The Emerson ROC and FloBoss RTU product lines through 2022-05-02 perform insecure filesystem operations. They utilize the ROC protocol (4000/TCP, 5000/TCP) for communications between a master terminal and RTUs. Opcode 203 of this protocol allows a master terminal to transfer files to and from the flash filesystem and carrying out arbitrary file and directory read, write, and delete operations.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-30264
• https://www.cisa.gov/uscert/ics/advisories/icsa-22-223-04
• https://www.forescout.com/blog/