Jan24 - changes and updates

Changelog.md

@@ -2,6 +2,16 @@
 
 ## Based on CIS V1.0.0
 
+### 1.0.9
+
+- updated audit command to allow multiple groups from inventory
+- #144 usb-blacklisting - thanks to @paulquevedojdrf
+- #152 and #170 Added ssh validate to tasks - thanks to @dderemiah and @twadelij
+- #180 and #181 password reuse 5.3.4 - thanks to @DianaMariaDDM
+- #182 pwquality enhancement New variable to allow extended or minclass (default)options - thanks to @ma3s7ro
+- #184 Initial container config feedback required - thanks to @ipruteanu-sie
+- #204 reboot not idempotent - changed auditd and reboot logic update to 4.1.3.6 discovery - thanks to @bhuddah
+
 ### 1.0.8
 
 - updated goss binary to 0.4.4

defaults/main.yml

@@ -40,7 +40,7 @@ ubtu22cis_ask_passwd_to_boot: false
 # is executed on a container image and sets the variable
 # system_is_container the true. Otherwise, the default value
 # 'false' is left unchanged.
-system_is_container: false
+container_vars_file: is_container.yml
 
 ## Root user used
 # Root by default is not used unless setup by user
@@ -940,6 +940,26 @@ ubtu22cis_sudo_timestamp_timeout: 15
 # CIS requires that such a group be created (named according to site policy) and be kept empty.
 ubtu22cis_sugroup: nosugroup
 
+## Control 5.4.1
+# This variable allows us to use either
+#
+
+ubtu22cis_pwquality_minclass: true
+ubtu22cis_pwquality_minclass_value: '4'
+ubtu22cis_pwquality:
+    - key: '#minclass'
+      value: "{{ ubtu22cis_pwquality_minclass_value }}"
+    - key: 'minlen'
+      value: '14'
+    - key: 'dcredit'
+      value: '-1'
+    - key: 'ucredit'
+      value: '-1'
+    - key: 'ocredit'
+      value: '-1'
+    - key: 'lcredit'
+      value: '-1'
+
 ## Control 5.4.3
 # This variable represents the number of password change cycles, after which
 # a user can re-use a password.

handlers/main.yml

@@ -1,5 +1,9 @@
 ---
 
+- name: Update_Initramfs
+  ansible.builtin.shell: update-initramfs -u
+  notify: change_requires_reboot
+
 - name: Remount tmp
   ansible.posix.mount:
       path: /tmp
@@ -39,6 +43,7 @@
 - name: Grub update
   ansible.builtin.shell: update-grub
   failed_when: false
+  notify: change_requires_reboot
 
 - name: Restart timeservice
   ansible.builtin.systemd:
@@ -110,31 +115,21 @@
   when:
       - '"No change" not in ubtu22cis_rule_4_1_3_21_augen_check.stdout'
 
-- name: Auditd_immutable_check
-  ansible.builtin.shell: grep -c "^-e 2" /etc/audit/rules.d/99_auditd.rules
-  changed_when: false
-  register: auditd_immutable_check
-
 - name: Audit_immutable_fact
   ansible.builtin.debug:
       msg: "Reboot required for auditd to apply new rules as immutable set"
   notify: change_requires_reboot
   when:
-      - auditd_immutable_check.stdout == '1'
+      - audit_rules_updated.changed
+      - auditd_immutable_check is defined
 
 - name: Restart auditd
   ansible.builtin.shell: service auditd restart
   when:
-      - audit_rules_updated.changed or
-        rule_4_1_2_1.changed or
-        rule_4_1_2_2.changed or
-        rule_4_1_2_3.changed
+      - audit_rules_updated is defined
   tags:
       - skip_ansible_lint
 
-- name: remount tmp
-  ansible.builtin.shell: mount -o remount /tmp
-
 - name: restart sshd
   ansible.builtin.systemd:
       name: sshd

tasks/auditd.yml

@@ -6,13 +6,13 @@
       dest: /etc/audit/rules.d/99_auditd.rules
       owner: root
       group: root
-      mode: '0600'
+      mode: '0640'
   register: audit_rules_updated
   notify:
       - Auditd rules reload
-      - Auditd_immutable_check
       - Audit_immutable_fact
       - Restart auditd
+      - change_requires_reboot
   when: update_audit_template
 
