CVE-2014-8293 in Voice Of Web AllMyGuests
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Voice Of Web AllMyGuests 0.4.1 allows remote attackers to inject arbitrary web script or HTML via the AMG_signin_topic parameter to index.php.
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Analysis
by VulDB Data Team • 03/19/2018
The CVE-2014-8293 vulnerability represents a critical cross-site scripting flaw discovered in the Voice Of Web AllMyGuests version 0.4.1 web application. This vulnerability resides within the application's input validation mechanisms, specifically in how the system processes the AMG_signin_topic parameter submitted through the index.php endpoint. The flaw allows remote attackers to inject malicious web scripts or HTML content directly into the application's response, creating a persistent security risk that can affect all users interacting with the vulnerable system.
This vulnerability manifests as a classic reflected cross-site scripting issue where user-supplied input fails to undergo proper sanitization or encoding before being rendered in the web application's output. The AMG_signin_topic parameter serves as the attack vector through which malicious payloads can be transmitted, exploiting the application's failure to validate or escape user-provided data. When legitimate users view pages containing the injected content, their browsers execute the malicious scripts within the context of the vulnerable application, potentially compromising user sessions and enabling further exploitation.
The operational impact of this vulnerability extends beyond simple script injection, as it can facilitate session hijacking, credential theft, and data exfiltration attacks. Attackers can craft malicious payloads that steal cookies, redirect users to phishing sites, or manipulate application functionality to gain unauthorized access to user accounts. The vulnerability affects the confidentiality, integrity, and availability of the web application, as it allows unauthorized parties to manipulate the application's behavior and potentially access sensitive user information. This weakness directly maps to CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') and aligns with ATT&CK technique T1059.001 for command and scripting interpreter.
Mitigation strategies for CVE-2014-8293 require immediate implementation of proper input validation and output encoding mechanisms throughout the application. Developers should implement strict parameter validation for the AMG_signin_topic input, ensuring all user-supplied data undergoes sanitization before processing or display. The application must employ context-specific output encoding, particularly when rendering user-provided content in HTML contexts. Additionally, implementing a Content Security Policy (CSP) header can provide an additional layer of protection against script execution. Regular security audits, input validation testing, and adherence to secure coding practices should be mandatory to prevent similar vulnerabilities in future releases. The vulnerability underscores the critical importance of validating all user inputs and properly escaping output to prevent XSS attacks that can compromise entire web applications and user sessions.