Verify Permissions On /etc/chrony.keys File

An XCCDF Rule

Description

To properly set the permissions of /etc/chrony.keys, run the command:

$ sudo chmod 0640 /etc/chrony.keys

Rationale

Setting correct permissions on the /etc/chrony.keys file is important because this file hosts chrony cryptographic keys. Protection of this file is critical for system security. Assigning the correct mode ensures exclusive control of the chrony cryptographic keys.

ID: xccdf_org.ssgproject.content_rule_file_permissions_etc_chrony_keys
Severity: Medium
References: R50

CCE-86383-7
Updated: 5 days ago

- name: Gather the package facts
  package_facts:
    manager: auto
  tags:
  - CCE-86383-7
  - configure_strategy  - file_permissions_etc_chrony_keys
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

- name: Test for existence /etc/chrony.keys
  stat:
    path: /etc/chrony.keys
  register: file_exists
  when: '"kernel" in ansible_facts.packages'
  tags:
  - CCE-86383-7
  - configure_strategy
  - file_permissions_etc_chrony_keys
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

- name: Ensure permission u-xs,g-xws,o-xwrt on /etc/chrony.keys
  file:
    path: /etc/chrony.keys
    mode: u-xs,g-xws,o-xwrt
  when:
  - '"kernel" in ansible_facts.packages'
  - file_exists.stat is defined and file_exists.stat.exists
  tags:
  - CCE-86383-7
  - configure_strategy
  - file_permissions_etc_chrony_keys
  - low_complexity
  - low_disruption
  - medium_severity
  - no_reboot_needed

# Remediation is applicable only in certain platforms
if rpm --quiet -q kernel; then

chmod u-xs,g-xws,o-xwrt /etc/chrony.keys

else    >&2 echo 'Remediation is not applicable, nothing was done'
fi

Verify Permissions On /etc/chrony.keys File

Description

Rationale

Remediation - Ansible

Remediation - Shell Script