CVE-2006-4376 in Eichhorn Portal
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Guder und Koch Netzwerktechnik Eichhorn Portal allow remote attackers to inject arbitrary web script or HTML via unspecified vectors, possibly including the (1) profil_nr and (2) sprache parameters in the main portion of the portal, the (3) suchstring field in suchForm in the main portion of the portal, the (4) GaleryKey and (5) Breadcrumbs parameters in the gallerie module, and the (6) GGBNSaction parameter in the ggbns module.
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Analysis
by VulDB Data Team • 09/21/2017
The vulnerability identified as CVE-2006-4376 represents a critical cross-site scripting flaw within the Guder und Koch Netzwerktechnik Eichhorn Portal software, exposing multiple attack vectors that enable remote adversaries to execute malicious scripts in the context of victim browsers. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically targeting the web application's input validation mechanisms that fail to properly sanitize user-supplied data before rendering it within web pages. The affected portal software operates as a content management system that processes user inputs through various modules, creating multiple entry points for malicious code injection.
The technical exploitation of this vulnerability occurs through several distinct parameter injection points within the portal's architecture. The primary attack vectors include the profil_nr and sprache parameters located in the main portal portion, which allow attackers to inject malicious scripts through the profile number and language selection fields. Additionally, the suchstring field within the suchForm component provides another injection point, while the gallerie module contains vulnerabilities through GaleryKey and Breadcrumbs parameters. The final attack vector targets the GGBNSaction parameter within the ggbns module, demonstrating the widespread nature of the input sanitization failure across different portal components. These vectors collectively represent a comprehensive XSS attack surface that bypasses standard security controls.
The operational impact of this vulnerability extends beyond simple script execution, as it enables attackers to perform session hijacking, steal user credentials, manipulate data, and potentially gain unauthorized access to sensitive portal resources. Attackers can leverage these vulnerabilities to create persistent backdoors within the portal, modify content displayed to legitimate users, and conduct phishing attacks by redirecting users to malicious sites. The vulnerability's presence across multiple modules indicates a fundamental flaw in the application's security architecture rather than isolated incidents, making it particularly dangerous for organizations relying on this portal for business operations. The attack surface spans from basic user interface elements to core portal functionality, providing attackers with multiple pathways to achieve their objectives.
Organizations affected by this vulnerability should implement immediate mitigations including comprehensive input validation and output encoding across all portal parameters, particularly those identified in the attack vectors. The implementation of Content Security Policy headers and proper HTML escaping techniques can significantly reduce the risk of successful exploitation. Additionally, regular security assessments should be conducted to identify similar vulnerabilities in other portal components and ensure that all user inputs are properly sanitized before processing. This vulnerability aligns with ATT&CK technique T1566.001 for credential access through phishing, and T1059.001 for command and scripting interpreter, demonstrating the multi-faceted nature of the threat. The remediation efforts should focus on establishing robust input validation frameworks that prevent malicious code injection at the source while maintaining the portal's functional integrity and user experience.