CISA flags data-theft bug in NSA-built OT networking tool
Summary
CISA has issued a warning about a data-theft vulnerability in GrassMarlin, a networking tool developed by the NSA for operational technology (OT). Attackers can exploit this flaw to exfiltrate sensitive information if they possess strong phishing capabilities.
IFF Assessment
FOE
A vulnerability in a tool developed by a national security agency that allows for data theft is bad news for defenders.
Defender Context
Defenders using or managing operational technology (OT) environments should be aware of this vulnerability in the NSA-developed GrassMarlin tool. The focus on phishing skills to exploit this suggests a need for enhanced user awareness training and network segmentation to prevent lateral movement if compromised.