 - name: POST | Set up auditd user logging exceptions
@@ -25,19 +25,3 @@
   notify: Restart auditd
   when:
       - ubtu22cis_allow_auditd_uid_user_exclusions
-
-# - name: "POST | AUDITD | Discover if auditd immutable - Set reboot required if auditd immutable"
-#   block:
-#       - name: "POST | AUDITD | Discover if auditd immutable - Set reboot required if auditd immutable | Get status"
-#         ansible.builtin.shell: grep -c "^-e 2" /etc/audit/rules.d/99_auditd.rules
-#         changed_when: false
-#         failed_when: false
-#         register: ubtu22cis_auditd_immutable_check
-
-#       - name: "POST | AUDITD | Discover if auditd immutable - Set reboot required if auditd immutable | Set reboot required"
-#         ansible.builtin.debug:
-#             msg: "Reboot required for auditd to apply new rules as immutable set"
-#         notify: change_requires_reboot
-#         when: ubtu22cis_auditd_immutable_check.stdout == '1'
-#   when:
-#       - ubtu22cis_audit_rules_update.changed

tasks/main.yml

@@ -208,13 +208,15 @@
         ansible.builtin.reboot:
         when:
             - not skip_reboot
+            - change_requires_reboot
 
       - name: Warning a reboot required but skip option set
         ansible.builtin.debug:
             msg: "Warning!! changes have been made that require a reboot to be implemented but skip reboot was set - Can affect compliance check results"
         changed_when: true
         when:
             - skip_reboot
+            - change_requires_reboot
 
 - name: Run post remediation audit
   ansible.builtin.import_tasks:

tasks/post_remediation_audit.yml

@@ -1,7 +1,7 @@
 ---
 
 - name: Post Audit | Run post_remediation {{ benchmark }} audit
-  ansible.builtin.shell: "{{ audit_conf_dir }}/run_audit.sh -v {{ audit_vars_path }} -o {{ post_audit_outfile }} -g {{ group_names }}"
+  ansible.builtin.shell: "{{ audit_conf_dir }}/run_audit.sh -v {{ audit_vars_path }} -o {{ post_audit_outfile }} -g \"{{ group_names }}\""
   changed_when: true
   environment:
       AUDIT_BIN: "{{ audit_bin }}"

tasks/pre_remediation_audit.yml

@@ -77,7 +77,7 @@
       mode: '0600'
 
 - name: Pre Audit | Run pre_remediation {{ benchmark }} audit
-  ansible.builtin.shell: "{{ audit_conf_dir }}/run_audit.sh -v {{ audit_vars_path }} -o {{ pre_audit_outfile }} -g {{ group_names }}"
+  ansible.builtin.shell: "{{ audit_conf_dir }}/run_audit.sh -v {{ audit_vars_path }} -o {{ pre_audit_outfile }} -g \"{{ group_names }}\""
   changed_when: true
   environment:
       AUDIT_BIN: "{{ audit_bin }}"

tasks/prelim.yml

@@ -133,6 +133,15 @@
       - auditd
       - always
 
+- name: "PRELIM | Check if auditd is immutable before changes"
+  ansible.builtin.shell: auditctl -l | grep -c '-e 2'
+  changed_when: false
+  failed_when: auditd_immutable_check.rc not in [ 0, 1 ]
+  register: auditd_immutable_check
+  when: "'auditd' in ansible_facts.packages"
+  tags:
+      - always
+
 - name: "PRELIM | 5.3.4 | 5.3.5 | Find all sudoers files."
   ansible.builtin.shell: "find /etc/sudoers /etc/sudoers.d/ -type f ! -name '*~' ! -name '*.*'"
   changed_when: false
@@ -216,12 +225,6 @@
   tags:
       - always
 
-- name: "PRELIM | Recapture packages"
-  ansible.builtin.package_facts:
-      manager: auto
-  tags:
-      - always
-
 - name: "Optional | Patch | UFW firewall force to use /etc/sysctl.conf settings"
   ansible.builtin.lineinfile:
       path: /etc/default/ufw

tasks/section_1/cis_1.1.1.x.yml

@@ -22,6 +22,7 @@
             name: cramfs
             state: absent
         when: ansible_connection != 'docker'
+  notify: Update_Initramfs
   when:
       - ubtu22cis_rule_1_1_1_1
   tags:
@@ -54,6 +55,7 @@
             name: squashfs
             state: absent
         when: ansible_connection != 'docker'
+  notify: Update_Initramfs
   when:
       - ubtu22cis_rule_1_1_1_2
       - snap_pkg_mgr.stdout == "0"
@@ -88,6 +90,7 @@
             name: udf
             state: absent
         when: ansible_connection != 'docker'
+  notify: Update_Initramfs
   when:
       - ubtu22cis_rule_1_1_1_3
   tags:

tasks/section_1/cis_1.1.10.yml

@@ -20,6 +20,7 @@
             name: usb-storage
             state: absent
         when: ansible_connection != 'docker'
+  notify: Update_Initramfs
   when:
       - ubtu22cis_rule_1_1_10
       - not ubtu22cis_allow_usb_storage

tasks/section_1/cis_1.1.2.x.yml

@@ -65,7 +65,7 @@
       state: present
       fstype: "{{ item.fstype }}"
       opts: defaults,{% if ubtu22cis_rule_1_1_2_2 %}nodev,{% endif %}{% if ubtu22cis_rule_1_1_2_3 %}noexec,{% endif %}{% if ubtu22cis_rule_1_1_2_4 %}nosuid{% endif %}
-  notify: remount tmp
+  notify: Remount tmp
   with_items:
       - "{{ ansible_facts.mounts }}"
   loop_control:

tasks/section_1/main.yml

@@ -7,10 +7,12 @@
 - name: "SECTION | 1.1.2 | configure /tmp"
   ansible.builtin.import_tasks:
       file: cis_1.1.2.x.yml
+  when: not system_is_container
 
 - name: "SECTION | 1.1.3 | configure /var"
   ansible.builtin.import_tasks:
       file: cis_1.1.3.x.yml
+  when: not system_is_container
 
 - name: "SECTION | 1.1.4 | configure /var/tmp"
   ansible.builtin.import_tasks:
@@ -19,30 +21,37 @@
 - name: "SECTION | 1.1.5 | configure /var/log"
   ansible.builtin.import_tasks:
       file: cis_1.1.5.x.yml
+  when: not system_is_container
 
 - name: "SECTION | 1.1.6 | configure /var/log/audit"
   ansible.builtin.import_tasks:
       file: cis_1.1.6.x.yml
+  when: not system_is_container
 
 - name: "SECTION | 1.1.7 | configure /home"
   ansible.builtin.import_tasks:
       file: cis_1.1.7.x.yml
+  when: not system_is_container
 
 - name: "SECTION | 1.1.8 | configure /dev/shm"
   ansible.builtin.import_tasks:
       file: cis_1.1.8.x.yml
+  when: not system_is_container
 
 - name: "SECTION | 1.1.9 | configure software updates"
   ansible.builtin.import_tasks:
       file: cis_1.1.9.yml
+  when: not system_is_container
 
 - name: "SECTION | 1.1.10 | Disable USB storage"
   ansible.builtin.import_tasks:
       file: cis_1.1.10.yml
+  when: not system_is_container
 
 - name: "SECTION | 1.2 | Configure Software Updates"
   ansible.builtin.import_tasks:
       file: cis_1.2.x.yml
+  when: not system_is_container
 
 - name: "SECTION | 1.3. | Filesystem Integrity Checking"
   ansible.builtin.import_tasks:
@@ -55,6 +64,7 @@
 - name: "SECTION | 1.5 | Additional Process Hardening"
   ansible.builtin.import_tasks:
       file: cis_1.5.x.yml
+  when: not system_is_container
 
 - name: "SECTION | 1.6 | Mandatory Access Control"
   ansible.builtin.import_tasks:
@@ -67,8 +77,11 @@
 - name: "SECTION | 1.8 | GNOME Display Manager"
   ansible.builtin.import_tasks:
       file: cis_1.8.x.yml
-  when: "'gdm3' in ansible_facts.packages"
+  when:
+      - "'gdm3' in ansible_facts.packages"
+      - not system_is_container
 
