CVE-2013-4112 in JGroup
Summary
by MITRE
The DiagnosticsHandler in JGroup 3.0.x, 3.1.x, 3.2.x before 3.2.9, and 3.3.x before 3.3.3 allows remote attackers to obtain sensitive information (diagnostic information) and execute arbitrary code by reusing valid credentials.
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Analysis
by VulDB Data Team • 01/07/2022
The vulnerability identified as CVE-2013-4112 represents a critical security flaw within the JGroups communication library ecosystem, specifically affecting versions 3.0.x through 3.3.2 and 3.2.x through 3.3.2. This issue resides in the DiagnosticsHandler component which is designed to provide diagnostic information about the cluster state and configuration. The vulnerability stems from improper authentication and authorization mechanisms that allow unauthenticated remote attackers to exploit valid credentials for unauthorized access to sensitive diagnostic data and potentially execute arbitrary code on affected systems. The flaw is particularly concerning as it leverages existing valid credentials rather than requiring new authentication attempts, making it more difficult to detect and prevent through standard security monitoring measures.
The technical implementation of this vulnerability involves the DiagnosticsHandler component failing to properly validate the context and intent of credential reuse requests. When valid credentials are presented, the system does not adequately verify whether the requesting entity has legitimate authorization to access diagnostic information or perform code execution operations. This represents a classic case of insufficient authorization control where the system assumes that valid credentials automatically grant full access to all diagnostic functions. The vulnerability can be categorized under CWE-285, which deals with insufficient authorization, and aligns with ATT&CK technique T1078 for valid accounts and T1059 for command and scripting interpreter. The flaw essentially creates a backdoor pathway where legitimate authentication tokens can be repurposed for malicious activities beyond their intended scope.
The operational impact of CVE-2013-4112 extends far beyond simple information disclosure, as it provides attackers with the capability to execute arbitrary code on affected systems. This elevation of privilege allows threat actors to gain complete control over the cluster nodes, potentially leading to data breaches, system compromise, and disruption of critical services. Organizations using JGroups for clustering and distributed computing environments face significant risk exposure, as the vulnerability can be exploited remotely without requiring additional authentication mechanisms or complex attack vectors. The diagnostic information that becomes accessible includes sensitive cluster configuration details, node states, communication patterns, and potentially system-level information that could be leveraged for further attacks. This vulnerability directly impacts the confidentiality, integrity, and availability of distributed systems relying on affected JGroups versions.
Mitigation strategies for this vulnerability require immediate patching of affected JGroups versions to 3.2.9 or 3.3.3, which contain the necessary security fixes. Organizations should also implement network segmentation and access controls to limit exposure of diagnostic endpoints to trusted networks only. The security architecture should enforce strict authorization checks for all diagnostic requests, ensuring that credential reuse is properly validated against the specific operations being requested. Additional defensive measures include disabling unused diagnostic endpoints, implementing robust monitoring for unusual diagnostic access patterns, and conducting regular security assessments of cluster configurations. From a compliance perspective, this vulnerability affects organizations that must adhere to standards such as iso 27001 and nist cybersecurity framework, as it represents a significant gap in access control and privilege management. The remediation process should also include comprehensive testing to ensure that the patched versions maintain expected functionality while addressing the authorization bypass vulnerability.