CVE-2018-1683 in WebSphere Application Server Liberty
Summary
by MITRE
IBM WebSphere Application Server Liberty could allow a remote attacker to obtain sensitive information, caused by the failure to encrypt ORB communication. IBM X-Force ID: 145455.
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Analysis
by VulDB Data Team • 05/19/2023
IBM WebSphere Application Server Liberty contains a critical vulnerability that enables remote attackers to obtain sensitive information through insufficient encryption of Object Request Broker (ORB) communication. This flaw resides in the server's handling of distributed object communication protocols where the ORB component fails to properly encrypt data transmitted between application components and the server. The vulnerability stems from the application server's default configuration that does not enforce mandatory encryption for ORB communications, leaving sensitive data exposed during transmission. Attackers can exploit this weakness to intercept and decrypt communications that should remain protected, potentially accessing authentication credentials, session data, and other confidential information exchanged through the ORB mechanism. The issue represents a significant security gap in the server's network security posture and demonstrates poor implementation of secure communication practices within enterprise application servers.
The technical exploitation of this vulnerability occurs when remote attackers can establish connections to the Liberty server's ORB endpoints without proper encryption enforcement. The flaw specifically affects the server's CORBA (Common Object Request Broker Architecture) communication layer where object references and method calls are transmitted between distributed components. Without proper encryption, attackers can perform man-in-the-middle attacks or passive network monitoring to capture and analyze the unencrypted ORB traffic. This vulnerability directly maps to CWE-319 - Cryptographic Issues, which addresses the exposure of sensitive information due to inadequate cryptographic protection. The attack vector allows for remote information disclosure through network traffic interception, making it particularly dangerous in environments where the server communicates across untrusted networks or when the ORB endpoints are accessible from external networks.
The operational impact of this vulnerability extends beyond simple information disclosure to potentially enable more sophisticated attacks within the application environment. An attacker who successfully exploits this vulnerability could gain access to session tokens, authentication information, and other sensitive data that would otherwise remain protected during ORB communication. This exposure creates opportunities for privilege escalation attacks, session hijacking, and further lateral movement within the network. The vulnerability affects organizations using IBM WebSphere Application Server Liberty in production environments where security is paramount, particularly in financial services, healthcare, and government sectors where data protection regulations mandate secure communication practices. The attack impacts the confidentiality and integrity of distributed applications relying on the Liberty server's ORB functionality, potentially violating compliance requirements under standards such as PCI DSS, HIPAA, and SOX.
Organizations should implement immediate mitigations including enabling mandatory encryption for all ORB communications through proper server configuration and certificate management. The recommended approach involves configuring the Liberty server to require SSL/TLS encryption for all ORB endpoints and ensuring that proper certificate validation is enforced. Network administrators should also implement firewall rules to restrict access to ORB endpoints and monitor for unusual traffic patterns that might indicate exploitation attempts. Applying the latest security patches from IBM is essential as these updates typically include fixes for cryptographic configuration issues and improved default security settings. Additionally, organizations should conduct regular security assessments of their Liberty server configurations to ensure that encryption requirements are properly enforced and that no unauthorized access paths exist for ORB communication. The vulnerability aligns with ATT&CK technique T1071.004 - Application Layer Protocol: DNS, which addresses the use of application protocols for data exfiltration, though in this case the threat involves unencrypted communication rather than DNS tunneling specifically. Organizations should also consider implementing network segmentation and monitoring solutions to detect and prevent unauthorized access to the vulnerable ORB endpoints, ensuring comprehensive protection against both current and potential future exploitation attempts.