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U.S. Department of Homeland Security Seal. ICS-CERT. Industrial Control Systems Cyber Emergency Response Team.

Alert (ICS-ALERT-18-011-01F)

Meltdown and Spectre Vulnerabilities (Update F)

Original release date: January 11, 2018 | Last revised: March 01, 2018

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This updated alert is a follow-up to the updated alert titled ICS-ALERT-18-011-01E Meltdown and Spectre Vulnerabilities that was published February 22, 2018, on the NCCIC/ICS-CERT web site.

NCCIC is referencing CERT/CC’s vulnerability note VU#584653 CPU hardware vulnerable to side-channel attacks to enhance the awareness of critical infrastructure asset owners/operators and to identify affected product vendors that have contacted ICS-CERT for help disseminating customer notifications/recommendations to mitigate the risk associated with cache side-channel attacks known as Meltdown and Spectre. Exploitation of these vulnerabilities may allow unauthorized disclosure of information.

CVE-2017-5753, CVE-2017-5715, and CVE-2017-5754 have been assigned to these vulnerabilities.

The following product vendors have reported that they support products that use affected CPUs and have issued customer notifications with recommendations for users (NCCIC will update the list of vendors that have released customer notifications as additional information becomes available):

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NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to taking defensive measures.

NCCIC also provides a control systems recommended practices page on the ICS-CERT website. Several recommended practices are available for reading or download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

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

Contact Information

For any questions related to this report, please contact the NCCIC at:

Toll Free: 1-888-282-0870

For industrial control systems cybersecurity information:  http://ics-cert.us-cert.gov 
or incident reporting:  https://ics-cert.us-cert.gov/Report-Incident?

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