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

Meltdown and Spectre Vulnerabilities (Update I)

Original release date: January 11, 2018 | Last revised: September 11, 2018

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1. EXECUTIVE SUMMARY

This updated alert is a follow-up to the updated alert titled ICS-ALERT-18-011-01 Meltdown and Spectre Vulnerabilities (Update H) that was published July 10, 2018, on the NCCIC/ICS-CERT website.

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):

Please report any issues affecting control systems in critical infrastructure environments to NCCIC.

For details, please see each company’s announcement:

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2. MITIGATIONS

NCCIC is currently coordinating with vendors and security researchers to identify mitigations.

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

NCCIC also provides a section for control systems security recommended practices on the ICS-CERT web page. 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-CERT website in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.


Contact Information

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

Email: NCCICCUSTOMERSERVICE@hq.dhs.gov
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?

The NCCIC continuously strives to improve its products and services. You can help by choosing one of the links below to provide feedback about this product.

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