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kube-bench/cfg/cis-1.6-k3s/etcd.yaml
Derek Nola e1d1053358
Fix to empty grep and other cis-1.6-k3s checks (#1352)
* Fix to empty grep and other k3s checks

Signed-off-by: Derek Nola <derek.nola@suse.com>

* Lint fix

Signed-off-by: Derek Nola <derek.nola@suse.com>

Signed-off-by: Derek Nola <derek.nola@suse.com>
2023-01-13 18:06:57 +02:00

120 lines
4.5 KiB
YAML

---
controls:
version: "cis-1.6-k3s"
id: 2
text: "Etcd Node Configuration"
type: "etcd"
groups:
- id: 2
text: "Etcd Node Configuration Files"
checks:
- id: 2.1
text: "Ensure that the --cert-file and --key-file arguments are set as appropriate if use etcd as database (Automated)"
audit: grep -A 4 'client-transport-security' $etcdconf | grep -E 'cert-file|key-file'
tests:
bin_op: and
test_items:
- flag: "cert-file"
- flag: "key-file"
remediation: |
By default, K3s uses a config file for etcd that can be found at $etcdconf.
The config file contains client-transport-security: which has fields that have the peer cert and peer key files. No manual remediation needed.
scored: true
- id: 2.2
text: "Ensure that the --client-cert-auth argument is set to true (Automated)"
audit: grep 'client-cert-auth' $etcdconf
tests:
test_items:
- flag: "client-cert-auth"
compare:
op: eq
value: true
remediation: |
By default, K3s uses a config file for etcd that can be found at $etcdconf.
client-cert-auth is set to true. No manual remediation needed.
scored: true
- id: 2.3
text: "Ensure that the --auto-tls argument is not set to true (Automated)"
audit: grep 'auto-tls' $etcdconf | cat
tests:
bin_op: or
test_items:
- flag: "auto-tls"
set: false
- flag: "auto-tls"
compare:
op: eq
value: false
remediation: |
By default, K3s starts Etcd without this flag. It is set to false by default.
scored: true
- id: 2.4
text: "Ensure that the --peer-cert-file and --peer-key-file arguments are
set as appropriate (Automated)"
audit: grep -A 4 'peer-transport-security' $etcdconf | grep -E 'cert-file|key-file'
tests:
bin_op: and
test_items:
- flag: "cert-file"
- flag: "key-file"
remediation: |
By default, K3s starts Etcd with a config file found here, $etcdconf.
The config file contains peer-transport-security: which has fields that have the peer cert and peer key files.
scored: true
- id: 2.5
text: "Ensure that the --peer-client-cert-auth argument is set to true (Automated)"
audit: grep -A 4 'peer-transport-security' $etcdconf | grep 'client-cert-auth'
tests:
test_items:
- flag: "client-cert-auth"
compare:
op: eq
value: true
remediation: |
By default, K3s uses a config file for etcd that can be found at $etcdconf.
The config file contains peer-transport-security: which has client-cert-auth set to true. No manual remediation needed.
scored: true
- id: 2.6
text: "Ensure that the --peer-auto-tls argument is not set to true (Automated)"
audit: grep 'peer-auto-tls' $etcdconf | cat
tests:
bin_op: or
test_items:
- flag: "peer-auto-tls"
set: false
- flag: "peer-auto-tls"
compare:
op: eq
value: false
remediation: |
By default, K3s uses a config file for etcd that can be found at $etcdconf.
Within the file, it does not contain the peer-auto-tls field. No manual remediation needed.
scored: true
- id: 2.7
text: "Ensure that a unique Certificate Authority is used for etcd (Manual)"
audit: |
if [ -f "$etcdconf" ];then
etcd_ca=$(grep 'trusted-ca-file' $etcdconf | awk -F ":|: *" '{print $NF}');
apiserver_ca=$(journalctl -u k3s | grep "Running kube-apiserver" | tail -n1 | grep "trusted-ca-file" | awk -F "=" '{print $NF}')
if [ "$etcd_ca" == "$apiserver_ca" ]; then
echo 'etcd_and_apiserver_have_same_ca';
else
echo 'etcd_and_apiserver_ca_not_same1' ;
fi
else
echo 'etcd_and_apiserver_ca_not_same'; return ;
fi
tests:
test_items:
- flag: "etcd_and_apiserver_ca_not_same"
remediation: |
By default, K3s uses a config file for etcd that can be found at $etcdconf
and the trusted-ca-file parameters in it are set to unique values specific to etcd. No manual remediation needed.
scored: false