CVE-2016-4512 in ELCSoft
Summary
by MITRE
Stack-based buffer overflow in ELCSimulator in Eaton ELCSoft 2.4.01 and earlier allows remote attackers to execute arbitrary code via a long packet.
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Analysis
by VulDB Data Team • 02/15/2019
The vulnerability identified as CVE-2016-4512 represents a critical stack-based buffer overflow flaw within the ELCSimulator component of Eaton ELCSoft version 2.4.01 and earlier. This issue resides in the network packet processing functionality of the software, creating a pathway for remote code execution that could be exploited by malicious actors without requiring authentication. The vulnerability stems from insufficient input validation mechanisms that fail to properly bounds-check incoming network data packets before processing them through the simulator's stack-based memory allocation system.
The technical implementation of this vulnerability occurs when the ELCSimulator receives a malformed network packet containing excessive data that exceeds the allocated buffer size on the stack. This condition leads to memory corruption where the excess data overflows into adjacent memory locations, potentially overwriting critical program execution elements such as return addresses, function pointers, or other control data. The stack-based nature of the buffer overflow means that the attacker can manipulate the program's execution flow by carefully crafting the overflow to overwrite the return address on the stack, redirecting execution to malicious code injected within the overflow payload.
From an operational perspective, this vulnerability presents significant risks to organizations utilizing Eaton ELCSoft software, particularly in industrial control environments where these systems manage critical infrastructure operations. The remote exploitation capability means that attackers can potentially compromise systems from outside the network perimeter, making this vulnerability particularly dangerous for industrial networks that may have limited segmentation or monitoring capabilities. The impact extends beyond simple code execution to potentially enable complete system compromise, data exfiltration, or disruption of critical operations within facilities that depend on Eaton's power management solutions.
Security professionals should consider this vulnerability in relation to the CWE-121 stack-based buffer overflow category and its implications within the MITRE ATT&CK framework, particularly under the execution and privilege escalation tactics. The vulnerability aligns with attack patterns involving remote code execution through network protocols, which typically requires network access and specific payload crafting capabilities. Organizations should implement immediate mitigations including software updates to versions containing patches for this vulnerability, network segmentation to limit access to affected systems, and enhanced monitoring of network traffic for suspicious packet patterns that could indicate exploitation attempts. The remediation process should also include comprehensive vulnerability assessments of all industrial control systems to identify similar unsanitized input processing mechanisms that may present comparable risks.
The broader implications of this vulnerability highlight the importance of secure coding practices in industrial software development, particularly regarding input validation and memory management. This flaw demonstrates how seemingly simple network protocol handling can create pathways for sophisticated attacks, emphasizing the need for robust security testing and code review processes in critical infrastructure software development. Organizations should also consider implementing intrusion detection systems that can identify anomalous network traffic patterns consistent with buffer overflow exploitation attempts, as well as establishing incident response procedures specifically tailored to address potential compromises of industrial control systems.