CVE-2009-2085 in WebSphere Application Server
Summary
by MITRE
The Security component in IBM WebSphere Application Server (WAS) 6.1 before 6.1.0.25 and 7.0 before 7.0.0.5 does not properly handle use of Identity Assertion with CSIv2 Security, which allows remote attackers to bypass intended CSIv2 access restrictions via vectors involving Enterprise JavaBeans (EJB).
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Analysis
by VulDB Data Team • 04/07/2025
The vulnerability described in CVE-2009-2085 represents a critical security flaw within IBM WebSphere Application Server versions 6.1 prior to 6.1.0.25 and 7.0 prior to 7.0.0.5. This issue specifically targets the Security component's handling of Identity Assertion mechanisms when integrated with CSIv2 Security protocols. The flaw manifests in the improper processing of authentication and authorization contexts, creating a significant bypass opportunity for malicious actors seeking to circumvent established security controls.
The technical implementation of this vulnerability stems from insufficient validation and handling of identity assertion data within the CSIv2 (Common Security Interface version 2) framework. When Enterprise JavaBeans are involved in the authentication flow, the system fails to properly enforce access control restrictions that should normally be applied during identity assertion processes. This misconfiguration allows attackers to manipulate the authentication context and gain unauthorized access to protected resources that should be restricted based on proper identity verification.
From an operational perspective, this vulnerability presents a severe risk to organizations relying on IBM WebSphere Application Server for mission-critical applications. Attackers can exploit this weakness to bypass authentication mechanisms and access sensitive data or functionality within EJB-based applications. The impact extends beyond simple unauthorized access as it undermines the fundamental security architecture that protects enterprise applications. This vulnerability is particularly dangerous because it operates at the security layer where identity management and access control decisions are made, potentially allowing attackers to escalate privileges or access restricted application components.
The flaw aligns with CWE-285 (Improper Authorization) and represents a specific instance of insufficient access control validation within security frameworks. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and credential access, specifically targeting the authentication and authorization phases of the attack lifecycle. The vulnerability can be leveraged to perform unauthorized operations against EJB components that are designed to enforce strict access controls, effectively rendering those protections ineffective.
Organizations should implement immediate mitigations including upgrading to the patched versions of IBM WebSphere Application Server 6.1.0.25 and 7.0.0.5, which contain the necessary security fixes. Additionally, administrators should review and validate existing security configurations to ensure proper implementation of CSIv2 protocols and identity assertion mechanisms. Network segmentation and monitoring of authentication-related activities can help detect potential exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to identify similar issues within the broader application architecture, particularly in environments where legacy security components interact with modern authentication frameworks. The vulnerability underscores the importance of proper security protocol implementation and the necessity of thorough testing of authentication and authorization mechanisms within enterprise application servers.