CISA is aware of a public report, known as “OT:ICEFALL,” that details vulnerabilities found in multiple operational technology (OT) vendors. CISA is issuing this advisory to provide notice of the reported vulnerabilities and to identify baseline mitigations to reduce risks to these and other cybersecurity attacks. Successful exploitation of this vulnerability could cause file manipulation, remote code execution, or denial-of-service.
The following versions of ControlWave, a programmable controller, are affected:
https://cwe.mitre.org/data/definitions/345.html
Mitigation
Emerson ControlWave firmware updates can be restricted by the following methods:
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability these vulnerabilities. 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 at cisa.gov/ics. Several CISA products detailing cyber defense best 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 at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
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