S7_Read.Variable.Validation

Description

This indicates detection of the S7 Read Variable command by the signature with parameters specified by users.
S7 is a proprietary communication protocol by Siemens. It is run between PLCs of the Siemens S7 family for PLC programming, data exchange, data accessing from SCADA systems and diagnostic purposes.
The configurable parameters are as follow:
Transport Size, value range 1:32
DB Number, value range 0:65535
Address, value range 0:524287

Affected Products

S7 Read Variable

Impact

Unexpected network communication

Technology

Client-Server

Behavior

• Reasonable

Application Dependencies

• S7

Default Ports

• TCP/102