Successful exploitation of this vulnerability could allow arbitrary code execution.
The following versions of ValveLink digital valve controller software are affected:
A vulnerability in the ValveLink software may allow a local, unprivileged, trusted insider to escalate privileges due to insecure configuration parameters.
Emerson Cybersecurity reported this vulnerability to CISA.
Emerson recommends users upgrade the affected products listed below:
ValveLink, v12.0.264 to v13.4.118: Apply upgrade for ValveLink v13.4.123 or higher.
Software upgrades are available to users by contacting an Emerson Impact Partner. AMS, Ovation, and DeltaV users with ValveLink can download the update through the Guardian Support Portal.
To limit exposure to this vulnerability, Emerson recommends immediately deploying and configuring the latest version of ValveLink as described in the ValveLink installation guide.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
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. 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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