CVE-2006-3237 in Enterprise Groupware Systems
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php in Enterprise Groupware System (EGS) 1.2.4 and earlier allows remote attackers to inject arbitrary web script or HTML via the module parameter.
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Analysis
by VulDB Data Team • 09/18/2017
The vulnerability described in CVE-2006-3237 represents a classic cross-site scripting flaw within the Enterprise Groupware System version 1.2.4 and earlier. This security weakness resides in the index.php file and specifically targets the module parameter handling mechanism. The vulnerability allows remote attackers to inject malicious web scripts or HTML content into the application's response, potentially compromising user sessions and data integrity. The issue stems from insufficient input validation and output sanitization of user-supplied parameters, creating an attack surface where malicious code can be executed within the context of other users' browsers.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL containing crafted script code within the module parameter. When the vulnerable application processes this parameter without proper sanitization, the injected code becomes part of the dynamic web page content served to unsuspecting users. This creates a persistent XSS vector where the malicious script executes in the victim's browser context, potentially stealing session cookies, redirecting users to malicious sites, or performing unauthorized actions on behalf of the user. The vulnerability is categorized under CWE-79 as "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", which is one of the most prevalent and dangerous web application security flaws.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable more sophisticated attacks such as session hijacking, credential theft, and data manipulation. An attacker could leverage this vulnerability to establish persistent access to user accounts, potentially compromising entire enterprise networks through compromised user credentials. The attack requires no special privileges or authentication, making it particularly dangerous as it can be exploited by anyone who can access the vulnerable application. According to ATT&CK framework, this vulnerability maps to T1566.001 "Phishing" and T1059.007 "Command and Scripting Interpreter: JavaScript", as it enables both social engineering attacks through crafted web content and direct code execution within user browsers.
Mitigation strategies for CVE-2006-3237 must address both immediate remediation and long-term security hardening. The primary solution involves implementing proper input validation and output encoding mechanisms for all user-supplied parameters, particularly those used in dynamic content generation. The application should sanitize the module parameter by removing or encoding potentially dangerous characters such as angle brackets, script tags, and javascript protocols. Additionally, implementing Content Security Policy headers can provide an additional layer of protection against XSS attacks by restricting the sources from which scripts can be loaded. Organizations should also consider deploying web application firewalls and regular security scanning tools to detect and prevent exploitation attempts. The vulnerability highlights the importance of secure coding practices and input validation as fundamental security controls that should be implemented throughout the application development lifecycle to prevent similar issues in future versions of the software.