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V-279609

CAT II (Medium)

Operating systems must enforce 24 hours/1 day as the minimum password lifetime.

Rule ID

SV-279609r1192569_rule

STIG

Nutanix Acropolis GPOS Security Technical Implementation Guide

Version

V1R1

CCIs

CCI-004066

Discussion

Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enforcement requirement. If users are allowed to immediately and continually change their password, then the password could be repeatedly changed in a short period of time to defeat the organization's policy regarding password reuse.

Check Content

1. Verify Nutanix AOS is configured to enforce 24hour/1day minimum password lifetime using the following command.

$ sudo grep -i pass_min_days /etc/login.defs
PASS_MIN_DAYS 1

If the "PASS_MIN_DAYS" parameter value is not "1" or greater, or is commented out, this is a finding.

2. Run the following command. 

$ sudo awk -F: '$4 < 1 {print $1 " " $4}' /etc/shadow

If any results are returned that are not associated with a system account, this is a finding.

Fix Text

Configure Nutanix OS to use complex password.

1. For AOS, enter the following command.

$ sudo salt-call state.sls security/CVM/pamCVM.sls

2. For Prism Central, enter the following command.

$ sudo salt-call state.sls security/PCVM/pamPCVM.sls

3. For Files, enter the following command.

$ sudo salt-call state.sls security/AFS/pamAFS.sls

4. For AHV OS CVM, enter the following command.

$ ncli cluster edit-hypervisor-security-params enable-high-strength-password=true