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misc.yml
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/
misc.yml
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---
# 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: Check autofs service
command: systemctl status autofs
register: autofs_check
failed_when: autofs_check.rc not in [0,3,4]
changed_when: False
check_mode: no
tags:
- always
- name: V-71985 - File system automounter must be disabled unless required.
service:
name: autofs
state: stopped
enabled: no
when:
- autofs_check.rc not in [3,4]
- security_rhel7_disable_autofs | bool
tags:
- medium
- misc
- V-71985
# This returns an exit code of 0 if it's running, 3 if it's masked.
- name: Check if ctrl-alt-del.target is already masked
command: systemctl status ctrl-alt-del.target
register: cad_mask_check
check_mode: no
changed_when: False
failed_when: cad_mask_check.rc not in [0,3]
tags:
- always
- name: V-71993 - The x86 Ctrl-Alt-Delete key sequence must be disabled
command: systemctl mask ctrl-alt-del.target
when:
- security_rhel7_disable_ctrl_alt_delete | bool
- cad_mask_check.rc != 3
notify:
- reload systemd
tags:
- high
- misc
- V-71993
- name: Check for /home on mounted filesystem
debug:
msg: |
The STIG requires that /home is on its own filesystem, but this system
does not appear to be following the requirement.
when:
- ansible_mounts | selectattr('mount', 'equalto', '/home') | list | length == 0
tags:
- low
- misc
- V-72059
- name: Check for /var on mounted filesystem
debug:
msg: |
The STIG requires that /var is on its own filesystem, but this system
does not appear to be following the requirement.
when:
- ansible_mounts | selectattr('mount', 'equalto', '/var') | list | length == 0
tags:
- low
- misc
- V-72067
- name: Check for /var/log/audit on mounted filesystem
debug:
msg: |
The STIG requires that /var/log/audit is on its own filesystem, but this system
does not appear to be following the requirement.
when:
- ansible_mounts | selectattr('mount', 'equalto', '/var/log/audit') | list | length == 0
tags:
- low
- misc
- V-72063
- name: Check for /tmp on mounted filesystem
debug:
msg: |
The STIG requires that /tmp is on its own filesystem, but this system
does not appear to be following the requirement.
when:
- ansible_mounts | selectattr('mount', 'equalto', '/tmp') | list | length == 0
tags:
- low
- misc
- V-72065
- name: Check if syslog output is being sent to another server
command: 'grep "^[^#].*@" /etc/rsyslog.conf'
register: rsyslog_transmit_check
changed_when: False
failed_when: False
check_mode: no
tags:
- always
- name: V-72209 - The system must send rsyslog output to a log aggregation server.
debug:
msg: Output from syslog must be sent to another server.
when:
- rsyslog_transmit_check is defined
- rsyslog_transmit_check.rc != 0
tags:
- medium
- misc
- V-72209
- name: Check if ClamAV is installed
stat:
path: /usr/bin/clamdscan
register: clamav_install_check
changed_when: False
tags:
- always
- name: Remove 'Example' line from ClamAV configuration files
lineinfile:
dest: "{{ item }}"
regexp: "^Example"
state: absent
with_items:
- /etc/freshclam.conf
- /etc/clamd.d/scan.conf
when:
- clamav_install_check.stat.exists
- security_enable_virus_scanner | bool
- ansible_os_family | lower == 'redhat'
notify:
- restart clamav
tags:
- misc
- V-72213
- name: Set ClamAV server type as socket
lineinfile:
dest: /etc/clamd.d/scan.conf
regexp: "^(#)?LocalSocket (.*)$"
line: 'LocalSocket \2'
backrefs: yes
when:
- clamav_install_check.stat.exists
- security_enable_virus_scanner | bool
- ansible_os_family | lower == 'redhat'
notify:
- restart clamav
tags:
- misc
- V-72213
- name: Allow automatic freshclam updates
lineinfile:
dest: /etc/sysconfig/freshclam
regexp: "^FRESHCLAM_DELAY"
state: absent
when:
- clamav_install_check.stat.exists
- security_enable_virus_scanner | bool
- ansible_os_family | lower == 'redhat'
notify:
- restart clamav
tags:
- misc
- V-72213
- name: Update ClamAV database
command: freshclam
changed_when: False
when:
- clamav_install_check.stat.exists
- security_enable_virus_scanner | bool
- security_run_virus_scanner_update | bool
async: 300
poll: 5
tags:
- misc
- V-72213
- name: Ensure ClamAV is running
service:
name: "{{ clamav_service }}"
state: started
enabled: yes
when:
- clamav_install_check.stat.exists
- security_enable_virus_scanner | bool
tags:
- misc
- V-72213
- name: V-72223 - Set 10 minute timeout on communication sessions
blockinfile:
dest: /etc/profile
insertbefore: EOF
marker: "# {mark} MANAGED BY OPENSTACK-ANSIBLE-SECURITY"
block: |
# Set a {{ security_rhel7_session_timeout }} second timeout for sessions
TMOUT={{ security_rhel7_session_timeout }}
readonly TMOUT
export TMOUT
tags:
- medium
- misc
- V-72223
- name: Start and enable chrony
service:
name: "{{ chrony_service }}"
state: started
enabled: yes
when:
- not check_mode
- security_rhel7_enable_chrony | bool
tags:
- medium
- misc
- V-72269
- name: Check if chrony configuration file exists
stat:
path: "{{ chrony_conf_file }}"
register: chrony_conf_check
tags:
- always
- name: V-72269 - Synchronize system clock (configuration file)
template:
src: chrony.conf.j2
dest: "{{ chrony_conf_file }}"
when:
- chrony_conf_check.stat.exists
- security_rhel7_enable_chrony | bool
notify:
- restart chrony
tags:
- medium
- misc
- V-72269
# Returns 0 if installed, 3 if not installed
- name: Check firewalld status
command: systemctl status firewalld
register: firewalld_status_check
failed_when: firewalld_status_check.rc not in [0,3,4]
changed_when: False
check_mode: no
tags:
- always
- name: Ensure firewalld is running and enabled
service:
name: firewalld
state: started
enabled: yes
when:
- firewalld_status_check.rc not in [3,4]
- security_enable_firewalld | bool
tags:
- medium
- misc
- V-72273
- name: Limit new TCP connections to 25/minute and allow bursting to 100
command: "firewall-cmd --direct --add-rule ipv4 filter IN_public_allow 0 -m tcp -p tcp -m limit --limit {{ security_enable_firewalld_rate_limit_per_minute }}/minute --limit-burst {{ security_enable_firewalld_rate_limit_burst }} -j ACCEPT"
register: add_rate_limit_firewalld_rule
changed_when: "'ALREADY_ENABLED' not in add_rate_limit_firewalld_rule.stdout"
when:
- firewalld_status_check.rc != 3
- security_enable_firewalld_rate_limit | bool
tags:
- medium
- misc
- V-72271
# Linting checks need to be skipped because this command doesn't create any
# files.
- name: Count nameserver entries in /etc/resolv.conf
command: grep nameserver /etc/resolv.conf
register: nameserver_check
check_mode: no
changed_when: False
failed_when: False
tags:
- always
- skip_ansible_lint
- name: V-72281 - For systems using DNS resolution, at least two name servers must be configured.
debug:
msg: |
Two or more nameservers must be configured in /etc/resolv.conf.
Nameservers found: {{ nameserver_check.stdout_lines | length }}
when:
- nameserver_check is defined
- nameserver_check.stdout_lines | length < 2
tags:
- low
- misc
- V-72281
- name: Check for interfaces in promiscuous mode
shell: "ip link | grep -i promisc"
register: promiscuous_interface_check
changed_when: False
failed_when: False
check_mode: no
tags:
- always
- name: V-72295 - Network interfaces must not be in promiscuous mode.
debug:
msg: >
One or more network interfaces were found to be in promiscuous mode.
Review all interfaces and disable promiscuous mode.
when:
- promiscuous_interface_check.rc == 0
tags:
- medium
- misc
- V-72295
- name: Check for postfix configuration file
stat:
path: /etc/postfix/main.cf
register: postfix_conf_check
tags:
- always
- name: V-72297 - Prevent unrestricted mail relaying
lineinfile:
dest: /etc/postfix/main.cf
regexp: '^smtpd_client_restrictions'
line: 'smtpd_client_restrictions = permit_mynetworks, reject'
when:
- postfix_conf_check.stat.exists
- security_rhel7_restrict_mail_relaying | bool
tags:
- medium
- misc
- V-72297
- name: Check for TFTP server configuration file
stat:
path: /etc/xinetd.d/tftp
register: tftp_config_check
check_mode: no
tags:
- always
- name: Check TFTP configuration mode
command: 'grep server_args /etc/xinetd.d/tftp'
register: tftp_secure_check
changed_when: False
failed_when: False
check_mode: no
when:
- tftp_config_check.stat.exists
tags:
- always
- name: V-72305 - TFTP must be configured to operate in secure mode
debug:
msg: TFTP must be configured to run in secure mode with the '-s' flag.
when:
- tftp_config_check.stat.exists
- "'-s' not in tftp_secure_check.stdout"
tags:
- medium
- misc
- V-72305
- name: Check to see if snmpd config contains public/private
shell: 'egrep "^[^#].*(public|private)" /etc/snmp/snmpd.conf'
register: snmp_public_private_check
changed_when: False
failed_when: False
check_mode: no
tags:
- always
- name: V-72313 - Change SNMP community strings from default.
debug:
msg: >
Change the SNMP community strings from the defaults of 'public' and
'private' to meet the requirements of V-72313.
when:
- snmp_public_private_check.rc == 0
tags:
- high
- misc
- V-72313