CVE-2020-7554 in IGSS Definition
Summary
by MITRE • 11/20/2020
A CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability exists in IGSS Definition (Def.exe) version 14.0.0.20247 that could cause Remote Code Execution when malicious CGF (Configuration Group File) file is imported to IGSS Definition.
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Analysis
by VulDB Data Team • 12/09/2020
The vulnerability identified as CVE-2020-7554 represents a critical memory safety issue classified under CWE-119, which specifically addresses improper restriction of operations within the bounds of a memory buffer. This flaw manifests in the IGSS Definition software component known as Def.exe, version 14.0.0.20247, where insufficient input validation and buffer management mechanisms create exploitable conditions that can lead to remote code execution. The vulnerability arises during the processing of configuration group files with the .cgf extension, which are integral to the software's operational configuration and system management functions.
The technical exploitation of this vulnerability occurs when a maliciously crafted CGF file is imported into the IGSS Definition environment. The flaw stems from inadequate bounds checking during the parsing and processing of these configuration files, allowing an attacker to manipulate memory operations beyond the intended buffer boundaries. This improper memory restriction enables attackers to overwrite adjacent memory locations, potentially corrupting critical program execution flow or injecting malicious code that can be executed within the context of the running Def.exe process. The vulnerability's remote execution capability means that attackers do not need physical access to the system, as the malicious file can be delivered through various network-based attack vectors.
The operational impact of this vulnerability extends beyond simple exploitation, as it provides attackers with a potential foothold for further system compromise within industrial control systems environments where IGSS Definition is typically deployed. The affected software serves industrial automation and control systems, making this vulnerability particularly concerning for critical infrastructure sectors. When exploited successfully, the remote code execution capability allows attackers to gain unauthorized access to the system, potentially leading to complete system compromise, data exfiltration, or disruption of industrial processes. The vulnerability's presence in a configuration management tool means that successful exploitation could enable attackers to modify system configurations, potentially causing operational disruptions or creating backdoors for persistent access.
Organizations should implement multiple layers of defense to mitigate this vulnerability, beginning with immediate software updates and patches provided by the vendor to address the buffer overflow conditions. Network segmentation and access controls should be strengthened to limit the potential attack surface, particularly for systems running IGSS Definition software. Regular security assessments and vulnerability scanning should be conducted to identify any unpatched systems within the network infrastructure. The mitigation strategies should align with industry standards including the NIST Cybersecurity Framework and ISO/IEC 27001 security controls, with particular attention to the principle of least privilege and secure configuration management. Additionally, implementing network monitoring and intrusion detection systems can help identify potential exploitation attempts through anomalous file import activities or unusual network communications patterns that may indicate successful exploitation attempts.