The Cisco router must automatically disable accounts after a 35-day period of account inactivity.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-96377	CISC-ND-000080	SV-105515r1_rule		Medium

Description
Since the accounts in the network device are privileged or system-level accounts, account management is vital to the security of the network device. Inactive accounts could be reactivated or compromised by unauthorized users, allowing exploitation of vulnerabilities and undetected access to the network device. This control does not apply to the account of last resort or root account. DoD prohibits local user accounts on the device, except for an account of last resort and (where applicable) a root account.

Description

Since the accounts in the network device are privileged or system-level accounts, account management is vital to the security of the network device. Inactive accounts could be reactivated or compromised by unauthorized users, allowing exploitation of vulnerabilities and undetected access to the network device. This control does not apply to the account of last resort or root account. DoD prohibits local user accounts on the device, except for an account of last resort and (where applicable) a root account.

STIG	Date
Cisco IOS XR Router NDM Security Technical Implementation Guide	2019-07-26

Details

Check Text ( C-95213r1_chk )
The Cisco router is not compliant with this requirement. However, the risk associated with this requirement can be fully mitigated if the router is configured to utilize an authentication server to authenticate and authorize users for administrative access. Review the router configuration to verify that the device is configured to use an authentication server as primary source for authentication as shown in the following example: radius-server host 10.1.3.16 auth-port 1645 acct-port 1646 key xxxxxxxxxx … … … aaa authentication login LOGIN_AUTHENTICATION group radius local line console login authentication LOGIN_AUTHENTICATION ! line default login authentication LOGIN_AUTHENTICATION transport input ssh If the router is not configured to use an authentication server to authenticate and authorize users for administrative access, this is a finding.

Check Text ( C-95213r1_chk )

The Cisco router is not compliant with this requirement. However, the risk associated with this requirement can be fully mitigated if the router is configured to utilize an authentication server to authenticate and authorize users for administrative access.

Review the router configuration to verify that the device is configured to use an authentication server as primary source for authentication as shown in the following example:

radius-server host 10.1.3.16 auth-port 1645 acct-port 1646
key xxxxxxxxxx
…
…
…
aaa authentication login LOGIN_AUTHENTICATION group radius local
line console
login authentication LOGIN_AUTHENTICATION
!
line default
login authentication LOGIN_AUTHENTICATION
transport input ssh

If the router is not configured to use an authentication server to authenticate and authorize users for administrative access, this is a finding.

Fix Text (F-102053r2_fix)
Step 1: Configure the router to use an authentication server as shown in the following example: RP/0/0/CPU0:R3(config)#radius-server host 10.1.3.16 key xxxxxxxx Step 2: Configure the authentication order to use the authentication server as primary source for authentication as shown in the following example: RP/0/0/CPU0:R3(config)#aaa authentication login LOGIN_AUTHENTICATION group radius local Step 3: Configure all network connections associated with a device management to use an authentication server for the purpose of login authentication as shown in the following example: RP/0/0/CPU0:R3(config)#line default RP/0/0/CPU0:R3(config-line)#login authentication LOGIN_AUTHENTICATION RP/0/0/CPU0:R3(config-line)#exit RP/0/0/CPU0:R3(config)#line console RP/0/0/CPU0:R3(config-line)#login authentication LOGIN_AUTHENTICATION

Fix Text (F-102053r2_fix)

Step 1: Configure the router to use an authentication server as shown in the following example:

RP/0/0/CPU0:R3(config)#radius-server host 10.1.3.16 key xxxxxxxx

Step 2: Configure the authentication order to use the authentication server as primary source for authentication as shown in the following example:

RP/0/0/CPU0:R3(config)#aaa authentication login LOGIN_AUTHENTICATION group radius local

Step 3: Configure all network connections associated with a device management to use an authentication server for the purpose of login authentication as shown in the following example:

RP/0/0/CPU0:R3(config)#line default
RP/0/0/CPU0:R3(config-line)#login authentication LOGIN_AUTHENTICATION
RP/0/0/CPU0:R3(config-line)#exit
RP/0/0/CPU0:R3(config)#line console
RP/0/0/CPU0:R3(config-line)#login authentication LOGIN_AUTHENTICATION