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19 lines
1.7 KiB
Plaintext
19 lines
1.7 KiB
Plaintext
# Modbus Protocol version field is incorrect (Modbus version = 0)
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alert modbus any any -> any any (msg:"SURICATA Modbus invalid Protocol version"; app-layer-event:modbus.invalid_protocol_id; sid:2250001; rev:1;)
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# Response (answer) we didn't see a Request for. Could be packet loss.
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alert modbus any any -> any any (msg:"SURICATA Modbus unsolicited response"; app-layer-event:modbus.unsolicited_response; sid:2250002; rev:1;)
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# Malformed request or response. Malformed means length field is wrong
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alert modbus any any -> any any (msg:"SURICATA Modbus invalid Length"; app-layer-event:modbus.invalid_length; sid:2250003; rev:1;)
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# Unit identifier field is incorrect
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alert modbus any any -> any any (msg:"SURICATA Modbus invalid Unit Identifier"; app-layer-event:modbus.invalid_unit_identifier; sid:2250004; rev:1;)
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# Modbus Function code is incorrect
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alert modbus any any -> any any (msg:"SURICATA Modbus invalid Function code"; app-layer-event:modbus.invalid_function_code; sid:2250005; rev:1;)
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# Modbus Request/Response value field is incorrect
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alert modbus any any -> any any (msg:"SURICATA Modbus invalid Value"; app-layer-event:modbus.invalid_value; sid:2250006; rev:1;)
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# Modbus Expception code is incorrect
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alert modbus any any -> any any (msg:"SURICATA Modbus Exception code invalid"; flow:to_client; app-layer-event:modbus.invalid_exception_code; sid:2250007; rev:1;)
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# Value field in Modbus Response does not match with Modbus Request
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alert modbus any any -> any any (msg:"SURICATA Modbus Data mismatch"; flow:to_client; app-layer-event:modbus.value_mismatch; sid:2250008; rev:1;)
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# Request Flood Detected
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alert modbus any any -> any any (msg:"SURICATA Modbus Request flood detected"; flow:to_server; app-layer-event:modbus.flooded; sid:2250009; rev:1;)
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