CVE-2018-18396 in ThingsPro
Summary
by MITRE
Remote Code Execution in Moxa ThingsPro IIoT Gateway and Device Management Software Solutions version 2.1.
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Analysis
by VulDB Data Team • 04/05/2020
The vulnerability identified as CVE-2018-18396 represents a critical remote code execution flaw affecting Moxa ThingsPro IIoT Gateway and Device Management Software Solutions version 2.1. This issue resides within the industrial internet of things infrastructure, specifically targeting the management and communication capabilities of industrial devices that are crucial for manufacturing and operational technology environments. The vulnerability stems from inadequate input validation and insufficient access controls within the software's web interface and management protocols, creating an exploitable pathway for malicious actors to gain unauthorized system access.
The technical implementation of this vulnerability involves a classic buffer overflow condition within the device management software's handling of specially crafted HTTP requests. Attackers can exploit this flaw by sending malformed payloads through the web management interface, which then triggers a memory corruption issue in the application's processing routines. This buffer overflow allows remote attackers to execute arbitrary code with the privileges of the running application, typically operating with administrative or root-level permissions. The vulnerability is particularly concerning in industrial environments where these gateways often operate with minimal network segmentation and may have direct access to critical control systems.
From an operational perspective, the impact of CVE-2018-18396 extends far beyond simple unauthorized access, potentially enabling complete system compromise and lateral movement within industrial networks. The affected Moxa ThingsPro devices serve as critical communication bridges between field devices and enterprise systems, making them prime targets for attackers seeking to establish persistent access points within operational technology environments. This vulnerability directly aligns with ATT&CK technique T1059.007 for command and script interpreter, and T1078.004 for valid accounts, as attackers can leverage the executed code to establish backdoors and maintain access. The vulnerability affects the broader industrial control systems landscape and demonstrates how IIoT devices often lack proper security considerations in their design and implementation phases.
The security implications of this vulnerability are particularly severe in environments where industrial control systems operate without adequate network monitoring or intrusion detection capabilities. Organizations utilizing Moxa ThingsPro IIoT solutions may find themselves vulnerable to attacks that could potentially disrupt manufacturing operations, compromise sensitive operational data, or even cause physical damage to industrial equipment. The vulnerability's exploitability requires minimal technical skill and can be automated, making it attractive to threat actors seeking to target industrial environments. This flaw directly relates to CWE-121, which addresses stack-based buffer overflow conditions, and highlights the importance of implementing proper input validation and memory management practices in embedded systems and industrial software solutions. Mitigation strategies should include immediate software updates, network segmentation, and enhanced monitoring of management interface traffic to detect potential exploitation attempts.