CVE-2017-6037 in LEVI Studio HMI Editor
Summary
by MITRE
A Heap-Based Buffer Overflow issue was discovered in Wecon Technologies LEVI Studio HMI Editor before 1.8.1. This vulnerability causes a buffer overflow when a maliciously crafted project file is run by the system.
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Analysis
by VulDB Data Team • 12/21/2020
The heap-based buffer overflow vulnerability identified as CVE-2017-6037 affects Wecon Technologies LEVI Studio HMI Editor versions prior to 1.8.1, representing a critical security flaw that can be exploited through maliciously crafted project files. This vulnerability resides within the software's handling of project file parsing operations, where insufficient input validation allows attackers to manipulate memory allocation patterns during the processing of specially crafted files. The flaw manifests when the application attempts to write data beyond the allocated buffer boundaries in heap memory, creating conditions that can lead to arbitrary code execution or application crashes. The vulnerability specifically impacts the HMI editor's project file processing functionality, which is commonly used in industrial control systems and SCADA environments where operational technology infrastructure relies on such visualization tools for system monitoring and control.
The technical implementation of this buffer overflow stems from improper memory management practices within the LEVI Studio application's file parsing routine. When processing project files, the software fails to adequately validate the size and structure of incoming data, particularly in scenarios involving variable-length data fields or arrays within the project file format. This deficiency creates opportunities for attackers to craft project files containing oversized data structures that exceed the allocated buffer space, leading to memory corruption. The vulnerability aligns with CWE-121, which describes heap-based buffer overflow conditions, and represents a classic example of insufficient bounds checking in memory management operations. The flaw operates at the application layer and requires user interaction through the execution of malicious project files, making it particularly concerning in environments where users might encounter untrusted project files from external sources or where automated file processing occurs.
The operational impact of CVE-2017-6037 extends significantly within industrial control environments where LEVI Studio HMI Editor is deployed, as these systems often operate in critical infrastructure sectors including manufacturing, energy, and water treatment facilities. Successful exploitation of this vulnerability could enable attackers to execute arbitrary code on systems running the affected software, potentially leading to complete system compromise and unauthorized access to industrial processes. The vulnerability's exploitation requires local user interaction, meaning that an attacker must convince a legitimate user to open a malicious project file, but this attack vector remains particularly dangerous in environments where users may encounter untrusted files or where social engineering tactics are employed. The potential for remote code execution through this vulnerability, combined with the critical nature of industrial control systems, makes this flaw particularly concerning for organizations implementing operational technology security measures.
Mitigation strategies for CVE-2017-6037 primarily focus on immediate software updates and implementation of defensive security controls. Organizations should prioritize upgrading to Wecon Technologies LEVI Studio HMI Editor version 1.8.1 or later, which contains the necessary patches to address the heap-based buffer overflow vulnerability. Additionally, implementing strict file validation procedures and access controls can help reduce the attack surface by limiting user interaction with potentially malicious project files. Security professionals should consider deploying application whitelisting solutions to restrict execution of unauthorized software and implementing network segmentation to isolate critical industrial control systems from general network access. The vulnerability's classification under the ATT&CK framework aligns with techniques involving application execution and privilege escalation, making it important for organizations to maintain comprehensive endpoint protection and monitoring capabilities. Regular security assessments and vulnerability scanning should include verification of software versions and patch status to prevent exploitation of known vulnerabilities in industrial control system environments.