CVE-2020-16209 in HARP-IP Developer Kit
Summary
by MITRE • 05/19/2022
A malicious attacker could exploit the interface of the Fieldcomm Group HART-IP (release 1.0.0.0) by constructing messages with sufficiently large payloads to overflow the internal buffer and crash the device, or obtain control of the device.
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Analysis
by VulDB Data Team • 05/26/2022
The vulnerability identified as CVE-2020-16209 represents a critical buffer overflow flaw within the Fieldcomm Group HART-IP communication interface version 1.0.0.0. This device operates within industrial automation environments where reliable communication between field devices and control systems is paramount for operational continuity. The HART-IP interface serves as a bridge between traditional HART protocol devices and modern IP-based networks, making it a crucial component in process control systems. The vulnerability specifically manifests when the interface receives malformed network messages containing oversized payloads that exceed the allocated buffer space within the device's memory management structure. This type of flaw falls under the CWE-121 buffer overflow category, which is classified as a fundamental memory safety issue that has been consistently identified as one of the most prevalent and dangerous classes of vulnerabilities in industrial control systems. The attack vector involves a remote malicious actor who can craft specially designed network packets that deliberately exceed buffer boundaries, causing the device to behave unpredictably.
The technical exploitation of this vulnerability demonstrates a classic stack-based buffer overflow scenario where insufficient input validation allows an attacker to overwrite adjacent memory locations within the device's execution environment. When the oversized payload is processed by the HART-IP interface, the buffer overflow can lead to arbitrary code execution or complete system crash, effectively rendering the device inoperable within the industrial network. The impact extends beyond simple service disruption as this vulnerability could enable attackers to gain unauthorized control over the device, potentially allowing them to manipulate process control parameters, disrupt production operations, or even compromise the broader industrial control network. The device's exposure to network-based attacks means that attackers do not require physical access or specialized equipment to exploit this weakness, making it particularly concerning for operational technology environments where security boundaries are often less strictly enforced than in traditional IT environments. This vulnerability aligns with ATT&CK technique T1210 known as "Exploitation of Remote Services" and represents a significant threat to industrial network security.
The operational implications of this vulnerability are severe for organizations relying on Fieldcomm Group HART-IP interfaces for their process control infrastructure. A successful exploitation could result in unplanned system downtime, production losses, and potential safety hazards in environments where precise control of industrial processes is critical. The vulnerability's remote exploitability means that attackers can target these devices from outside the organization's network perimeter, potentially allowing them to compromise critical infrastructure without requiring physical presence or insider access. Organizations may face regulatory compliance issues if their industrial control systems are found to be vulnerable to such attacks, particularly in industries governed by standards such as NIST SP 800-82 or IEC 62443. The vulnerability also demonstrates the broader challenge facing industrial control systems where legacy devices often lack modern security features and are frequently exposed to network-based threats. Mitigation strategies should include immediate firmware updates from Fieldcomm Group, network segmentation to isolate these devices, and implementation of intrusion detection systems specifically designed to identify anomalous network traffic patterns that might indicate exploitation attempts. The vulnerability highlights the importance of maintaining up-to-date security patches for industrial equipment and the need for comprehensive vulnerability management programs that address both IT and OT environments.