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George Nalen edited this page Mar 25, 2021 · 13 revisions

RHEL8-CIS Role Variables

Summary

As the end user you should only need to adjust the variables found within the defaults/main.yml. These address things ranging from very high level role controls to site specific host settings. Please reivew these before running the role to get a full understanding of what will need to be configured before running this role.

Disables controls that fail within travis testing pipelines. Setting to true will skip controls that are not supported with travis.

rhel8cis_skip_for_travis: false

Disables controls that fail within container environments, Setting this to true will skip controls that are not supported by cloud environments

rhel8cis_system_is_container: false

Disable controls that are not supported in Amazon EC2 VM instances. Setting this value to true will skip controls that are not supported by EC2

rhel8cis was dropped from prefix for internal test pipeline needs
system_is_ec2: false

Run CIS checks that we typically do NOT want to automate due to the high probability of breaking the system (Default: false)

rhel8cis_notauto: false

Disables whole control sections

General Settings (Section 1) (Default: true)
rhel8cis_section1: true
Services settings (Section 2) (Default: true)
rhel8cis_section2: true
Network settings (Section 3) (Default: true)
rhel8cis_section3: true
Logging and Auditing settings (Section 4) (Default: true)
rhel8cis_section4: true
Access, Authentication and Authorization settings (Section 5) (Default: true)
rhel8cis_section5: true
System Maintenance settings (Section 6) (Default: true)
rhel8cis_section6: true

Disable SELinux related tasks. Set to true to disable

rhel8cis_selinux_disable: false

Python Binary
This is used for python3 Installations where python2 OS modules are used in ansible

python2_bin: /bin/python2.7

Benchmark name used by audting control role
The audit variable found at the base

benchmark: RHEL8-CIS

Audit Toggles

Enable goss binary download

rhel8cis_setup_audit: false

Options are downoad from github or copy from pre downloaded location
copy or download

get_goss_file: download

Enable audits to run

rhel8cis_run_audit: false

Disable individual controls

These variables correspond with the CIS rule IDs or paragraph numbers defined in the CIS benchmark documents PLEASE NOTE: These work in coordination with the section # group variables and tags You must enable an entire section in order for the variables below to take effect

# Section 1 rules
rhel8cis_rule_1_1_1_1: true
rhel8cis_rule_1_1_1_2: true
rhel8cis_rule_1_1_1_3: true
rhel8cis_rule_1_1_1_4: true
rhel8cis_rule_1_1_1_5: true
rhel8cis_rule_1_1_2: true
rhel8cis_rule_1_1_3: true
rhel8cis_rule_1_1_4: true
rhel8cis_rule_1_1_5: true
rhel8cis_rule_1_1_6: true
rhel8cis_rule_1_1_7: true
rhel8cis_rule_1_1_8: true
rhel8cis_rule_1_1_9: true
rhel8cis_rule_1_1_10: true
rhel8cis_rule_1_1_11: true
rhel8cis_rule_1_1_12: true
rhel8cis_rule_1_1_13: true
rhel8cis_rule_1_1_14: true
rhel8cis_rule_1_1_15: true
rhel8cis_rule_1_1_16: true
rhel8cis_rule_1_1_17: true
rhel8cis_rule_1_1_18: true
rhel8cis_rule_1_1_19: true
rhel8cis_rule_1_1_20: true
rhel8cis_rule_1_1_21: true
rhel8cis_rule_1_1_22: true
rhel8cis_rule_1_1_23: true
rhel8cis_rule_1_2_1: true
rhel8cis_rule_1_2_2: true
rhel8cis_rule_1_2_3: true
rhel8cis_rule_1_2_4: true
rhel8cis_rule_1_2_5: true
rhel8cis_rule_1_3_1: true
rhel8cis_rule_1_3_2: true
rhel8cis_rule_1_3_3: true
rhel8cis_rule_1_4_1: true
rhel8cis_rule_1_4_2: true
rhel8cis_rule_1_5_1: true
rhel8cis_rule_1_5_2: true
rhel8cis_rule_1_5_3: true
rhel8cis_rule_1_6_1: true
rhel8cis_rule_1_6_2: true
rhel8cis_rule_1_7_1_1: true
rhel8cis_rule_1_7_1_2: true
rhel8cis_rule_1_7_1_3: true
rhel8cis_rule_1_7_1_4: true
rhel8cis_rule_1_7_1_5: true
rhel8cis_rule_1_7_1_6: true
rhel8cis_rule_1_7_1_7: true
rhel8cis_rule_1_8_1_1: true
rhel8cis_rule_1_8_1_2: true
rhel8cis_rule_1_8_1_3: true
rhel8cis_rule_1_8_1_4: true
rhel8cis_rule_1_8_1_5: true
rhel8cis_rule_1_8_1_6: true
rhel8cis_rule_1_8_2: true
rhel8cis_rule_1_9: true
rhel8cis_rule_1_10: true
rhel8cis_rule_1_11: true

# Section 2 rules
rhel8cis_rule_2_1_1: true
rhel8cis_rule_2_1_2: true
rhel8cis_rule_2_1_3: true
rhel8cis_rule_2_1_4: true
rhel8cis_rule_2_1_5: true
rhel8cis_rule_2_1_6: true
rhel8cis_rule_2_1_7: true
rhel8cis_rule_2_2_1_1: true
rhel8cis_rule_2_2_1_2: true
rhel8cis_rule_2_2_1_3: true
rhel8cis_rule_2_2_2: true
rhel8cis_rule_2_2_3: true
rhel8cis_rule_2_2_4: true
rhel8cis_rule_2_2_5: true
rhel8cis_rule_2_2_6: true
rhel8cis_rule_2_2_7: true
rhel8cis_rule_2_2_8: true
rhel8cis_rule_2_2_9: true
rhel8cis_rule_2_2_10: true
rhel8cis_rule_2_2_11: true
rhel8cis_rule_2_2_12: true
rhel8cis_rule_2_2_13: true
rhel8cis_rule_2_2_14: true
rhel8cis_rule_2_2_15: true
rhel8cis_rule_2_2_16: true
rhel8cis_rule_2_2_17: true
rhel8cis_rule_2_2_18: true
rhel8cis_rule_2_3_1: true
rhel8cis_rule_2_3_2: true
rhel8cis_rule_2_3_3: true

# Section 3 rules
rhel8cis_rule_3_1_1: true
rhel8cis_rule_3_1_2: true
rhel8cis_rule_3_2_1: true
rhel8cis_rule_3_2_2: true
rhel8cis_rule_3_2_3: true
rhel8cis_rule_3_2_4: true
rhel8cis_rule_3_2_5: true
rhel8cis_rule_3_2_6: true
rhel8cis_rule_3_2_7: true
rhel8cis_rule_3_2_8: true
rhel8cis_rule_3_2_9: true
rhel8cis_rule_3_3_1: true
rhel8cis_rule_3_3_2: true
rhel8cis_rule_3_3_3: true
rhel8cis_rule_3_3_4: true
rhel8cis_rule_3_4_1_1: true
rhel8cis_rule_3_4_2_1: true
rhel8cis_rule_3_4_2_2: true
rhel8cis_rule_3_4_2_3: true
rhel8cis_rule_3_4_2_4: true
rhel8cis_rule_3_4_2_5: true
rhel8cis_rule_3_4_2_6: true
rhel8cis_rule_3_4_3_1: true
rhel8cis_rule_3_4_3_2: true
rhel8cis_rule_3_4_3_3: true
rhel8cis_rule_3_4_3_4: true
rhel8cis_rule_3_4_3_5: true
rhel8cis_rule_3_4_3_6: true
rhel8cis_rule_3_4_3_7: true
rhel8cis_rule_3_4_3_8: true
rhel8cis_rule_3_4_4_1_1: true
rhel8cis_rule_3_4_4_1_2: true
rhel8cis_rule_3_4_4_1_3: true
rhel8cis_rule_3_4_4_1_4: true
rhel8cis_rule_3_4_4_2_1: true
rhel8cis_rule_3_4_4_2_2: true
rhel8cis_rule_3_4_4_2_3: true
rhel8cis_rule_3_4_4_2_4: true
rhel8cis_rule_3_5: true
rhel8cis_rule_3_6: true

# Section 4 rules
rhel8cis_rule_4_1_1_1: true
rhel8cis_rule_4_1_1_2: true
rhel8cis_rule_4_1_1_3: true
rhel8cis_rule_4_1_1_4: true
rhel8cis_rule_4_1_2_1: true
rhel8cis_rule_4_1_2_2: true
rhel8cis_rule_4_1_2_3: true
rhel8cis_rule_4_1_3: true
rhel8cis_rule_4_1_4: true
rhel8cis_rule_4_1_5: true
rhel8cis_rule_4_1_6: true
rhel8cis_rule_4_1_7: true
rhel8cis_rule_4_1_8: true
rhel8cis_rule_4_1_9: true
rhel8cis_rule_4_1_10: true
rhel8cis_rule_4_1_11: true
rhel8cis_rule_4_1_12: true
rhel8cis_rule_4_1_13: true
rhel8cis_rule_4_1_14: true
rhel8cis_rule_4_1_15: true
rhel8cis_rule_4_1_16: true
rhel8cis_rule_4_1_17: true
rhel8cis_rule_4_2_1_1: true
rhel8cis_rule_4_2_1_2: true
rhel8cis_rule_4_2_1_3: true
rhel8cis_rule_4_2_1_4: false
rhel8cis_rule_4_2_1_5: true
rhel8cis_rule_4_2_1_6: true
rhel8cis_rule_4_2_2_1: true
rhel8cis_rule_4_2_2_2: true
rhel8cis_rule_4_2_2_3: true
rhel8cis_rule_4_2_3: true
rhel8cis_rule_4_3: true

# Section 5 rules
rhel8cis_rule_5_1_1: true
rhel8cis_rule_5_1_2: true
rhel8cis_rule_5_1_3: true
rhel8cis_rule_5_1_4: true
rhel8cis_rule_5_1_5: true
rhel8cis_rule_5_1_6: true
rhel8cis_rule_5_1_7: true
rhel8cis_rule_5_1_8: true
rhel8cis_rule_5_2_1: true
rhel8cis_rule_5_2_2: true
rhel8cis_rule_5_2_3: true
rhel8cis_rule_5_2_4: true
rhel8cis_rule_5_2_5: true
rhel8cis_rule_5_2_6: true
rhel8cis_rule_5_2_7: true
rhel8cis_rule_5_2_8: true
rhel8cis_rule_5_2_9: true
rhel8cis_rule_5_2_10: true
rhel8cis_rule_5_2_12: true
rhel8cis_rule_5_2_11: true
rhel8cis_rule_5_2_13: true
rhel8cis_rule_5_2_14: true
rhel8cis_rule_5_2_15: true
rhel8cis_rule_5_2_16: true
rhel8cis_rule_5_2_17: true
rhel8cis_rule_5_2_18: true
rhel8cis_rule_5_2_19: true
rhel8cis_rule_5_2_20: true
rhel8cis_rule_5_3_1: true
rhel8cis_rule_5_3_2: true
rhel8cis_rule_5_3_3: true
rhel8cis_rule_5_4_1: true
rhel8cis_rule_5_4_2: true
rhel8cis_rule_5_4_3: true
rhel8cis_rule_5_4_4: true
rhel8cis_rule_5_4_5: true
rhel8cis_rule_5_5_1_1: true
rhel8cis_rule_5_5_1_2: true
rhel8cis_rule_5_5_1_3: true
rhel8cis_rule_5_5_1_4: true
rhel8cis_rule_5_5_1_5: true
rhel8cis_rule_5_5_2: true
rhel8cis_rule_5_5_3: true
rhel8cis_rule_5_5_4: true
rhel8cis_rule_5_5_5: true
rhel8cis_rule_5_6: true
rhel8cis_rule_5_7: true

# Section 6 rules
rhel8cis_rule_6_1_1: true
rhel8cis_rule_6_1_2: true
rhel8cis_rule_6_1_3: true
rhel8cis_rule_6_1_4: true
rhel8cis_rule_6_1_5: true
rhel8cis_rule_6_1_6: true
rhel8cis_rule_6_1_7: true
rhel8cis_rule_6_1_8: true
rhel8cis_rule_6_1_9: true
rhel8cis_rule_6_1_10: true
rhel8cis_rule_6_1_11: true
rhel8cis_rule_6_1_12: true
rhel8cis_rule_6_1_13: true
rhel8cis_rule_6_1_14: true
rhel8cis_rule_6_2_1: true
rhel8cis_rule_6_2_2: true
rhel8cis_rule_6_2_3: true
rhel8cis_rule_6_2_4: true
rhel8cis_rule_6_2_5: true
rhel8cis_rule_6_2_6: true
rhel8cis_rule_6_2_7: true
rhel8cis_rule_6_2_8: false
rhel8cis_rule_6_2_9: true
rhel8cis_rule_6_2_10: true
rhel8cis_rule_6_2_11: true
rhel8cis_rule_6_2_12: true
rhel8cis_rule_6_2_13: true
rhel8cis_rule_6_2_14: true
rhel8cis_rule_6_2_15: true
rhel8cis_rule_6_2_16: true
rhel8cis_rule_6_2_17: true
rhel8cis_rule_6_2_18: true
rhel8cis_rule_6_2_19: true
rhel8cis_rule_6_2_20: true

Disable controls that remove/disable services. Set to false to remove specific service

# Service configuration booleans set true to keep service
rhel8cis_avahi_server: false
rhel8cis_cups_server: false
rhel8cis_dhcp_server: false
rhel8cis_ldap_server: false
rhel8cis_telnet_server: false
rhel8cis_nfs_server: false
rhel8cis_rpc_server: false
rhel8cis_ntalk_server: false
rhel8cis_rsyncd_server: false
rhel8cis_tftp_server: false
rhel8cis_rsh_server: false
rhel8cis_nis_server: false
rhel8cis_snmp_server: false
rhel8cis_squid_server: false
rhel8cis_smb_server: false
rhel8cis_dovecot_server: false
rhel8cis_httpd_server: false
rhel8cis_vsftpd_server: false
rhel8cis_named_server: false
rhel8cis_nfs_rpc_server: false
rhel8cis_is_mail_server: false
rhel8cis_bind: false
rhel8cis_vsftpd: false
rhel8cis_httpd: false
rhel8cis_dovecot: false
rhel8cis_samba: false
rhel8cis_squid: false
rhel8cis_net_snmp: false
rhel8cis_allow_autofs: false

Section 1 related vars

1.1.2
These settings go into the /etc/fstab file for the /tmp mount settings
The value must contain nosuid,nodev,noexec to conform to CIS standards
rhel8cis_tmp_tmpfs_settings: "defaults,rw,nosuid,nodev,noexec,relatime 0 0"
If set true uses the tmp.mount service else using fstab configuration

rhel8cis_tmp_svc: false

1.2.1
This is the login information for your RedHat Subscription
DO NOT USE PLAIN TEXT PASSWORDS!!!!!
The intent here is to use a password utility like Ansible Vault here

rhel8cis_rh_sub_user: user
rhel8cis_rh_sub_password: password

1.2.2
Do you require rhnsd
RedHat Satellite Subscription items

rhel8cis_rhnsd_required: false

1.3.3 var log location variable

rhel8cis_varlog_location: "/var/log/sudo.log"

xinetd required

rhel8cis_xinetd_required: false

1.4.2 Bootloader password

rhel8cis_bootloader_password_hash: 'grub.pbkdf2.sha512.changethispassword'
rhel8cis_bootloader_password: random
rhel8cis_set_boot_pass: false

