CVE-2020-1952 in IoTDB
Summary
by MITRE
An issue was found in Apache IoTDB .9.0 to 0.9.1 and 0.8.0 to 0.8.2. When starting IoTDB, the JMX port 31999 is exposed with no certification.Then, clients could execute code remotely.
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Analysis
by VulDB Data Team • 10/13/2020
The vulnerability identified as CVE-2020-1952 affects Apache IoTDB versions 0.9.0 through 0.9.1 and 0.8.0 through 0.8.2, representing a critical security flaw that exposes the Java Management Extensions port without proper authentication mechanisms. This issue stems from the default configuration of IoTDB during startup processes where the JMX service listens on port 31999 without implementing any form of access control or authentication. The flaw creates an attack surface that allows any remote client to establish connections to the JMX port and execute arbitrary code on the target system, fundamentally compromising the integrity and confidentiality of the affected environment. This vulnerability directly relates to CWE-284 which addresses improper access control, and specifically targets the weakness of insufficient authentication in network services. The exposure of JMX ports without authentication represents a well-documented pattern in cybersecurity that has been exploited in numerous high-profile incidents where attackers gained unauthorized access to management interfaces.
The technical exploitation of this vulnerability occurs through the inherent design of Java's JMX implementation which provides remote management capabilities for Java applications. When IoTDB initializes, it automatically binds to port 31999 and exposes the standard JMX MBean server interface, allowing remote clients to connect and perform management operations. Since no authentication is required for these connections, attackers can connect directly to the exposed port and leverage the JMX interface to execute commands, modify system properties, or access sensitive information. The attack vector operates entirely through network communication without requiring any local privileges or complex exploitation techniques, making it particularly dangerous as it can be exploited from any location with network access to the affected system. This vulnerability aligns with ATT&CK technique T1059.001 which covers command and scripting interpreter usage, and T1046 which involves network service scanning to identify exposed services.
The operational impact of CVE-2020-1952 extends beyond simple remote code execution to encompass complete system compromise and potential data breaches. Organizations running affected IoTDB versions face significant risks including unauthorized data access, system manipulation, and potential lateral movement within their network infrastructure. The vulnerability affects industrial IoT environments where IoTDB is commonly deployed for time-series data management, making it particularly concerning for critical infrastructure sectors. Attackers can leverage this vulnerability to establish persistent access, escalate privileges, or deploy additional malicious tools. The exposure of the JMX port creates an attack surface that may be combined with other vulnerabilities to achieve more sophisticated compromises. Organizations with multiple IoTDB instances across their infrastructure face compounded risk as a single vulnerable instance can serve as a foothold for broader attacks, potentially leading to complete system compromise and operational disruption.
Mitigation strategies for CVE-2020-1952 require immediate action to address the exposed JMX port vulnerability. The most effective immediate solution involves configuring IoTDB to disable JMX exposure or bind it to localhost only, preventing external access to the management interface. Organizations should update to patched versions of IoTDB where available, as Apache has released updates addressing this specific vulnerability. Network-level protections including firewall rules to block access to port 31999 from external networks provide an additional layer of defense, though this approach is less robust than proper authentication mechanisms. Implementing network segmentation and access control lists can limit exposure to only trusted internal networks while ensuring that the JMX port remains accessible only to authorized management systems. Security monitoring should include detection of unauthorized JMX connections to port 31999, with alerts configured for any external access attempts. The vulnerability also highlights the importance of proper security configuration management and regular security assessments of network services, particularly in industrial environments where operational technology systems may be deployed with default configurations that prioritize ease of use over security. Organizations should implement comprehensive patch management processes to ensure all IoTDB installations remain current with security updates.