Successful exploitation of this vulnerability could allow an attacker to gain administrative access to DeltaV Smart Switches.
The following versions of DeltaV DCS, a software management platform, include the vulnerable Smart Switch Command Center:
The Smart Switch Command Center does not change the DeltaV Smart Switch management account password upon commissioning as expected, leaving the default password in effect indefinitely.
Benjamin Crosasso of Sanofi reported this vulnerability to Emerson.
Emerson recommends users patch affected products. Details are available within article DSN19003 (KBA# NK-1900-0808). Software patches and DSN19003 are available to users with access to the Emerson Guardian Support Portal at the following link:
<https://guardian.emersonprocess.com/> (Login Required)
To limit exposure to these and other vulnerabilities, Emerson recommends that DeltaV systems and related components be deployed and configured as described in the DeltaV security manual, which can be found in Emerson’s Guardian Support Portal.
NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
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.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to NCCIC for tracking and correlation against other incidents.
No known public exploits specifically target this vulnerability. This vulnerability is not exploitable remotely.
For any questions related to this report, please contact the CISA at:
Toll Free: 1-888-282-0870
For industrial control systems cybersecurity information: https://www.us-cert.gov/ics
or incident reporting: https://www.us-cert.gov/report
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