1.10/1.11 Set crypto policy (LEGACY, DEFAULT, FUTURE, FIPS)
Control 1.10 sates not ot use LEGACY and control 1.11 says to use FUTURE or FIPS.

hel8cis_crypto_policy: "FIPS"

System network parameters (host only OR host and router)

rhel8cis_is_router: false

IPv6 required

rhel8cis_ipv6_required: true

AIDE

rhel8cis_config_aide: true

AIDE cron settings

rhel8cis_aide_cron:
    cron_user: root
    cron_file: /etc/crontab
    aide_job: '/usr/sbin/aide --check'
    aide_minute: 0
    aide_hour: 5
    aide_day: '*'
    aide_month: '*'
    aide_weekday: '*'

SELinux policy

rhel8cis_selinux_pol: targeted

Whether or not to run tasks related to auditing/patching the desktop environment

rhel8cis_gui: no

Set to 'true' if X Windows is needed in your environment

rhel8cis_xwindows_required: false

Other required clients

rhel8cis_openldap_clients_required: false
rhel8cis_telnet_required: false
rhel8cis_talk_required: false
rhel8cis_rsh_required: false
rhel8cis_ypbind_required: false

2.2.1.1 Time Synchronization - Either chrony or ntp

rhel8cis_time_synchronization: chrony

2.2.1.2 Time Synchronization servers - used in template file chrony.conf.j2

rhel8cis_time_synchronization_servers:
    - 0.pool.ntp.org
    - 1.pool.ntp.org
    - 2.pool.ntp.org
    - 3.pool.ntp.org

rhel8cis_chrony_server_options: "minpoll 8"
rhel8cis_ntp_server_options: "iburst"

Section3 vars

3.4.2 | PATCH | Ensure /etc/hosts.allow is configured

rhel8cis_host_allow:
    - "10.0.0.0/255.0.0.0"
    - "172.16.0.0/255.240.0.0"
    - "192.168.0.0/255.255.0.0"

Firewall Service - either firewalld, iptables, or nftables

rhel8cis_firewall: firewalld

3.4.2.4 Default zone setting

rhel8cis_default_zone: public

3.4.2.5 Zone and Interface setting

rhel8cis_int_zone: customezone
rhel8cis_interface: eth0

Firewall services

rhel8cis_firewall_services:
    - ssh
    - dhcpv6-client

3.4.3.2 Set nftables new table create

rhel8cis_nft_tables_autonewtable: true
rhel8cis_nft_tables_tablename: filter

3.4.3.3 Set nftables new chain create

rhel8cis_nft_tables_autoChainCreate: true

Warning Banner Content (issue, issue.net, motd)

rhel8cis_warning_banner: |
    Authorized uses only. All activity may be monitored and reported.
# End Banner

Section4 vars

auditd settings

rhel8cis_auditd:
    space_left_action: email
    action_mail_acct: root
    admin_space_left_action: halt
    max_log_file_action: keep_logs

rhel8cis_logrotate: "daily"

The audit_back_log_limit value should never be below 8192

rhel8cis_audit_back_log_limit: 8192

The max_log_file parameter should be based on your sites policy

rhel8cis_max_log_file_size: 10

RHEL-08-4.2.1.4/4.2.1.5 remote and destation log server name

rhel8cis_remote_log_server: logagg.example.com

RHEL-08-4.2.1.5

rhel8cis_system_is_log_server: false

Section5 vars

rhel8cis_sshd:
    clientalivecountmax: 3
    clientaliveinterval: 300
    ciphers: "aes256-ctr,aes192-ctr,aes128-ctr"
    macs: "[email protected],[email protected],[email protected],hmac-sha2-512,hmac-sha2-256,[email protected]"
    logingracetime: 60
    # WARNING: make sure you understand the precedence when working with these values!!
    # allowusers:
    # allowgroups: systems dba
    # denyusers:
    # denygroups:
rhel8cis_pam_faillock:
    attempts: 5
    interval: 900
    unlock_time: 900
    fail_for_root: no
    remember: 5
    pwhash: sha512

5.2.5 SSH LogLevel setting. Options are INFO or VERBOSE

rhel8cis_ssh_loglevel: INFO

5.2.19 SSH MaxSessions setting. Must be 4 our less

rhel8cis_ssh_maxsessions: 4
rhel8cis_inactivelock:
    lock_days: 30

5.3.1/5.3.2 Custon authselect profile settings. Settings in place now will fail, they are place holders from the control example

rhel8cis_authselect:
    custom_profile_name: custom-profile
    default_file_to_copy: "sssd --symlink-meta"
    options: with-sudo with-faillock without-nullok

5.3.1 Enable automation to creat custom profile settings, using the setings above

rhel8cis_authselect_custom_profile_create: false

5.3.2 Enable autmoation to select custom profile options, using the settings above

rhel8cis_authselect_custom_profile_select: false

rhel8cis_pass:
    max_days: 365
    min_days: 7
    warn_age: 7
# Syslog system - either rsyslog or syslog-ng
rhel8cis_syslog: rsyslog
rhel8cis_rsyslog_ansibleManaged: true

rhel8cis_vartmp:
    source: /tmp
    fstype: none
    opts: "defaults,nodev,nosuid,noexec,bind"
    enabled: no

PAM

rhel8cis_pam_password: 
    minlen: "14"
    minclass: "4"

Starting GID for interactive users

rhel8cis_int_gid: 1000

RHEL-08-5.4.5
Session timeout setting file (TMOUT setting can be set in multiple files)
Timeout value is in seconds. (60 seconds * 10 = 600)

rhel8cis_shell_session_timeout:
    file: /etc/profile.d/tmout.sh
    timeout: 600

RHEL-08-5.4.1.5
Allow ansible to expire password for account with a last changed date in the future. False will just display users in violation, true will expire those users passwords

rhel8cis_futurepwchgdate_autofix: true

wheel users list

rhel8cis_wheel_users: "root"

Section6 vars

RHEL-08_6.1.1
Allow ansible to adjust package descrepancies . False will just display packages with descrepancies, True will correct descrepancies

rhelcis_rpm_descrep_autofixes: true

RHEL-08_6.1.10
Allow ansible to adjust world-writable files. False will just display world-writable files, True will remove world-writable

rhel8cis_no_world_write_adjust: true
rhel8cis_passwd_label: "{{ (this_item | default(item)).id }}: {{ (this_item | default(item)).dir }}"
rhel8cis_dotperm_ansibleManaged: true

Goss Audit Variables

how to get audit files onto host options
options are git/copy/get_url

rhel8cis_audit_content: git

git

rhel8cis_audit_file_git: "https://github.com/ansible-lockdown/{{ benchmark }}-Audit.git"
rhel8cis_audit_git_version: main

copy:

rhel8cis_audit_local_copy: "some path to copy from"

get_url:

rhel8cis_audit_files_url: "some url maybe s3?"

audit controls

goss_version:
  release: v0.3.16
  checksum: 'sha256:827e354b48f93bce933f5efcd1f00dc82569c42a179cf2d384b040d8a80bfbfb'

Audit Settings

#goss_checksum: "checksum_{{ goss_version }}"
goss_path: /usr/local/bin/
goss_bin: "{{ goss_path }}goss"
goss_format: documentation
goss_url: "https://github.com/aelsabbahy/goss/releases/download/{{ goss_version.release }}/goss-linux-amd64"

Goss tests information

goss_audit_dir: "/var/tmp/{{ benchmark }}-Audit/"
goss_file: "{{ goss_audit_dir }}goss.yml"
goss_vars_path: "{{ goss_audit_dir }}/vars/{{ ansible_hostname }}.yml"
goss_out_dir: '/var/tmp'
pre_audit_outfile: "{{ goss_out_dir }}/pre_remediation_scan"
post_audit_outfile: "{{ goss_out_dir }}/post_remediation_scan"

Audit_results: |
      The pre remediation results are: {{ pre_audit_summary }}.
      The post remediation results are: {{ post_audit_summary }}.
      Full breakdown can be found in {{ goss_out_dir }}
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