CVE-2012-2607 in Network Controller
Summary
by MITRE
The Johnson Controls CK721-A controller with firmware before SSM4388_03.1.0.14_BB allows remote attackers to perform arbitrary actions via crafted packets to TCP port 41014 (aka the download port).
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Analysis
by VulDB Data Team • 08/10/2024
The Johnson Controls CK721-A controller represents a critical industrial control system component that manages building automation and security functions within enterprise environments. This device operates as part of the broader Johnson Controls ecosystem, which provides integrated solutions for facility management including access control, environmental monitoring, and security systems. The vulnerability exists within the firmware version SSM4388_03.1.0.14_BB and earlier, indicating that manufacturers had not yet addressed this security weakness in their software updates. The controller's exposure to remote attack vectors through TCP port 41014 presents a significant risk to organizations relying on these systems for critical infrastructure protection.
The technical flaw manifests as a lack of proper input validation and authentication mechanisms within the download port functionality. Attackers can craft specially designed packets that exploit insufficient sanitization of incoming data, allowing them to execute arbitrary commands on the target device. This vulnerability falls under the category of remote code execution, where an unauthenticated attacker can gain unauthorized access to the controller's operational capabilities. The flaw essentially provides a backdoor through which malicious actors can manipulate the device's behavior, potentially leading to complete system compromise and unauthorized access to connected building systems. The vulnerability is particularly concerning because it enables attackers to perform actions that could disrupt critical operations or provide persistent access to facilities.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it can lead to complete system compromise and potential disruption of building security and automation services. Organizations using the CK721-A controller may experience unauthorized access to their security infrastructure, including access control systems that could allow unauthorized entry to facilities. The vulnerability could also enable attackers to modify system configurations, disable security features, or manipulate environmental controls, potentially creating safety hazards or security breaches. The remote nature of the attack means that adversaries can exploit this weakness from anywhere on the network, making it particularly dangerous for organizations with limited network segmentation or monitoring capabilities. This vulnerability directly relates to CWE-119 which describes weaknesses in memory handling, and represents a classic example of improper input validation leading to code execution.
Mitigation strategies for this vulnerability require immediate firmware updates from Johnson Controls to address the specific security flaw in the download port implementation. Organizations should also implement network segmentation to isolate these controllers from general network traffic, limiting potential attack vectors. The implementation of network access controls and firewall rules specifically targeting TCP port 41014 can help prevent unauthorized access attempts. Additionally, organizations should conduct comprehensive security assessments of their industrial control systems to identify other potentially vulnerable devices within their infrastructure. Regular monitoring for suspicious network activity on the affected port and implementing intrusion detection systems can help identify exploitation attempts. The vulnerability also highlights the importance of secure configuration management and the need for organizations to maintain up-to-date security patches for all industrial control system components, as outlined in the ATT&CK framework's methodology for targeting industrial control systems. Network administrators should also consider implementing secure remote access solutions with strong authentication mechanisms to prevent unauthorized access to critical infrastructure components.