Verify User Who Owns Backup gshadow File
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Description
To properly set the owner of /etc/gshadow-, run the command:
$ sudo chown root /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.
Shell script
The following script can be run on the host to remediate the issue.
#!/bin/bash
chown -L 0 /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_owner_backup_etc_gshadow
- low_complexity
- low_disruption
- medium_severity
- no_reboot_needed
- name: Ensure owner 0 on /etc/gshadow-
file:
path: /etc/gshadow-
owner: '0'
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_owner_backup_etc_gshadow
- low_complexity
- low_disruption
- medium_severity
- no_reboot_needed
