Set existing passwords a period of inactivity before they been locked
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Description
Configure user accounts that have been inactive for over a given period of time
to be automatically disabled by running the following command:
$ sudo chage --inactive 30USER
Rationale
Inactive accounts pose a threat to system security since the users are not logging in to
notice failed login attempts or other anomalies.
Shell script
The following script can be run on the host to remediate the issue.
#!/bin/bash
var_account_disable_post_pw_expiration='30'
while IFS= read -r i; do
chage --inactive $var_account_disable_post_pw_expiration $i
done < <(awk -v var="$var_account_disable_post_pw_expiration" -F: '(($7 > var || $7 == "") && $2 ~ /^\$/) {print $1}' /etc/shadow)
Ansible playbook
The following playbook can be run with Ansible to remediate the issue.
- name: XCCDF Value var_account_disable_post_pw_expiration # promote to variable
set_fact:
var_account_disable_post_pw_expiration: !!str 30
tags:
- always
- name: Collect users with not correct INACTIVE parameter set
ansible.builtin.command:
cmd: awk -F':' '(($7 > {{ var_account_disable_post_pw_expiration }} || $7 == "")
&& $2 ~ /^\$/) {print $1}' /etc/shadow
register: user_names
changed_when: false
tags:
- CCE-86757-2
- NIST-800-171-3.5.6
- NIST-800-53-AC-2(3)
- NIST-800-53-CM-6(a)
- NIST-800-53-IA-4(e)
- PCI-DSS-Req-8.1.4
- PCI-DSSv4-8.2.6
- accounts_set_post_pw_existing
- low_complexity
- low_disruption
- medium_severity
- no_reboot_needed
- restrict_strategy
- name: Change the period of inactivity
ansible.builtin.command:
cmd: chage --inactive {{ var_account_disable_post_pw_expiration }} {{ item }}
with_items: '{{ user_names.stdout_lines }}'
when: user_names is not skipped and user_names.stdout_lines | length > 0
tags:
- CCE-86757-2
- NIST-800-171-3.5.6
- NIST-800-53-AC-2(3)
- NIST-800-53-CM-6(a)
- NIST-800-53-IA-4(e)
- PCI-DSS-Req-8.1.4
- PCI-DSSv4-8.2.6
- accounts_set_post_pw_existing
- low_complexity
- low_disruption
- medium_severity
- no_reboot_needed
- restrict_strategy
