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The Cisco ISE must authenticate Network Time Protocol (NTP) sources using authentication that is cryptographically based.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-242644CSCO-NM-000390SV-242644r1025183_ruleCCI-001967medium
Description
If NTP is not authenticated, an attacker can introduce a rogue NTP server. This rogue server can then be used to send incorrect time information to network devices, which will make log timestamps inaccurate and affect scheduled actions. NTP authentication is used to prevent this tampering by authenticating the time source.
STIGDate
Cisco ISE NDM Security Technical Implementation Guide2024-09-10

Related Frameworks

1 mapping across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

IAC-04Identification & Authentication for Devices
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (49) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-17(10)Authenticate Remote Commands
1.00
AC-17(2)Protection of Confidentiality and Integrity Using Encryption
1.00
AC-18(1)Authentication and Encryption
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(11)Usage Conditions
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-4(17)Domain Authentication
1.00
AC-7Unsuccessful Logon Attempts
1.00
AU-8Time Stamps
1.00

+39 more (top 10 by confidence shown)

CCI1 mapping
CCI-001967
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 4 hops (3) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

PR.AA-01
0.50
PR.AA-03
0.50
PR.AA-05
0.50

Details

Check Text (C-242644r1025183_chk)

1. Choose Administration >> System >> Settings >> System Time. 2. Review the configuration of the NTP servers. 3. Verify "Only allow authenticated NTP servers" is checked. If the Cisco ISE is not configured to authenticate NTP sources using authentication that is cryptographically based, this is a finding.

Fix Text (F-45876r1025182_fix)

1. Choose Administration >> System >> Settings >> System Time. 2. Enter unique IP addresses (IPv4/IPv6/FQDN) for the NTP servers. 3. Check the "Only allow authenticated NTP servers" check box if you want to restrict Cisco ISE to use only authenticated NTP servers to keep system and network time. DOD requires NTP authentication where available, so configure the NTP server using private keys. Click the "NTP Authentication Keys" tab and specify one or more authentication keys if any of the specified servers requires authentication via an authentication key, as follows: 4. Click "Add". 5. Enter the necessary Key ID and Key Value. Specify whether the key in question is trusted by activating or deactivating the Trusted Key option, and click "OK". The Key ID field supports numeric values between 1 and 65535, and the Key Value field supports up to 15 alphanumeric characters. 6. Return to the NTP Server Configuration tab when finished entering the NTP Server Authentication Keys. 7. Click "Save".