mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-30 18:20:19 +00:00
e3bf375035
update kubernetes to latest v1.25.0 release. Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
94 lines
3.0 KiB
Go
94 lines
3.0 KiB
Go
/*
|
|
Copyright 2021 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package policy
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
corev1 "k8s.io/api/core/v1"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/pod-security-admission/api"
|
|
)
|
|
|
|
/*
|
|
Privilege escalation (such as via set-user-ID or set-group-ID file mode) should not be allowed.
|
|
|
|
**Restricted Fields:**
|
|
|
|
spec.containers[*].securityContext.allowPrivilegeEscalation
|
|
spec.initContainers[*].securityContext.allowPrivilegeEscalation
|
|
|
|
**Allowed Values:** false
|
|
*/
|
|
|
|
func init() {
|
|
addCheck(CheckAllowPrivilegeEscalation)
|
|
}
|
|
|
|
// CheckAllowPrivilegeEscalation returns a restricted level check
|
|
// that requires allowPrivilegeEscalation=false in 1.8+
|
|
func CheckAllowPrivilegeEscalation() Check {
|
|
return Check{
|
|
ID: "allowPrivilegeEscalation",
|
|
Level: api.LevelRestricted,
|
|
Versions: []VersionedCheck{
|
|
{
|
|
// Field added in 1.8:
|
|
// https://github.com/kubernetes/kubernetes/blob/v1.8.0/staging/src/k8s.io/api/core/v1/types.go#L4797-L4804
|
|
MinimumVersion: api.MajorMinorVersion(1, 8),
|
|
CheckPod: allowPrivilegeEscalation_1_8,
|
|
},
|
|
{
|
|
// Starting 1.25, windows pods would be exempted from this check using pod.spec.os field when set to windows.
|
|
MinimumVersion: api.MajorMinorVersion(1, 25),
|
|
CheckPod: allowPrivilegeEscalation_1_25,
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
func allowPrivilegeEscalation_1_8(podMetadata *metav1.ObjectMeta, podSpec *corev1.PodSpec) CheckResult {
|
|
var badContainers []string
|
|
visitContainers(podSpec, func(container *corev1.Container) {
|
|
if container.SecurityContext == nil || container.SecurityContext.AllowPrivilegeEscalation == nil || *container.SecurityContext.AllowPrivilegeEscalation {
|
|
badContainers = append(badContainers, container.Name)
|
|
}
|
|
})
|
|
|
|
if len(badContainers) > 0 {
|
|
return CheckResult{
|
|
Allowed: false,
|
|
ForbiddenReason: "allowPrivilegeEscalation != false",
|
|
ForbiddenDetail: fmt.Sprintf(
|
|
"%s %s must set securityContext.allowPrivilegeEscalation=false",
|
|
pluralize("container", "containers", len(badContainers)),
|
|
joinQuote(badContainers),
|
|
),
|
|
}
|
|
}
|
|
return CheckResult{Allowed: true}
|
|
}
|
|
|
|
func allowPrivilegeEscalation_1_25(podMetadata *metav1.ObjectMeta, podSpec *corev1.PodSpec) CheckResult {
|
|
// Pod API validation would have failed if podOS == Windows and if privilegeEscalation has been set.
|
|
// We can admit the Windows pod even if privilegeEscalation has not been set.
|
|
if podSpec.OS != nil && podSpec.OS.Name == corev1.Windows {
|
|
return CheckResult{Allowed: true}
|
|
}
|
|
return allowPrivilegeEscalation_1_8(podMetadata, podSpec)
|
|
}
|