CVE-2018-18996 in LAquis SCADA
Summary
by MITRE
LCDS Laquis SCADA prior to version 4.1.0.4150 allows taking in user input without proper authorization or sanitation, which may allow an attacker to execute remote code on the server.
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Analysis
by VulDB Data Team • 07/06/2023
The vulnerability identified as CVE-2018-18996 affects LCDS Laquis SCADA software versions prior to 4.1.0.4150, representing a critical security flaw that exposes industrial control systems to remote code execution risks. This vulnerability stems from inadequate input validation and authorization mechanisms within the application's handling of user-provided data, creating a pathway for malicious actors to compromise the system's integrity and operational capabilities. The flaw specifically manifests in the software's failure to properly sanitize user input before processing, allowing attackers to inject malicious code that can be executed with elevated privileges on the target server.
The technical implementation of this vulnerability aligns with CWE-20, which describes improper input validation as a fundamental weakness in software design that enables various attack vectors including code injection. The vulnerability's exploitation potential is particularly severe in industrial environments where SCADA systems control critical infrastructure operations, making the impact far-reaching beyond typical enterprise applications. Attackers can leverage this weakness to execute arbitrary commands on the affected server, potentially gaining complete control over the industrial control system and compromising the safety and reliability of operational processes. The lack of proper authorization checks means that unauthorized users can bypass normal access controls and directly interact with system functions that should be restricted to authorized personnel only.
The operational impact of this vulnerability extends beyond immediate system compromise to threaten the broader industrial ecosystem's security posture. When SCADA systems are compromised, attackers can manipulate control processes, disrupt operations, and potentially cause physical damage to equipment or facilities. The vulnerability's remote exploitation capability means that attackers do not require physical access to the site, making the threat more pervasive and difficult to contain. Organizations relying on LCDS Laquis SCADA for critical infrastructure monitoring and control face significant risks including operational disruption, data compromise, and potential safety hazards in environments where automated control systems manage processes such as power generation, water treatment, or manufacturing operations.
Organizations should implement immediate mitigations including applying the vendor's security patches and updates to version 4.1.0.4150 or later, which address the input sanitization and authorization flaws. Network segmentation and access control measures should be strengthened to limit exposure of SCADA systems to untrusted networks, while implementing proper input validation at multiple layers of the application architecture. Security monitoring and intrusion detection systems should be enhanced to detect suspicious activities that may indicate exploitation attempts. The vulnerability's characteristics also align with ATT&CK technique T1059, which covers command and scripting interpreter usage, as attackers can leverage the vulnerability to execute system commands remotely. Additionally, implementing defense-in-depth strategies including regular security assessments, access control reviews, and staff training on industrial cybersecurity best practices will help reduce the overall risk exposure and improve the organization's resilience against similar vulnerabilities.