CVE-2008-0176 in CIMPLICITY
Summary
by MITRE
Heap-based buffer overflow in w32rtr.exe in GE Fanuc CIMPLICITY HMI SCADA system 7.0 before 7.0 SIM 9, and earlier versions before 6.1 SP6 Hot fix - 010708_162517_6106, allow remote attackers to execute arbitrary code via unknown vectors.
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Analysis
by VulDB Data Team • 01/12/2025
The vulnerability identified as CVE-2008-0176 represents a critical heap-based buffer overflow in the w32rtr.exe component of GE Fanuc CIMPLICITY HMI SCADA system version 7.0 prior to SIM 9 and earlier versions before 6.1 SP6 Hot fix - 010708_162517_6106. This flaw exists within the industrial control system environment where the w32rtr.exe process serves as a routing component responsible for handling communication between different system modules. The vulnerability stems from inadequate input validation and memory management practices within the application's heap allocation mechanisms, creating conditions where maliciously crafted input data can overwrite adjacent memory locations.
The technical exploitation of this vulnerability occurs through unknown attack vectors that likely involve sending specially crafted data packets or commands to the affected system. The heap-based nature of the buffer overflow indicates that the vulnerability manifests when the application attempts to allocate memory on the heap and subsequently writes beyond the allocated buffer boundaries. This type of vulnerability falls under CWE-121 heap-based buffer overflow category and aligns with ATT&CK technique T1190 for exploiting vulnerabilities in software. The vulnerability's remote execution capability means that attackers do not require physical access to the system, making it particularly dangerous in industrial environments where network connectivity is essential for system operations.
The operational impact of this vulnerability extends beyond simple code execution, potentially compromising the integrity and availability of critical infrastructure monitoring and control systems. In industrial control environments, the ability to execute arbitrary code on a SCADA system can lead to complete system compromise, allowing attackers to manipulate industrial processes, access sensitive operational data, or disrupt critical manufacturing operations. The vulnerability affects the core HMI functionality of CIMPLICITY systems, which are widely deployed in critical infrastructure sectors including energy, water treatment, and manufacturing facilities. Attackers could leverage this vulnerability to gain unauthorized access to industrial control systems, potentially causing operational disruptions, safety hazards, or financial losses.
Mitigation strategies for this vulnerability require immediate patching of affected systems with the available security updates from GE Fanuc, specifically the SIM 9 release for version 7.0 and the SP6 Hot fix for version 6.1. Network segmentation and access controls should be implemented to limit exposure of these critical systems to untrusted networks. Additionally, monitoring for unusual network traffic patterns or system behavior that might indicate exploitation attempts should be deployed. The vulnerability highlights the importance of maintaining up-to-date security patches in industrial control environments and demonstrates how legacy systems can remain vulnerable to exploitation for extended periods. Organizations should conduct comprehensive vulnerability assessments of their industrial control systems to identify other potential vulnerabilities that could be exploited in similar fashion. The incident underscores the necessity of implementing robust security practices in critical infrastructure environments where the stakes of system compromise are significantly higher than typical enterprise environments.