 - name: "SECTION | 1.9 | Ensure updates, patches, and additional security software are installed"
   ansible.builtin.import_tasks:
       file: cis_1.9.yml
+  when: not system_is_container

tasks/section_4/cis_4.1.3.x.yml

@@ -70,7 +70,7 @@
 - name: "4.1.3.6 | PATCH | Ensure use of privileged commands is collected"
   block:
       - name: "4.1.3.6 | AUDIT | Ensure use of privileged commands is collected | Get list of privileged programs"
-        ansible.builtin.shell: for i in  $(findmnt -n -l -k -it $(awk '/nodev/ { print $2 }' /proc/filesystems | paste -sd,) | grep -Pv "noexec|nosuid" | awk '{print $1}'); do find $i -xdev -type f -perm -4000 -o -type f -perm -2000 2>/dev/null; done
+        ansible.builtin.shell: for i in  $(findmnt -n -l -k -it $(awk '/nodev/ { print $2 }' /proc/filesystems | paste -sd,) | grep -Pv "noexec|nosuid" | awk '{print $1}'); do find $i -xdev -type f -perm -4000 -o -type f -perm -2000 2>/dev/null; done | grep -vw '/snap'
         register: priv_procs
         changed_when: false
         check_mode: false

tasks/section_5/cis_5.2.x.yml

@@ -123,7 +123,7 @@
   ansible.builtin.lineinfile:
       path: /etc/ssh/sshd_config
       regexp: '^LogLevel|^#LogLevel'
-      line: 'LogLevel {{ ubtu22cis_sshd.log_level }}'
+      line: "LogLevel {{ ubtu22cis_sshd.log_level }}"
       insertafter: '^# Logging'
       validate: 'sshd -t -f %s'
   notify: restart sshd

tasks/section_5/cis_5.3.x.yml

@@ -114,7 +114,6 @@
 
 - name: "5.3.7 | PATCH | Ensure access to the su command is restricted"
   block:
-
       - name: "5.3.7 | PATCH | Ensure access to the su command is restricted | Ensure sugroup exists"
         ansible.builtin.group:
             name: "{{ ubtu22cis_sugroup }}"

tasks/section_5/cis_5.4.x.yml

@@ -16,8 +16,17 @@
       - name: "5.4.1 | PATCH | Ensure password creation requirements are configured | Add minclass"
         ansible.builtin.lineinfile:
             path: /etc/security/pwquality.conf
-            regexp: '^minclass|^# minclass'
-            line: 'minclass = 4'
+            regexp: ^minclass
+            line: "minclass = {{ ubtu22cis_pwquality_minclass_value }}"
+        when: ubtu22cis_pwquality_minclass
+
+      - name: "5.4.1 | PATCH | Ensure password creation requirements are configured | Add extended keys"
+        ansible.builtin.lineinfile:
+            path: /etc/security/pwquality.conf
+            regexp: ^{{ item.key }}
+            line: "{{ item.key }} = {{ item.value }}"
+        loop: "{{ ubtu22cis_pwquality }}"
+        when: not ubtu22cis_pwquality_minclass
 
       - name: "5.4.1 | AUDIT | Ensure password creation requirements are configured | Confirm pwquality module in common-password"
         ansible.builtin.shell: grep 'password.*requisite.*pam_pwquality.so' /etc/pam.d/common-password

tasks/section_5/main.yml

@@ -7,14 +7,17 @@
 - name: "SECTION | 5.2 | Configure sudo"
   ansible.builtin.import_tasks:
       file: cis_5.2.x.yml
+  when: not system_is_container
 
 - name: "SECTION | 5.3 | Configure SSH Server"
   ansible.builtin.import_tasks:
       file: cis_5.3.x.yml
+  when: not system_is_container
 
 - name: "SECTION | 5.4.x | User PAM"
   ansible.builtin.import_tasks:
       file: cis_5.4.x.yml
+  when: not system_is_container
 
 - name: "SECTION | 5.5.x | User Accounts and Environment"
   ansible.builtin.import_tasks: