This signature mitigates a vulnerability by design in the Ethernet/IP protocol implementation of the Rockwell ControlLogix industrial controller. A description of the vulnerability is found at:http://www.us-cert.gov/control_systems/pdf/ICS-Alert-12-020-02A.pdfClass 0x64 in ControlLogix supports the stop service, i.e., service code 0x07. Invocation of that service stops the CPU and thus takes it to an idle state, which prevents subsequent requests from being processed. The fault may be cleared manually by turning the regular key on the device from RUN to PROG twice.You are entitled to use this signature only if you have purchased an IPS SCADA Signature License.
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