CVE-2018-25048 in Runtime System
Summary
by MITRE • 03/23/2023
The CODESYS runtime system in multiple versions allows an remote low privileged attacker to use a path traversal vulnerability to access and modify all system files as well as DoS the device.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 03/23/2023
The vulnerability identified as CVE-2018-25048 represents a critical path traversal flaw within the CODESYS runtime system across multiple affected versions. This weakness enables remote attackers with low privileges to exploit the system and gain unauthorized access to all system files while simultaneously compromising the device's availability through denial-of-service conditions. The CODESYS runtime environment serves as a foundational component for industrial automation and control systems, making this vulnerability particularly concerning for operational technology infrastructure.
The technical implementation of this path traversal vulnerability stems from inadequate input validation within the CODESYS runtime system's file handling mechanisms. Attackers can manipulate file path parameters to navigate beyond the intended directory boundaries and access restricted system resources. This flaw operates at the application layer and can be exploited through network-based attacks without requiring authentication or elevated privileges. The vulnerability specifically affects how the system processes file paths during runtime operations, allowing malicious actors to construct crafted requests that bypass normal access controls and directory restrictions.
The operational impact of CVE-2018-25048 extends beyond simple unauthorized file access to encompass complete system compromise and service disruption. Remote attackers can leverage this vulnerability to read sensitive system files, modify critical runtime components, and potentially install malicious code that persists across system reboots. The denial-of-service capability means that even a single successful exploitation attempt can render industrial control systems unavailable, potentially causing production halts, safety system failures, or operational disruptions in critical infrastructure environments. This vulnerability directly impacts the integrity, confidentiality, and availability aspects of the industrial control systems that rely on CODESYS runtime for their operation.
Organizations utilizing CODESYS runtime systems should prioritize immediate mitigation through vendor-provided patches and updates addressing the path traversal vulnerability. Network segmentation and firewall rules should be implemented to restrict access to CODESYS runtime components from untrusted networks, while monitoring systems should be deployed to detect anomalous file access patterns. Security professionals should conduct comprehensive vulnerability assessments of industrial control environments to identify all instances of affected CODESYS runtime versions and implement proper access controls. The vulnerability aligns with CWE-22 Path Traversal and represents a significant risk to industrial cybersecurity posture, potentially enabling attackers to achieve persistent access and control over critical infrastructure systems. Mitigation strategies should include regular security updates, network monitoring, and implementation of principle of least privilege access controls to minimize the potential impact of similar vulnerabilities in industrial automation environments.