CVE-2020-4325 in Process Federation Server
Summary
by MITRE
The IBM Process Federation Server 18.0.0.1, 18.0.0.2, 19.0.0.1, 19.0.0.2, and 19.0.0.3 Global Teams REST API does not properly shutdown the thread pools that it creates to retrieve Global Teams information from the federated systems. As a consequence, the Java Virtual Machine can't recover the memory used by those thread pools, which leads to an OutOfMemory exception when the Process Federation Server Global Teams REST API is used extensively. IBM X-Force ID: 177596.
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Analysis
by VulDB Data Team • 05/13/2024
The vulnerability identified as CVE-2020-4325 affects IBM Process Federation Server versions 18.0.0.1 through 19.0.0.3, specifically within the Global Teams REST API component. This issue represents a classic resource management flaw that occurs when applications fail to properly release system resources, leading to gradual degradation of system performance and eventual service disruption. The affected system operates within enterprise integration environments where process federation and team coordination are critical functions, making this vulnerability particularly concerning for organizations relying on IBM's process automation platforms.
The technical root cause of this vulnerability lies in improper thread pool management within the Java-based application. When the Global Teams REST API is invoked to retrieve information from federated systems, the application creates thread pools to handle these operations. However, these thread pools are not being properly shut down or cleaned up after use, resulting in thread pool objects remaining in memory indefinitely. This memory leak behavior is characteristic of improper resource lifecycle management and aligns with CWE-404, which specifically addresses improper resource shutdown or release. The Java Virtual Machine's garbage collector cannot reclaim memory occupied by these unreleased thread pools, causing progressive memory consumption that eventually leads to OutOfMemoryError exceptions.
The operational impact of this vulnerability manifests as progressive memory exhaustion in the running Java Virtual Machine, ultimately causing the Process Federation Server to become unresponsive or crash when the Global Teams REST API is heavily utilized. Attackers or system administrators can exploit this by repeatedly invoking the affected API endpoints, causing memory consumption to increase steadily until the JVM runs out of heap space. This behavior creates a denial of service condition that can severely impact business processes relying on federated team coordination and process automation. The vulnerability affects the availability and reliability of the entire Process Federation Server platform, particularly in high-traffic enterprise environments where Global Teams functionality is frequently accessed.
Organizations should implement immediate mitigations including monitoring memory consumption patterns and implementing automated restart procedures for affected systems. The most effective long-term solution involves applying the vendor-provided security patches that address the improper thread pool shutdown behavior. System administrators should also consider implementing API rate limiting and resource monitoring to detect unusual memory consumption patterns before they escalate to critical levels. This vulnerability demonstrates the importance of proper resource management in enterprise applications and aligns with ATT&CK technique T1499.001, which covers resource exhaustion attacks through memory consumption. Organizations should also review their application lifecycle management practices to ensure proper resource cleanup procedures are implemented across all components, particularly in multi-threaded applications that interact with external systems through REST APIs.