GE Mark VIe, EX2100e, EX2100e

Risk Summary

Successful exploitation of this vulnerability could allow an attacker to access system data, which could result in escalation of privilege and unauthorized access to the controller.

CVEs (1)

Remediations

• The path traversal vulnerability has been corrected by GE. GE recommends users upgrade to the current version of ControlST software as described in CSB25378, which is available to registered users via the GE Power ServiceNow portal (https://gepowerpac.service-now.com).
• In applications where the controller-hosted web server is not required, GE recommends turning off the web server. For all other applications, GE recommends updating the controller to the latest firmware version available in the current ControlST release.
• With respect to EX2100e, GE recommends that all standalone excitation controls be segmented from other networks using a firewall installed inside the Excitation panels. External communication should be exclusively restricted to only those protocols specifically required for command and control, such as Modbus. Other services including HTTP must be blocked from external access.
• To minimize the risk of exposure to this and any other vulnerabilities, GE recommends a defense-in-depth approach to protecting critical process control equipment. Guidance on technology and best practices to secure GE controllers from cyber attack are provided in the Mark VIe Control Systems Secure Deployment Guide (GEH-6839), which can be requested through GE Technical Support.
• Maintain tight physical access control to all critical controllers.
• Limit network availability to only the most critical needs and implement tight firewall restrictions.
• Disable any unnecessary network related functions or enable only on an as needed basis.

Affected Vendors

Affected Products (4)

Affected Sectors

Energy