Verify Permissions on /etc/security/opasswd File

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Description

To properly set the permissions of /etc/security/opasswd, run the command:

$ sudo chmod 0600 /etc/security/opasswd

Rationale

The /etc/security/opasswd file stores old passwords to prevent password reuse. Protection of this file is critical for system security.

Remediation

Shell script

The following script can be run on the host to remediate the issue.

#!/bin/bash

chmod u-xs,g-xwrs,o-xwrt /etc/security/opasswd

Ansible playbook

The following playbook can be run with Ansible to remediate the issue.

- name: Test for existence /etc/security/opasswd
  stat:
    path: /etc/security/opasswd
  register: file_exists
  tags:
  - configure_strategy
  - file_permissions_etc_security_opasswd
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

- name: Ensure permission u-xs,g-xwrs,o-xwrt on /etc/security/opasswd
  file:
    path: /etc/security/opasswd
    mode: u-xs,g-xwrs,o-xwrt
  when: file_exists.stat is defined and file_exists.stat.exists
  tags:
  - configure_strategy
  - file_permissions_etc_security_opasswd
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed