1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
documentation_complete: true
title: 'Ensure that use-service-account-credentials is enabled'
{{% set default_jqfilter = '[.data."config.yaml" | fromjson | if .extendedArguments["use-service-account-credentials"][]=="true" then true else false end]' %}}
{{% set default_api_path = '/api/v1/namespaces/openshift-kube-controller-manager/configmaps/config' %}}
{{% set hypershift_path = '/api/v1/namespaces/{{.hypershift_namespace_prefix}}-{{.hypershift_cluster}}/pods?labelSelector=app%3Dkube-controller-manager' %}}
{{% set hypershift_jqfilter = '[[.items[0].spec.containers[0].args[] | select(. | match("--use-service-account-credentials=true") )] | length | if . ==1 then true else false end]' %}}
{{% set custom_api_path = '{{if ne .hypershift_cluster "None"}}' ~ hypershift_path ~ '{{else}}' ~ default_api_path ~ '{{end}}' %}}
{{% set custom_jqfilter = '{{if ne .hypershift_cluster "None"}}' ~ hypershift_jqfilter ~ '{{else}}' ~ default_jqfilter ~ '{{end}}' %}}
{{% set dump_path = default_api_path ~ ',' ~ default_jqfilter ~ ',' ~ custom_jqfilter %}}
description: |-
To ensure individual service account credentials are used,
set the <tt>use-service-account-credentials</tt> option to <tt>true</tt>
in the <tt>openshift-kube-controller-manager</tt> configmap on the master
node(s):
<pre>
"extendedArguments": {
...
"use-service-account-credentials": [
"true"
],
...
</pre>
rationale: |-
The controller manager creates a service account per controller in
<tt>kube-system</tt> namespace, generates an API token and credentials for it,
then builds a dedicated API client with that service account credential
for each controller loop to use. Setting the
<tt>use-service-account-credentials</tt> to <tt>true</tt> runs each
control loop within the controller manager using a separate service
account credential. When used in combination with RBAC, this ensures
that the control loops run with the minimum permissions required to
perform their intended tasks.
severity: medium
identifiers:
cce@ocp4: CCE-84208-8
references:
cis@ocp4: 1.3.2
nerc-cip: CIP-003-8 R6,CIP-004-6 R3,CIP-007-3 R6.1
nist: CM-6,CM-6(1)
pcidss: Req-2.2
srg: SRG-APP-000516-CTR-001325
platform: not ocp4-on-hypershift-hosted
ocil_clause: '<tt>use-service-account-credentials</tt> is set to <tt>false</tt>'
ocil: |-
To verify that <tt>service-account-credentials</tt> is configured correctly,
run the following command:
<pre>$ oc get configmaps config -n openshift-kube-controller-manager -ojson | jq -r '.data["config.yaml"]' | jq -r '.extendedArguments["use-service-account-credentials"]'</pre>
The value of <tt>use-service-account-credentials</tt> should be <tt>true</tt>.
warnings:
- general: |-
{{{ openshift_filtered_cluster_setting({custom_api_path: dump_path}) | indent(4) }}}
template:
name: yamlfile_value
vars:
ocp_data: "true"
entity_check: "at least one"
filepath: {{{ openshift_filtered_path(default_api_path, default_jqfilter) }}}
yamlpath: '[:]'
values:
- value: 'true'
type: "string"
entity_check: "at least one"
|
