Verify Permissions on /etc/security/opasswd.old File

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Description

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

$ sudo chmod 0600 /etc/security/opasswd.old

Rationale

The /etc/security/opasswd.old file stores backups of 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.old

Ansible playbook

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

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

- name: Ensure permission u-xs,g-xwrs,o-xwrt on /etc/security/opasswd.old
  file:
    path: /etc/security/opasswd.old
    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_old
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed