Modicon PLC CPU Type SNMP Request Model Type Remote Disclosure

This script is Copyright (C) 2006-2012 Tenable Network Security, Inc.


Synopsis :

It is possible to obtain the model information of a Modicon PLC using
an SNMP Get Request.

Description :

The Modicon Quantum, Premium, and Momentum brands of PLC's have a
private SNMP MIB that is available on the Internet. The type of
Modicon PLC has been obtained via an SNMP Get Request. The response
will be the model type such as 'Quantum'.

An attacker may use this information to profile the SCADA system and
investigate known vulnerabilities of the PLC.

Solution :

Change default community strings to a value not easily guessed and
filter access to the SNMP port.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N)

Family: SCADA

Nessus Plugin ID: 23823 ()

Bugtraq ID:

CVE ID: