X-Git-Url: https://gerrit.akraino.org/r/gitweb?a=blobdiff_plain;ds=sidebyside;f=roles%2Fops-hardening%2Ftasks%2Fmain.yaml;h=fdf6512a635c7e7edc89e29d4acbfe54e8515ce9;hb=2dfb03eebd138f9c7d52d962ab7468eb248fd23e;hp=5558cd0296aa25f0f56cc34493af5fa8d20b1314;hpb=3a7fca60d2a33657024ad83011ee233c879b416a;p=ta%2Finfra-ansible.git

diff --git a/roles/ops-hardening/tasks/main.yaml b/roles/ops-hardening/tasks/main.yaml
index 5558cd0..fdf6512 100644
--- a/roles/ops-hardening/tasks/main.yaml
+++ b/roles/ops-hardening/tasks/main.yaml
@@ -66,9 +66,35 @@
     regexp: '^PASS_MIN_DAYS[\s]*[0-9]*$'
     line: 'PASS_MIN_DAYS   0'
 
+- name: "Set password hash to SHA512"
+  lineinfile:
+    path: /etc/login.defs
+    regexp: '^ENCRYPT_METHOD[\s]*[a-z0-9]*$'
+    line: 'ENCRYPT_METHOD   SHA512'
+
+- name: "Set minimum number of password hash rounds"
+  lineinfile:
+    path: /etc/login.defs
+    regexp: '^SHA_CRYPT_MIN_ROUNDS[\s]*[0-9]*$'
+    line: 'SHA_CRYPT_MIN_ROUNDS   10000'
+
+- name: "Set maximum number of password hash rounds"
+  lineinfile:
+    path: /etc/login.defs
+    regexp: '^SHA_CRYPT_MAX_ROUNDS[\s]*[0-9]*$'
+    line: 'SHA_CRYPT_MAX_ROUNDS   10000'
+
 #
 # Linux Failed password attempts
 #
+- name: "Ensure authconfig is properly configured"
+  command: authconfig --updateall
+  with_items:
+    - /etc/pam.d/system-auth-ac
+    - /etc/pam.d/password-auth-ac
+  when: not (item|exists and item|is_file)
+  tags:
+    - REC-443
 
 - name: "Set Deny for failed password attempts 1"
   lineinfile:
@@ -204,6 +230,14 @@
   when:
     - item.stat.exists == true
 
+- name: Limit access to the assembler binary
+  file:
+    path: "/usr/bin/as"
+    state: file
+    mode: "0700"
+    owner: root
+    group: root
+
 #
 # Disable direct root login
 #
@@ -247,8 +281,7 @@
     state: absent
     regexp: '^tcp6.*'
 
-- name: Disable automatic ipv6 configuration
-  when: ansible_default_ipv6|length > 0
+- name: Disable automatic ipv6 configuration and routing
   sysctl:
     name: "{{ item.name }}"
     value: "{{ item.value }}"
@@ -256,12 +289,13 @@
     reload: yes
   with_items:
     - { name: 'net.ipv6.conf.all.accept_source_route', value: 0 }
+    - { name: 'net.ipv6.conf.default.accept_source_route', value: 0 }
     - { name: 'net.ipv6.conf.all.accept_ra', value: 0 }
     - { name: 'net.ipv6.conf.default.accept_ra', value: 0 }
     - { name: 'net.ipv6.conf.all.accept_redirects', value: 0 }
     - { name: 'net.ipv6.conf.default.accept_redirects', value: 0 }
-    - { name: 'net.ipv6.conf.default.accept_source_route', value: 0 }
     - { name: 'net.ipv6.conf.all.forwarding', value: 0 }
+    - { name: 'net.ipv6.conf.default.forwarding', value: 0 }
 
 #
 # Configure kernel parameters
@@ -291,6 +325,9 @@
     - { name: 'kernel.core_uses_pid', value: 1 }
     - { name: 'kernel.randomize_va_space', value: 2 }
     - { name: 'kernel.core_pattern', value: '/var/core/core'}
+    - { name: 'kernel.kptr_restrict', value: 2 }
+    - { name: 'kernel.sysrq', value: 0 }
+    - { name: 'kernel.yama.ptrace_scope', value: 3 }
 
 #
 # Configure core dump
@@ -309,6 +346,13 @@
     line: 'Storage=none'
 
 #
+# Confingure kernel dump
+- name: "Disable kernel dump service"
+  shell: systemctl stop kdump.service
+
+- name: "Disable kernel dump service"
+  shell: systemctl disable kdump.service
+
 # Configure syslog
 #
 - name: "Stop rsyslog Service"
@@ -434,6 +478,75 @@
     state: absent
 
 #
+# tighten USB permissions
+#
+- name: Set USBGuard RestoreControllerDeviceState to false
+  lineinfile:
+    path: /etc/usbguard/usbguard-daemon.conf
+    regexp: '^[#\s]*RestoreControllerDeviceState\s*=\s*[a-z\-]*\s*$'
+    line: 'RestoreControllerDeviceState=false'
+
+- name: Set USBGuard ImplicitPolicyTarget to block
+  lineinfile:
+    path: /etc/usbguard/usbguard-daemon.conf
+    regexp: '^[#\s]*ImplicitPolicyTarget\s*=\s*[a-z\-]*\s*$'
+    line: 'ImplicitPolicyTarget=block'
+
+- name: Apply USBGuard policy in all cases
+  lineinfile:
+    path: /etc/usbguard/usbguard-daemon.conf
+    regexp: "^[#\\s]*{{ item }}\\s*=\\s*[a-z\\-]*\\s*$"
+    line: "{{ item }}=apply-policy"
+  with_items:
+    - PresentControllerPolicy
+    - PresentDevicePolicy
+    - InsertedDevicePolicy
+
+- name: Limit USBGuard IPC to root
+  lineinfile:
+    path: /etc/usbguard/usbguard-daemon.conf
+    regexp: "^[#\\s]*IPCAllowed{{item}}\\s*="
+    line: "IPCAllowed{{item}}=root"
+  with_items:
+    - Users
+    - Groups
+
+- Name: Ban suspect USB devices
+  blockinfile:
+    # this isn't the optimal way to do this, i know, but i don't
+    # want to create a whole new template tree just to add this.
+    path: /etc/usbguard/rules.conf
+    create: yes
+    owner: root
+    group: root
+    mode: 0700
+    insertbefore: BOF
+    # rules.conf doesn't seem to allow comments
+    marker: ''
+    block: |
+     # the akraino REC is targeted at server installs; as such
+     # we're liberal about allowing standard devices on the
+     # assumption we will be deployed in a relatively secure
+     # environment.  The values below were chosen based on the
+     # devices that appear on a nokia OE19 with the virtual console
+     # enabled:
+     # xHCI controller/hub
+     allow with-interface equals { 09:00:00 }
+     # mass media — sites may want to consider restricting
+     # this to 08:06:50 to just get the virtual CDROM and ban
+     # other USB media
+     allow with-interface equals { 08:*:* }
+     # ethernet
+     allow with-interface equals { 02:02:ff }
+     # keyboard/mouse
+     allow with-interface one-of { 03:00:01 03:01:01 }
+     # per usbguard-rules.conf manpage: ban keyboard devices
+     # that expose other, suspicious, interfaces
+     reject with-interface all-of { 08:*:* 03:00:* }
+     reject with-interface all-of { 08:*:* 03:01:* }
+     reject with-interface all-of { 08:*:* e0:*:* }
+     reject with-interface all-of { 08:*:* 02:*:* }
+
 # Setting file permissions
 #