/home/zuul/src/opendev.org/openstack/ansible-hardening/tasks/rhel7stig/kernel.yml
---
# Copyright 2016, Rackspace US, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

- name: V-71983 - USB mass storage must be disabled.
  lineinfile:
    dest: /etc/modprobe.d/ansible-hardening-disable-usb-storage.conf
    line: install usb-storage /bin/true
    create: yes
  when:
    - security_rhel7_disable_usb_storage | bool
  tags:
    - kernel
    - medium
    - V-71983

- name: Set sysctl configurations
  sysctl:
    name: "{{ item.name }}"
    value: "{{ item.value }}"
    state: "{{ item.enabled | ternary('present', 'absent') }}"
    reload: yes
  when:
    - item.enabled | bool
  with_items: "{{ sysctl_settings_rhel7 }}"
  tags:
    - medium
    - kernel
    - V-72283
    - V-72285
    - V-72287
    - V-72289
    - V-73175
    - V-72291
    - V-72293
    - V-72309
    - V-72319
    - C-00001

- name: Check kdump service
  command: systemctl status kdump
  register: kdump_service_check
  failed_when: kdump_service_check.rc not in [0,3,4]
  changed_when: False
  check_mode: no
  tags:
    - kernel
    - medium
    - V-72057

- name: V-72057 - Kernel core dumps must be disabled unless needed.
  service:
    name: kdump
    state: stopped
    enabled: no
  when:
    - kdump_service_check.rc not in [3,4]
    - security_disable_kdump
  tags:
    - kernel
    - medium
    - V-72057

- name: Check if FIPS is enabled
  command: cat /proc/sys/crypto/fips_enabled
  register: fips_check
  changed_when: False
  failed_when: False
  check_mode: no
  when:
    - ansible_pkg_mgr in ['yum', 'zypper']
  tags:
    - always

- name: Print a warning if FIPS isn't enabled
  debug:
    msg: >
      FIPS is not enabled at boot time on this server.
      The STIG requires FIPS to be enabled at boot time.
  when:
    - ansible_pkg_mgr in ['yum', 'zypper']
    - fips_check is defined
    - fips_check.stdout != '1'
  tags:
    - high
    - misc
    - V-72067

- name: V-77821 - Datagram Congestion Control Protocol (DCCP) kernel module must be disabled
  copy:
    src: ansible-hardening-disable-dccp.conf
    dest: /etc/modprobe.d/ansible-hardening-disable-dccp.conf
  when:
    - security_rhel7_disable_dccp | bool
  tags:
    - kernel
    - medium
    - V-77821