ICS Advisories

Risk evaluation

Schneider Electric is aware of multiple vulnerabilities in its EcoStruxure™ Control Expert , EcoStruxure™ Process Expert and Modicon M340, M580 PLCs (Programmable Logic Controllers). Modicon PLCs control and monitor industrial operations. EcoStruxure™ Control Expert is the common programming, debugging and operating software for Modicon PLCs. EcoStruxure™ Process Expert DCS is a single automation system to engineer, operate, and maintain an entire plant Infrastructure. Failure to apply the remediations provided below may risk unauthorized access to your PLC, which could result in the possibility of denial of service and loss of confidentiality, integrity of the controller. Note regarding vulnerability details: The severity of vulnerabilities was calculated using the CVSS Base metrics in version 3.1 (CVSS v3.1) without incorporating the Temporal and Environmental metrics. Schneider Electric recommends that customers score the CVSS Environmental metrics, which are specific to end-user organizations, and consider factors such as the presence of mitigations in that environment. Environmental metrics may refine the relative severity posed by the vulnerabilities described in this document within a customer’s environment

Mitigation summary

SV3.60 of Modicon M340 firmware includes a fix for this vulnerability and is available for download here: https://www.se.com/ww/en/product-range/1468- modicon-m340