For accounts using password authentication, the Cisco ISE must implement replay-resistant authentication mechanisms for network access to privileged accounts.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-242642	CSCO-NM-000370	SV-242642r714236_rule		Medium

Description
A replay attack may enable an unauthorized user to gain access to the application. Authentication sessions between the authenticator and the application validating the user credentials must not be vulnerable to a replay attack. An authentication process resists replay attacks if it is impractical to achieve a successful authentication by recording and replaying a previous authentication message. Techniques used to address this include protocols using nonces (e.g., numbers generated for a specific one-time use) or challenges (e.g., TLS, WS_Security). Additional techniques include time-synchronous or challenge-response one-time authenticators.

Description

A replay attack may enable an unauthorized user to gain access to the application. Authentication sessions between the authenticator and the application validating the user credentials must not be vulnerable to a replay attack. An authentication process resists replay attacks if it is impractical to achieve a successful authentication by recording and replaying a previous authentication message. Techniques used to address this include protocols using nonces (e.g., numbers generated for a specific one-time use) or challenges (e.g., TLS, WS_Security). Additional techniques include time-synchronous or challenge-response one-time authenticators.

STIG	Date
Cisco ISE NDM Security Technical Implementation Guide	2021-04-19

Details

Check Text ( C-45917r714234_chk )
Navigate to Administration >> System >> Settings >> FIPS Mode. Verify FIPS Mode is enabled. If the Cisco ISE does not generate unique session identifiers using a FIPS 140-2 approved RNG, this is a finding.

Fix Text (F-45874r714235_fix)
Enable FIPS Mode in Cisco ISE to ensure DRBG is used for all RNG functions. 1. Choose Administration >> System >> Settings >> FIPS Mode. 2. Choose the "Enabled" option from the FIPS Mode drop-down list. 3. Click "Save" and restart the node.