CVE-2012-1805 in H0-ECOM
Summary
by MITRE
Buffer overflow in the ECOM Ethernet module in Koyo H0-ECOM, H0-ECOM100, H2-ECOM, H2-ECOM-F, H2-ECOM100, H4-ECOM, H4-ECOM-F, and H4-ECOM100 allows remote attackers to execute arbitrary code via long strings in unspecified parameters.
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Analysis
by VulDB Data Team • 12/01/2021
The vulnerability identified as CVE-2012-1805 represents a critical buffer overflow flaw within the ECOM Ethernet module of several Koyo industrial automation products including the H0-ECOM, H0-ECOM100, H2-ECOM, H2-ECOM-F, H2-ECOM100, H4-ECOM, H4-ECOM-F, and H4-ECOM100 models. This issue stems from inadequate input validation mechanisms that fail to properly handle excessively long strings passed to unspecified parameters within the Ethernet communication module. The flaw exists at the application layer of the industrial control systems where network communications are processed, creating a pathway for malicious actors to exploit the system's memory management vulnerabilities. The affected devices operate within industrial environments where network connectivity is essential for remote monitoring and control operations, making this vulnerability particularly dangerous as it could be exploited from remote locations without physical access to the equipment.
The technical implementation of this buffer overflow vulnerability occurs when the ECOM Ethernet module processes incoming network data that contains strings exceeding the allocated buffer space. This condition creates memory corruption that can be leveraged by remote attackers to overwrite adjacent memory locations, potentially including return addresses, function pointers, or other critical program variables. The unspecified parameters within the module's communication protocol provide multiple attack vectors where malicious input can be injected, making the exploitation surface broader than typical buffer overflow scenarios. The vulnerability aligns with CWE-121, which describes heap-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite memory locations, and also relates to CWE-125, which covers out-of-bounds read conditions that can result from improper input validation. This type of vulnerability typically enables attackers to execute arbitrary code with the privileges of the affected process, often resulting in complete system compromise.
The operational impact of CVE-2012-1805 extends beyond simple code execution to encompass potential industrial control system disruption and safety hazards. In industrial environments where these devices are deployed for critical infrastructure monitoring and control, a successful exploitation could lead to unauthorized access to control systems, data manipulation, or complete system takeover. The remote exploit capability means that attackers do not require physical access to the industrial equipment, potentially enabling large-scale attacks against critical infrastructure networks. The vulnerability affects multiple variants of the Koyo ECOM modules, suggesting a systemic design flaw rather than isolated component issues, which increases the potential attack surface across various industrial automation deployments. This scenario aligns with ATT&CK technique T1203, which describes exploitation of remote services, and T1059, which covers execution through command and scripting interpreters, both of which can be facilitated by buffer overflow vulnerabilities in industrial control systems.
Mitigation strategies for this vulnerability require immediate attention from system administrators and industrial security teams responsible for protecting critical infrastructure. The primary recommendation involves applying vendor-provided security patches or firmware updates that address the specific buffer overflow conditions in the ECOM Ethernet module implementations. Network segmentation and access controls should be implemented to limit exposure of these industrial devices to untrusted networks, using firewalls and network access control lists to restrict communication to authorized endpoints only. Regular security assessments and penetration testing should be conducted to identify additional vulnerabilities within industrial control system environments, particularly focusing on legacy systems that may contain similar buffer overflow conditions. Organizations should also implement network monitoring solutions capable of detecting anomalous communication patterns that might indicate exploitation attempts, and establish incident response procedures specifically tailored for industrial control system security breaches. The vulnerability demonstrates the importance of maintaining up-to-date security practices in industrial environments, where the consequences of exploitation can extend beyond traditional information technology concerns into physical safety and operational continuity domains.