A KVM switch, which is attached to ISs of different classification levels, must have connections for peripherals, other than the keyboard, video monitor, or mouse, blocked with tamper resistant/evident seals.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-6704	KVM02.010.00	SV-6889r2_rule	DCBP-1	Medium

Description
It will be assumed that KVM switches that can switch peripherals other than the keyboard, video monitor, and mouse, that are attached to ISs of differing classification levels, and that do not have the connectors for the additional peripherals blocked with tamper resistant/evident seals, have been tampered with and have been used to transfer data between ISs of different classifications levels until proven otherwise. If data is transferred between ISs of different classification levels the data has been compromised and the receiving IS has been compromised. When the KVM switch is attached to ISs of different classification levels, the ISSO or SA will ensure the connectors for additional peripherals are blocked with tamper resistant/evident seals.

Description

It will be assumed that KVM switches that can switch peripherals other than the keyboard, video monitor, and mouse, that are attached to ISs of differing classification levels, and that do not have the connectors for the additional peripherals blocked with tamper resistant/evident seals, have been tampered with and have been used to transfer data between ISs of different classifications levels until proven otherwise. If data is transferred between ISs of different classification levels the data has been compromised and the receiving IS has been compromised. When the KVM switch is attached to ISs of different classification levels, the ISSO or SA will ensure the connectors for additional peripherals are blocked with tamper resistant/evident seals.

STIG	Date
Keyboard Video and Mouse Switch STIG	2015-06-30

Details

Check Text ( C-2688r2_chk )
The reviewer will view the KVM switch, which is attached to ISs of different classification levels, to verify all connections for peripherals other than a keyboard, video monitor or mouse are blocked with tamper resistant/evident seals. If additional connections are not blocked with tamper resistant/evident seals, this is a finding.

Fix Text (F-6299r2_fix)
Obtain tamper resistant/evident seals and apply them to any open connections on the KVM. Tamper resistant/evident seals are available from Protective Technologies: ptproducts@radium.ncsc.mil.