Verify Group Who Owns Backup gshadow File

이 페이지는 아직 한국어로 제공되지 않으며 번역 작업 중입니다. 번역에 관한 질문이나 의견이 있으시면 언제든지 저희에게 연락해 주십시오.

Description

To properly set the group owner of /etc/gshadow-, run the command:

$ sudo chgrp shadow /etc/gshadow-

Rationale

The /etc/gshadow- file is a backup of /etc/gshadow, and as such, it contains group password hashes. 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

chgrp 42 /etc/gshadow-

Ansible playbook

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

- name: Test for existence /etc/gshadow-
  stat:
    path: /etc/gshadow-
  register: file_exists
  tags:
  - NIST-800-53-AC-6 (1)
  - PCI-DSS-Req-8.7
  - configure_strategy
  - file_groupowner_backup_etc_gshadow
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

- name: Ensure group owner 42 on /etc/gshadow-
  file:
    path: /etc/gshadow-
    group: '42'
  when: file_exists.stat is defined and file_exists.stat.exists
  tags:
  - NIST-800-53-AC-6 (1)
  - PCI-DSS-Req-8.7
  - configure_strategy
  - file_groupowner_backup_etc_gshadow
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed