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added args warn for shell

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Signed-off-by: Mark Bolwell <mark.bollyuk@gmail.com>
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Mark Bolwell 2022-01-13 12:08:30 +00:00
parent 66814a6f01
commit 95d8152603
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GPG key ID: F734FDFC154B83FB
24 changed files with 187 additions and 24 deletions
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58
tasks/section_3/cis_3.4.3.x.yml
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@ -2,6 +2,8 @@
- name: "3.4.3.1 | L1 | PATCH | Ensure iptables are flushed with nftables"
shell: ip6tables -F
args:
warn: false
when:
- rhel9cis_rule_3_4_3_1
- rhel9cis_firewall != "iptables"
@ -16,6 +18,8 @@
block:
- name: "3.4.3.2 | L1 | AUDIT | Ensure a table exists | Check for tables"
shell: nft list tables
args:
warn: false
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_2_nft_tables
@ -38,6 +42,8 @@
- name: "3.4.3.2 | L1 | PATCH | Ensure a table exists | Create table if needed"
shell: nft create table inet "{{ rhel9cis_nft_tables_tablename }}"
args:
warn: false
failed_when: no
when: rhel9cis_nft_tables_autonewtable
when:
@ -53,18 +59,24 @@
block:
- name: "3.4.3.3 | L1 | Ensure nftables base chains exist | Get current chains for INPUT"
shell: nft list ruleset | grep 'hook input'
args:
warn: false
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_3_input_chains
- name: "3.4.3.3 | L1 | AUDIT | Ensure nftables base chains exist | Get current chains for FORWARD"
shell: nft list ruleset | grep 'hook forward'
args:
warn: false
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_3_forward_chains
- name: "3.4.3.3 | L1 | AUDIT | Ensure nftables base chains exist | Get current chains for OUTPUT"
shell: nft list ruleset | grep 'hook output'
args:
warn: false
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_3_output_chains
@ -83,7 +95,7 @@
- name: "3.4.3.3 | L1 | PATCH | Ensure nftables base chains exist | Create chains if needed"
shell: "{{ item }}"
args:
warn: no
warn: false
failed_when: no
with_items:
- nft create chain inet "{{ rhel9cis_nft_tables_tablename }}" input { type filter hook input priority 0 \; }
@ -103,32 +115,44 @@
block:
- name: "3.4.3.4 | L1 | AUDIT | Ensure nftables loopback traffic is configured | Gather iif lo accept existence"
shell: nft list ruleset | awk '/hook input/,/}/' | grep 'iif "lo" accept'
args:
warn: false
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_4_iiflo
- name: "3.4.3.4 | L1 | AUDIT | Ensure nftables loopback traffic is configured | Gather ip saddr existence"
shell: nft list ruleset | awk '/hook input/,/}/' | grep 'ip saddr'
args:
warn: false
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_4_ipsaddr
- name: "3.4.3.4 | L1 | AUDIT | Ensure nftables loopback traffic is configured | Gather ip6 saddr existence"
shell: nft list ruleset | awk '/hook input/,/}/' | grep 'ip6 saddr'
args:
warn: false
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_4_ip6saddr
- name: "3.4.3.4 | L1 | PATCH | Ensure nftables loopback traffic is configured | Set iif lo accept rule"
shell: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" input iif lo accept
args:
warn: false
when: '"iif \"lo\" accept" not in rhel9cis_3_4_3_4_iiflo.stdout'
- name: "3.4.3.4 | L1 | PATCH | Ensure nftables loopback traffic is configured | Set ip sddr rule"
shell: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" input ip saddr 127.0.0.0/8 counter drop
args:
warn: false
when: '"ip saddr 127.0.0.0/8 counter packets 0 bytes 0 drop" not in rhel9cis_3_4_3_4_ipsaddr.stdout'
- name: "3.4.3.4 | L1 | PATCH | Ensure nftables loopback traffic is configured | Set ip6 saddr rule"
shell: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" input ip6 saddr ::1 counter drop
args:
warn: false
when: '"ip6 saddr ::1 counter packets 0 bytes 0 drop" not in rhel9cis_3_4_3_4_ip6saddr.stdout'
when:
- rhel9cis_firewall == "nftables"
@ -143,38 +167,54 @@
block:
- name: "3.4.3.5 | L1 | AUDIT | Ensure nftables outbound and established connections are configured | Gather incoming connection rules"
shell: nft list ruleset | awk '/hook input/,/}/' | grep -E 'ip protocol (tcp|udp|icmp) ct state'
args:
warn: false
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_5_inconnectionrule
- name: "3.4.3.5 | L1 | AUDIT | Ensure nftables outbound and established connections are configured | Gather outbound connection rules"
shell: nft list ruleset | awk '/hook output/,/}/' | grep -E 'ip protocol (tcp|udp|icmp) ct state'
args:
warn: false
changed_when: false
failed_when: false
register: rhel9cis_3_4_3_5_outconnectionrule
- name: "3.4.3.5 | L1 | PATCH | Ensure nftables outbound and established connections are configured | Add input tcp established accept policy"
