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V-242575

CAT I (High)

The Cisco ISE must use TLS 1.2, at a minimum, to protect the confidentiality of information passed between the endpoint agent and the Cisco ISE. This is This is required for compliance with C2C Step 1.

Rule ID

SV-242575r812732_rule

STIG

Cisco ISE NAC Security Technical Implementation Guide

Version

V2R3

CCIs

CCI-000068

Discussion

The agent may pass information about the endpoint to the Cisco ISE, which may be sensitive. Using older unauthorized versions or incorrectly configuring protocol negotiation makes the gateway vulnerable to known and unknown attacks that exploit vulnerabilities in this protocol.

Check Content

If DoD is not at C2C Step 1 or higher, this is not a finding.

Verify that only TLS 1.2 is enabled. 

From the Web Admin portal: 
1. Navigate to Administration >> System >> Settings >> Security Settings.
2. Ensure "Allow TLS1.0", "Allow TLS1.1", and "Allow legacy unsafe TLS renegotiation for ISE as a client" are unchecked.

If TLS 1.0 or 1.1 is enabled, this is a finding.

Fix Text

Configure ISE so that only TLS 1.2 is enabled: 

From the Web Admin portal:
1. Navigate to Administration >> System >> Settings >> Security Settings.
2. Ensure "Allow TLS1.0", "Allow TLS1.1", and "Allow legacy unsafe TLS renegotiation for ISE as a client" are unchecked.