mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-23 06:40:23 +00:00
e3bf375035
update kubernetes to latest v1.25.0 release. Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
92 lines
2.5 KiB
Go
92 lines
2.5 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/apimachinery/pkg/util/sets"
|
|
"k8s.io/pod-security-admission/api"
|
|
)
|
|
|
|
/*
|
|
|
|
The default /proc masks are set up to reduce attack surface, and should be required.
|
|
|
|
**Restricted Fields:**
|
|
spec.containers[*].securityContext.procMount
|
|
spec.initContainers[*].securityContext.procMount
|
|
|
|
**Allowed Values:** undefined/null, "Default"
|
|
|
|
*/
|
|
|
|
func init() {
|
|
addCheck(CheckProcMount)
|
|
}
|
|
|
|
// CheckProcMount returns a baseline level check that restricts
|
|
// setting the value of securityContext.procMount to DefaultProcMount
|
|
// in 1.0+
|
|
func CheckProcMount() Check {
|
|
return Check{
|
|
ID: "procMount",
|
|
Level: api.LevelBaseline,
|
|
Versions: []VersionedCheck{
|
|
{
|
|
MinimumVersion: api.MajorMinorVersion(1, 0),
|
|
CheckPod: procMount_1_0,
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
func procMount_1_0(podMetadata *metav1.ObjectMeta, podSpec *corev1.PodSpec) CheckResult {
|
|
var badContainers []string
|
|
forbiddenProcMountTypes := sets.NewString()
|
|
visitContainers(podSpec, func(container *corev1.Container) {
|
|
// allow if the security context is nil.
|
|
if container.SecurityContext == nil {
|
|
return
|
|
}
|
|
// allow if proc mount is not set.
|
|
if container.SecurityContext.ProcMount == nil {
|
|
return
|
|
}
|
|
// check if the value of the proc mount type is valid.
|
|
if *container.SecurityContext.ProcMount != corev1.DefaultProcMount {
|
|
badContainers = append(badContainers, container.Name)
|
|
forbiddenProcMountTypes.Insert(string(*container.SecurityContext.ProcMount))
|
|
}
|
|
})
|
|
if len(badContainers) > 0 {
|
|
return CheckResult{
|
|
Allowed: false,
|
|
ForbiddenReason: "procMount",
|
|
ForbiddenDetail: fmt.Sprintf(
|
|
"%s %s must not set securityContext.procMount to %s",
|
|
pluralize("container", "containers", len(badContainers)),
|
|
joinQuote(badContainers),
|
|
joinQuote(forbiddenProcMountTypes.List()),
|
|
),
|
|
}
|
|
}
|
|
return CheckResult{Allowed: true}
|
|
}
|