mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-09-19 15:09:56 +00:00
e3bf375035
update kubernetes to latest v1.25.0 release. Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
111 lines
2.9 KiB
Go
111 lines
2.9 KiB
Go
/*
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Copyright 2021 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package policy
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import (
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"fmt"
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corev1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/pod-security-admission/api"
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)
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/*
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Adding NET_RAW or capabilities beyond the default set must be disallowed.
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**Restricted Fields:**
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spec.containers[*].securityContext.capabilities.add
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spec.initContainers[*].securityContext.capabilities.add
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**Allowed Values:**
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undefined / empty
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values from the default set "AUDIT_WRITE", "CHOWN", "DAC_OVERRIDE","FOWNER", "FSETID", "KILL", "MKNOD", "NET_BIND_SERVICE", "SETFCAP", "SETGID", "SETPCAP", "SETUID", "SYS_CHROOT"
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*/
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func init() {
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addCheck(CheckCapabilitiesBaseline)
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}
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const checkCapabilitiesBaselineID CheckID = "capabilities_baseline"
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// CheckCapabilitiesBaseline returns a baseline level check
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// that limits the capabilities that can be added in 1.0+
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func CheckCapabilitiesBaseline() Check {
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return Check{
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ID: checkCapabilitiesBaselineID,
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Level: api.LevelBaseline,
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Versions: []VersionedCheck{
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{
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MinimumVersion: api.MajorMinorVersion(1, 0),
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CheckPod: capabilitiesBaseline_1_0,
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},
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},
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}
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}
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var (
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capabilities_allowed_1_0 = sets.NewString(
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"AUDIT_WRITE",
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"CHOWN",
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"DAC_OVERRIDE",
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"FOWNER",
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"FSETID",
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"KILL",
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"MKNOD",
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"NET_BIND_SERVICE",
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"SETFCAP",
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"SETGID",
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"SETPCAP",
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"SETUID",
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"SYS_CHROOT",
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)
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)
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func capabilitiesBaseline_1_0(podMetadata *metav1.ObjectMeta, podSpec *corev1.PodSpec) CheckResult {
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var badContainers []string
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nonDefaultCapabilities := sets.NewString()
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visitContainers(podSpec, func(container *corev1.Container) {
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if container.SecurityContext != nil && container.SecurityContext.Capabilities != nil {
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valid := true
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for _, c := range container.SecurityContext.Capabilities.Add {
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if !capabilities_allowed_1_0.Has(string(c)) {
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valid = false
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nonDefaultCapabilities.Insert(string(c))
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}
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}
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if !valid {
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badContainers = append(badContainers, container.Name)
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}
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}
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})
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if len(badContainers) > 0 {
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return CheckResult{
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Allowed: false,
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ForbiddenReason: "non-default capabilities",
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ForbiddenDetail: fmt.Sprintf(
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"%s %s must not include %s in securityContext.capabilities.add",
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pluralize("container", "containers", len(badContainers)),
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joinQuote(badContainers),
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joinQuote(nonDefaultCapabilities.List()),
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),
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}
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}
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return CheckResult{Allowed: true}
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}
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