mirror of
https://github.com/ceph/ceph-csi.git
synced 2025-03-09 08:59:30 +00:00
f87d06ed85
Several packages are only used while running the e2e suite. These packages are less important to update, as the they can not influence the final executable that is part of the Ceph-CSI container-image. By moving these dependencies out of the main Ceph-CSI go.mod, it is easier to identify if a reported CVE affects Ceph-CSI, or only the testing (like most of the Kubernetes CVEs). Signed-off-by: Niels de Vos <ndevos@ibm.com>
105 lines
2.7 KiB
Go
105 lines
2.7 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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"strings"
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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/pod-security-admission/api"
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)
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/*
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Containers must not set runAsUser: 0
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**Restricted Fields:**
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spec.securityContext.runAsUser
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spec.containers[*].securityContext.runAsUser
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spec.initContainers[*].securityContext.runAsUser
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**Allowed Values:**
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non-zero values
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undefined/null
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*/
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func init() {
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addCheck(CheckRunAsUser)
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}
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// CheckRunAsUser returns a restricted level check
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// that forbides runAsUser=0 in 1.23+
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func CheckRunAsUser() Check {
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return Check{
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ID: "runAsUser",
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Level: api.LevelRestricted,
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Versions: []VersionedCheck{
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{
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MinimumVersion: api.MajorMinorVersion(1, 23),
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CheckPod: runAsUser_1_23,
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},
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},
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}
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}
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func runAsUser_1_23(podMetadata *metav1.ObjectMeta, podSpec *corev1.PodSpec) CheckResult {
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// See KEP-127: https://github.com/kubernetes/enhancements/blob/308ba8d/keps/sig-node/127-user-namespaces/README.md?plain=1#L411-L447
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if relaxPolicyForUserNamespacePod(podSpec) {
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return CheckResult{Allowed: true}
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}
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// things that explicitly set runAsUser=0
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var badSetters []string
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if podSpec.SecurityContext != nil && podSpec.SecurityContext.RunAsUser != nil && *podSpec.SecurityContext.RunAsUser == 0 {
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badSetters = append(badSetters, "pod")
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}
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// containers that explicitly set runAsUser=0
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var explicitlyBadContainers []string
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visitContainers(podSpec, func(container *corev1.Container) {
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if container.SecurityContext != nil && container.SecurityContext.RunAsUser != nil && *container.SecurityContext.RunAsUser == 0 {
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explicitlyBadContainers = append(explicitlyBadContainers, container.Name)
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}
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})
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if len(explicitlyBadContainers) > 0 {
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badSetters = append(
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badSetters,
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fmt.Sprintf(
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"%s %s",
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pluralize("container", "containers", len(explicitlyBadContainers)),
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joinQuote(explicitlyBadContainers),
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),
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)
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}
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// pod or containers explicitly set runAsUser=0
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if len(badSetters) > 0 {
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return CheckResult{
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Allowed: false,
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ForbiddenReason: "runAsUser=0",
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ForbiddenDetail: fmt.Sprintf("%s must not set runAsUser=0", strings.Join(badSetters, " and ")),
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}
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}
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return CheckResult{Allowed: true}
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}
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