CVE-2006-2365 in Vizra
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in a_login.php in Vizra allows remote attackers to inject arbitrary web script or HTML via the message parameter.
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Analysis
by VulDB Data Team • 09/06/2017
The vulnerability identified as CVE-2006-2365 represents a classic cross-site scripting flaw within the Vizra web application's authentication module. This security weakness exists in the a_login.php script where user input is not properly sanitized before being processed and displayed back to users. The vulnerability specifically affects the message parameter, which serves as an entry point for malicious actors to execute unauthorized code within the context of other users' browsers. The flaw stems from inadequate input validation and output encoding mechanisms that fail to neutralize potentially dangerous characters and script tags that could be embedded within the message parameter.
From a technical perspective, this XSS vulnerability operates under CWE-79 which classifies it as a cross-site scripting attack where untrusted data flows from a web application to a web browser without proper sanitization. The vulnerability allows remote attackers to inject malicious scripts that execute in the victim's browser context, potentially leading to session hijacking, credential theft, or redirection to malicious sites. The attack vector is particularly concerning because it targets the login page, which typically handles sensitive authentication data and user credentials, making the potential impact significantly more severe than a standard XSS flaw.
The operational impact of this vulnerability extends beyond simple script injection, as it creates a persistent threat vector that can be exploited across multiple user sessions. When an attacker successfully injects malicious code through the message parameter, any user who views the affected page becomes vulnerable to the injected script execution. This creates a chain reaction where compromised users may inadvertently propagate the malicious code to other users within the same application environment. The vulnerability also aligns with ATT&CK technique T1566 which describes social engineering tactics that leverage web-based attacks to gain unauthorized access to systems.
Mitigation strategies for CVE-2006-2365 should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's data flow. The most effective approach involves sanitizing all user-supplied input, particularly parameters like message, before processing or storing them. Implementing proper HTML entity encoding when displaying user content prevents script execution in browser contexts. Additionally, the application should employ Content Security Policy (CSP) headers to restrict script execution sources and prevent unauthorized code injection. Regular security code reviews and automated vulnerability scanning should be implemented to identify similar weaknesses in other application components. The remediation process must also include proper error handling that does not expose internal application details to end users, as this could provide attackers with additional attack surface information. Organizations should consider implementing web application firewalls to provide additional layers of protection against such injection attacks while ensuring that all user input undergoes strict validation before being processed by the application's backend systems.