CVE-2008-0900 in WebLogic Server
Summary
by MITRE
Session fixation vulnerability in BEA WebLogic Server and Express 8.1 SP4 through SP6, 9.2 through MP1, and 10.0 allows remote authenticated users to hijack web sessions via unknown vectors.
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Analysis
by VulDB Data Team • 06/01/2025
The CVE-2008-0900 vulnerability represents a critical session fixation flaw within BEA WebLogic Server and Express versions spanning multiple release lines including 8.1 SP4 through SP6, 9.2 through MP1, and 10.0. This vulnerability specifically affects the authentication and session management mechanisms of the web application server, creating a pathway for remote attackers who have already established authenticated access to manipulate and hijack active user sessions. The session fixation vulnerability occurs when the server fails to properly invalidate or regenerate session identifiers upon successful authentication, allowing an attacker to maintain persistent access to user sessions that were initiated before their compromise.
The technical implementation of this vulnerability stems from the server's insufficient session management protocols during the authentication process. When legitimate users authenticate to the WebLogic server, the system should generate a new, unique session identifier that replaces any previously established session tokens. However, in affected versions, the server maintains the original session identifier or fails to properly invalidate existing sessions, creating a scenario where an attacker who has already obtained a valid session token can reuse it to impersonate the legitimate user. This flaw operates at the application layer and leverages the fundamental weakness in session management where session tokens are not adequately rotated or invalidated upon successful authentication events.
The operational impact of this vulnerability extends beyond simple session hijacking, as it enables attackers to maintain prolonged access to privileged user accounts within the WebLogic environment. Once an attacker successfully exploits this vulnerability, they can perform actions with the privileges of the compromised user, potentially accessing sensitive data, modifying system configurations, or conducting further attacks within the network. The remote nature of this attack means that exploitation does not require physical access to the server or network, making it particularly dangerous for organizations that rely on WebLogic for mission-critical applications. This vulnerability aligns with CWE-384, which specifically addresses session fixation issues in web applications where session identifiers are not properly managed during authentication processes.
Security practitioners should consider this vulnerability in the context of the MITRE ATT&CK framework, particularly under the techniques related to credential access and privilege escalation. The session fixation attack pattern represents a method of maintaining access to compromised systems by leveraging existing authenticated sessions rather than attempting to brute force credentials or exploit other authentication mechanisms. Organizations should implement comprehensive monitoring for unusual session behavior patterns and ensure that their WebLogic deployments are updated to versions that properly address this session management flaw. The vulnerability also highlights the importance of following secure coding practices for session management as outlined in OWASP Top Ten security guidelines, specifically addressing the proper handling of session identifiers and the implementation of secure session regeneration mechanisms.
Mitigation strategies for CVE-2008-0900 should include immediate patching of affected WebLogic Server versions to the latest available security updates from Oracle, which address the session fixation vulnerability through proper session token regeneration. Organizations should also implement network segmentation and access controls to limit the attack surface and reduce the potential impact of successful exploitation. Additionally, monitoring systems should be configured to detect anomalous session behavior patterns, including repeated session usage from different IP addresses or unusual session duration patterns that may indicate session fixation attacks. The implementation of secure session management practices, such as automatic session timeout mechanisms and proper session invalidation upon authentication, should be enforced across all WebLogic deployments to prevent similar vulnerabilities from occurring in the future.