are essential components of any robust web application security framework.