CVE-2006-2640 in INterneSErvicesLosungen
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in OmegaMw7a.ASP in OMEGA (aka Omegasoft) INterneSErvicesLosungen (INSEL) allows remote attackers to inject arbitrary web script or HTML via the WCE parameter.
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Analysis
by VulDB Data Team • 09/10/2017
The CVE-2006-2640 vulnerability represents a classic cross-site scripting flaw in the OmegaMw7a.ASP component of OMEGA INSEL software, a web application framework developed by Omegasoft. This vulnerability specifically affects the handling of user input through the WCE parameter, creating a persistent security risk that enables remote attackers to execute malicious scripts within the context of other users' browsers. The flaw exists in the server-side processing logic where input validation and output encoding are insufficiently implemented, allowing malicious payloads to be stored and subsequently executed when legitimate users access the affected application.
This vulnerability falls under CWE-79 which specifically addresses Cross-Site Scripting conditions where untrusted data is improperly incorporated into web page content without proper sanitization or encoding. The technical implementation of this flaw demonstrates poor input validation practices where the WCE parameter value is directly processed and rendered in the web response without adequate sanitization measures. Attackers can exploit this by crafting malicious script code within the WCE parameter that gets executed when the page containing the reflected or stored payload is accessed by other users. The vulnerability enables attackers to perform actions such as session hijacking, data theft, defacement, or redirection to malicious sites, all while appearing to originate from legitimate application endpoints.
The operational impact of CVE-2006-2640 extends beyond simple script injection, as it creates a persistent threat vector that can compromise user sessions and sensitive data within the application environment. When exploited, this vulnerability allows attackers to execute arbitrary JavaScript code in the victim's browser context, potentially leading to complete compromise of user accounts and unauthorized access to protected application functionality. The vulnerability is particularly dangerous because it operates at the application layer and can be leveraged to bypass traditional network security controls, as the malicious code executes within the trusted application context. This makes it difficult to detect and mitigate through conventional firewall or network-based security measures, requiring application-level remediation to address the root cause.
From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1531 which involves the use of malicious scripts to compromise user sessions and execute unauthorized actions. The attack surface is particularly concerning for applications handling sensitive user data or administrative functions, as successful exploitation can lead to privilege escalation and broader system compromise. Organizations should implement comprehensive input validation mechanisms, proper output encoding for all dynamic content, and regular security code reviews to prevent similar vulnerabilities from emerging. Mitigation strategies include implementing Content Security Policy headers, sanitizing all user-supplied input through strict validation, and deploying web application firewalls to detect and block malicious payloads. Additionally, regular security assessments and vulnerability scanning should be conducted to identify and remediate similar issues throughout the application lifecycle.