Rockwell Automation Allen-Bradley CompactLogix and Compact GuardLogix (Update A)

Risk Summary

Successful exploitation of this vulnerability could result in a denial-of-service condition. As a result, the controller goes into a Major Non-Recoverable Fault (MNRF) state, which is considered safe. However, recovery requires the user to download the application program again.

CVEs (1)

Remediations

• Rockwell Automation recommends users with affected controllers apply firmware revision FRN (31.011 or later) to the affected products. The download can be obtained at the following location:
• Block all traffic to Ethernet/IP or other CIP protocol-based devices from outside the Manufacturing Zone by blocking or restricting access to Port 2222/TCP and UDP and Port 44818/TCP and UDP using proper network infrastructure controls, such as firewalls, UTM devices, or other security appliances. For more information on TCP/UDP ports used by Rockwell Automation Products, see Knowledgebase Article ID 898270 available at: https://rockwellautomation.custhelp.com/app/answers/detail/a_id/898270/page/1 (login required).
• Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.
• When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize that VPN is only as secure as the connected devices.
• When possible, users are recommended to apply the firmware revision in conjunction with the general security guidelines to employ multiple strategies simultaneously.
• For more information on this vulnerability and more detailed mitigation instructions, please access an account in order to view Rockwell Automation's advisory at the following location:

Affected Vendors

Affected Products (6)

Affected Sectors

Chemical, Critical Manufacturing, Food and Agriculture, Transportation Systems, Water and Wastewater Systems