• Security Notification SN 2019-09-13 01

Solution :

Honeywell has released firmware update packages for all affected products listed above. The package can be downloaded from:

https://mywebtech.honeywell.com/Home

Honeywell recommends users with potentially affected products take the following steps to protect themselves:

• Update firmware of vulnerable devices per this security notification;
• Isolate their system from the Internet or create additional layers of defense to their system from the Internet by placing the affected hardware behind a firewall or into a DMZ; and
• If remote connections to the network are required, consider using a VPN or other means to ensure secure remote connections into the network where the device is located.

More information on this issue can be found in Honeywell Security Notification SN 2019-09-13 02

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on us-cert.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.gov in the Technical Information Paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.

No known public exploits specifically target this vulnerability. High skill level needed to exploit.