shell: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" input ip protocol tcp ct state established accept
args:
warn: false
when: '"ip protocol tcp ct state established accept" not in rhel9cis_3_4_3_5_inconnectionrule.stdout'
- name: "3.4.3.5 | L1 | PATCH | Ensure nftables outbound and established connections are configured | Add input udp established accept policy"
shell: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" input ip protocol udp ct state established accept
args:
warn: false
when: '"ip protocol udp ct state established accept" not in rhel9cis_3_4_3_5_inconnectionrule.stdout'
- name: "3.4.3.5 | L1 | PATCH | Ensure nftables outbound and established connections are configured | Add input icmp established accept policy"
shell: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" input ip protocol icmp ct state established accept
args:
warn: false
when: '"ip protocol icmp ct state established accept" not in rhel9cis_3_4_3_5_inconnectionrule.stdout'
- name: "3.4.3.5 | L1 | PATCH | Ensure nftables outbound and established connections are configured | Add output tcp new, related, established accept policy"
shell: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" output ip protocol tcp ct state new,related,established accept
args:
warn: false
when: '"ip protocol tcp ct state established,related,new accept" not in rhel9cis_3_4_3_5_outconnectionrule.stdout'
- name: "3.4.3.5 | L1 | PATCH | Ensure nftables outbound and established connections are configured | Add output udp new, related, established accept policy"
shell: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" output ip protocol udp ct state new,related,established accept
args:
warn: false
when: '"ip protocol udp ct state established,related,new accept" not in rhel9cis_3_4_3_5_outconnectionrule.stdout'
- name: "3.4.3.5 | L1 | PATCH | Ensure nftables outbound and established connections are configured | Add output icmp new, related, established accept policy"
shell: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" output ip protocol icmp ct state new,related,established accept
args:
warn: false
when: '"ip protocol icmp ct state established,related,new accept" not in rhel9cis_3_4_3_5_outconnectionrule.stdout'
when:
- rhel9cis_firewall == "nftables"
@ -189,42 +229,58 @@
block:
- name: "3.4.3.6 | L1 | AUDIT | Ensure nftables default deny firewall policy | Check for hook input deny policy"
shell: nft list table inet "{{ rhel9cis_nft_tables_tablename }}" | grep 'hook input'
args:
warn: false
failed_when: false
changed_when: false
register: rhel9cis_3_4_3_6_inputpolicy
- name: "3.4.3.6 | L1 | AUDIT | Ensure nftables default deny firewall policy | Check for hook forward deny policy"
shell: nft list table inet "{{ rhel9cis_nft_tables_tablename }}" | grep 'hook forward'
args:
warn: false
failed_when: false
changed_when: false
register: rhel9cis_3_4_3_6_forwardpolicy
- name: "3.4.3.6 | L1 | AUDIT | Ensure nftables default deny firewall policy | Check for hook output deny policy"
shell: nft list table inet "{{ rhel9cis_nft_tables_tablename }}" | grep 'hook output'
args:
warn: false
failed_when: false
changed_when: false
register: rhel9cis_3_4_3_6_outputpolicy
- name: "3.4.3.6 | L1 | AUDIT | Ensure nftables default deny firewall policy | Check for SSH allow"
shell: nft list table inet "{{ rhel9cis_nft_tables_tablename }}" | grep 'ssh'
args:
warn: false
failed_when: false
changed_when: false
register: rhel9cis_3_4_3_6_sshallowcheck
- name: "3.4.3.6 | L1 | PATCH | Ensure nftables default deny firewall policy | Enable SSH traffic"
shell: nft add rule inet "{{ rhel9cis_nft_tables_tablename }}" input tcp dport ssh accept
args:
warn: false
when: '"tcp dport ssh accept" not in rhel9cis_3_4_3_6_sshallowcheck.stdout'
- name: "3.4.3.6 | L1 | PATCH | Ensure nftables default deny firewall policy | Set hook input deny policy"
shell: nft chain inet "{{ rhel9cis_nft_tables_tablename }}" input { policy drop \; }
args:
warn: false
when: '"type filter hook input priority 0; policy drop;" not in rhel9cis_3_4_3_6_inputpolicy.stdout'
- name: "3.4.3.6 | L1 | PATCH | Ensure nftables default deny firewall policy | Create hook forward deny policy"
shell: nft chain inet "{{ rhel9cis_nft_tables_tablename }}" forward { policy drop \; }
args:
warn: false
when: '"type filter hook forward priority 0; policy drop;" not in rhel9cis_3_4_3_6_forwardpolicy.stdout'
- name: "3.4.3.6 | L1 | PATCH | Ensure nftables default deny firewall policy | Create hook output deny policy"
shell: nft chain inet "{{ rhel9cis_nft_tables_tablename }}" output { policy drop \; }
args:
warn: false
when: '"type filter hook output priority 0; policy drop;" not in rhel9cis_3_4_3_6_outputpolicy.stdout'
when:
- rhel9cis_firewall == "nftables"