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Cisco Security Response: Cisco Smart Install Protocol Misuse

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Cisco Security Response: Cisco Smart Install Protocol Misuse

Response ID: cisco-sr-20170214-smi

Revision 1.0

For Public Release 2017 February 14 16:00  UTC (GMT)

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Summary
=======

Several researchers have reported on the use of Smart Install (SMI) protocol 
messages 
toward Smart Install clients, also known as integrated branch clients (IBC), 
allowing an 
unauthenticated, remote attacker to change the startup-config file and force a 
reload of the 
device, upgrade the IOS image on the device, and execute high-privilege CLI 
commands on 
switches running Cisco IOS and IOS XE Software.

Cisco does not consider this a vulnerability in Cisco IOS, IOS XE, or the Smart 
Install 
feature itself but a misuse of the Smart Install protocol that by design does 
not require 
authentication. Customers who seek more than zero-touch deployment should 
consider deploying 
the Cisco Network Plug and Play solution instead.

Cisco has updated the Smart Install Configuration Guide to include security 
best practices 
regarding the deployment of the Cisco Smart Install feature within customer 
infrastructures:
http://www.cisco.com/c/en/us/td/docs/switches/lan/smart_install/configuration/guide/smart_install/concepts.html#23355

This response is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityResponse/cisco-sr-20170214-smi

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