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Merge pull request #2350 from paraglade/security_doc_updates
updates for security documentation
This commit is contained in:
Nelson Roberts
@@ -29,13 +29,6 @@ Scoring the commands is different in Rancher Labs than in the CIS Benchmark. Whe
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When performing the tests, you will need access to the Docker command line on the hosts of all three RKE roles. The commands also make use of the the `jq` command to provide human-readable formatting.
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#### Known Scored Control Failures
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The following scored controls do not currently pass, and Rancher Labs is working towards addressing these through future enhancements to the product.
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- 1.1.21 - Ensure that the `--kubelet-certificate-authority` argument is set as appropriate (Scored)
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- 2.1.8 - Ensure that the `--hostname-override` argument is not set (Scored)
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### Controls
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---
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@@ -148,7 +141,7 @@ docker inspect kube-apiserver | jq -e '.[0].Args[] | match("--profiling=false").
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**Note:** This deprecated flag was removed in 1.14, so it cannot be set.
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**Result:** Pass
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**Result:** Not Applicable
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#### 1.1.10 - Ensure that the admission control plugin `AlwaysAdmit` is not set (Scored)
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@@ -326,7 +319,7 @@ docker inspect kube-apiserver | jq -e '.[0].Args[] | match("--kubelet-certificat
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**Returned Value:** none
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**Result:** Fail (See Mitigation)
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**Result:** Pass
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#### 1.1.22 - Ensure that the `--kubelet-client-certificate` and `--kubelet-client-key` arguments are set as appropriate (Scored)
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@@ -756,17 +749,9 @@ docker inspect kube-controller-manager | jq -e '.[0].Args[] | match("--root-ca-f
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**Notes**
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RKE does not yet support certificate rotation. This feature is due for the 0.1.12 release of RKE.
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RKE handles certificate rotation through an external process.
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**Audit**
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``` bash
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docker inspect kube-controller-manager | jq -e '.[0].Args[] | match("--feature-gates=.*(RotateKubeletServerCertificate=true).*").captures[].string'
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```
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**Returned Value:** `RotateKubeletServerCertificate=true`
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**Result:** Pass
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**Result:** Not Applicable
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#### 1.3.7 - Ensure that the `--address` argument is set to 127.0.0.1 (Scored)
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@@ -788,7 +773,7 @@ docker inspect kube-controller-manager | jq -e '.[0].Args[] | match("--address=1
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RKE doesn't require or maintain a configuration file for kube-apiserver. All configuration is passed in as arguments at container run time.
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**Result:** Pass (Not Applicable)
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**Result:** Not Applicable
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#### 1.4.2 - Ensure that the API server pod specification file ownership is set to `root:root` (Scored)
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@@ -796,7 +781,7 @@ RKE doesn't require or maintain a configuration file for kube-apiserver. All con
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RKE doesn't require or maintain a configuration file for kube-apiserver. All configuration is passed in as arguments at container run time.
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**Result:** Pass (Not Applicable)
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**Result:** Not Applicable
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#### 1.4.3 - Ensure that the controller manager pod specification file permissions are set to `644` or more restrictive (Scored)
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@@ -804,7 +789,7 @@ RKE doesn't require or maintain a configuration file for kube-apiserver. All con
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RKE doesn't require or maintain a configuration file for `kube-controller-manager`. All configuration is passed in as arguments at container run time.
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**Result:** Pass (Not Applicable)
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**Result:** Not Applicable
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#### 1.4.4 - Ensure that the controller manager pod specification file ownership is set to `root:root` (Scored)
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@@ -812,7 +797,7 @@ RKE doesn't require or maintain a configuration file for `kube-controller-manage
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RKE doesn't require or maintain a configuration file for `kube-controller-manager`. All configuration is passed in as arguments at container run time.
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**Result:** Pass (Not Applicable)
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**Result:** Not Applicable
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#### 1.4.5 - Ensure that the scheduler pod specification file permissions are set to `644` or more restrictive (Scored)
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@@ -820,7 +805,7 @@ RKE doesn't require or maintain a configuration file for `kube-controller-manage
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RKE doesn't require or maintain a configuration file for `kube-scheduler`. All configuration is passed in as arguments at container run time.
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**Result:** Pass (Not Applicable)
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**Result:** Not Applicable
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#### 1.4.6 - Ensure that the scheduler pod specification file ownership is set to `root:root` (Scored)
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@@ -828,7 +813,7 @@ RKE doesn't require or maintain a configuration file for `kube-scheduler`. All c
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RKE doesn't require or maintain a configuration file for kube-scheduler. All configuration is passed in as arguments at container run time.
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**Result:** Pass (Not Applicable)
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**Result:** Not Applicable
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#### 1.4.7 - Ensure that the `etcd` pod specification file permissions are set to `644` or more restrictive (Scored)
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@@ -836,7 +821,7 @@ RKE doesn't require or maintain a configuration file for kube-scheduler. All con
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RKE doesn't require or maintain a configuration file for etcd. All configuration is passed in as arguments at container run time.
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**Result:** Pass (Not Applicable)
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**Result:** Not Applicable
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#### 1.4.8 - Ensure that the `etcd` pod specification file ownership is set to `root:root` (Scored)
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@@ -844,7 +829,7 @@ RKE doesn't require or maintain a configuration file for etcd. All configuration
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RKE doesn't require or maintain a configuration file for etcd. All configuration is passed in as arguments at container run time.
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**Result:** Pass (Not Applicable)
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**Result:** Not Applicable
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#### 1.4.9 - Ensure that the Container Network Interface file permissions are set to `644` or more restrictive (Not Scored)
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@@ -965,7 +950,7 @@ stat -c %U:%G /var/lib/rancher/etcd
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RKE does not store the kubernetes default kubeconfig credentials file on the nodes. It's presented to user where RKE is run. We recommend that this kube_config_cluster.yml file be kept in secure store.
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**Result:** Pass (Not Applicable)
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**Result:** Not Applicable
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#### 1.4.14 - Ensure that ownership of `admin.conf` is set to `root:root` (Scored)
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@@ -973,7 +958,7 @@ RKE does not store the kubernetes default kubeconfig credentials file on the nod
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RKE does not store the default `kubectl` config credentials file on the nodes. It presents credentials to the user when `rke` is first run, and only on the device where the user ran the command. Rancher Labs recommends that this `kube_config_cluster.yml` file be kept in secure store.
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**Result:** Pass (Not Applicable)
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**Result:** Not Applicable
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#### 1.4.15 - Ensure that the file permissions for `scheduler.conf` are set to `644` or more restrictive (Scored)
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@@ -1509,15 +1494,7 @@ docker inspect kubelet | jq -e '.[0].Args[] | match("--make-iptables-util-chains
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**Notes**
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This is used by most cloud providers. Not setting this is not practical in most cases.
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**Audit**
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``` bash
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docker inspect kubelet | jq -e '.[0].Args[] | match("--hostname-override=.*").string'
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```
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**Returned Value:** `--hostname-override=<ipv4 address>`
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**Result:** Fail
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**Result:** Not Applicable
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#### 2.1.9 - Ensure that the `--event-qps` argument is set to `0` (Scored)
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@@ -1581,19 +1558,15 @@ docker inspect kubelet | jq -e '.[0].Args[] | match("--rotate-certificates=true"
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**Returned Value:** `null`
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**Result:** Pass (Not Applicable)
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**Result:** Not Applicable
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#### 2.1.13 - Ensure that the `RotateKubeletServerCertificate` argument is set to `true` (Scored)
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**Audit**
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**Notes**
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``` bash
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docker inspect kubelet | jq -e '.[0].Args[] | match("--feature-gates=.*(RotateKubeletServerCertificate=true).*").captures[].string'
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```
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RKE handles certificate rotation through an external process.
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**Returned Value:** `RotateKubeletServerCertificate=true`
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**Result:** Pass
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**Result:** Not Applicable
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#### 2.1.14 - Ensure that the kubelet only makes use of strong cryptographic ciphers (Not Scored)
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@@ -1719,7 +1692,7 @@ stat -c %U:%G /etc/kubernetes/ssl/kubecfg-kube-node.yaml
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RKE doesn't require or maintain a configuration file for kubelet. All configuration is passed in as arguments at container run time.
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**Result:** Pass (Not Applicable)
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**Result:** Not Applicable
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#### 2.2.4 - Ensure that the kubelet service file ownership is set to `root:root` (Scored)
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@@ -1728,7 +1701,7 @@ RKE doesn't require or maintain a configuration file for kubelet. All configurat
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RKE doesn't require or maintain a configuration file for kubelet. All configuration is passed in as arguments at container run time.
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**Result:** Pass (Not Applicable)
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**Result:** Not Applicable
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#### 2.2.5 - Ensure that the proxy kubeconfig file permissions are set to `644` or more restrictive (Scored)
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@@ -1784,7 +1757,7 @@ stat -c %U:%G /etc/kubernetes/ssl/kube-ca.pem
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RKE doesn't require or maintain a configuration file for kubelet. All configuration is passed in as arguments at container run time.
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**Result:** Pass (Not Applicable)
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**Result:** Not Applicable
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#### 2.2.10 - Ensure that the kubelet configuration file permissions are set to `644` or more restrictive (Scored)
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@@ -1792,4 +1765,4 @@ RKE doesn't require or maintain a configuration file for kubelet. All configurat
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RKE doesn't require or maintain a configuration file for kubelet. All configuration is passed in as arguments at container run time.
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**Result:** Pass (Not Applicable)
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**Result:** Not Applicable
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@@ -118,6 +118,10 @@ metadata:
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name: default-allow-all
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spec:
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podSelector: {}
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ingress:
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- {}
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egress:
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- {}
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policyTypes:
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- Ingress
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- Egress
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@@ -179,7 +183,6 @@ services:
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infra_container_image: ""
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cluster_dns_server: ""
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fail_swap_on: false
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generate_serving_certificate: true
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kubeproxy:
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image: ""
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extra_args: {}
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@@ -1266,6 +1266,7 @@ services:
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anonymous-auth: "false"
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feature-gates: "RotateKubeletServerCertificate=true"
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tls-cipher-suites: "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256"
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generate_serving_certificate: true
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kube-api:
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pod_security_policy: true
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extra_args:
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