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provider_test.go
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provider_test.go
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/*
Copyright 2016 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 podsecuritypolicy
import (
"fmt"
"reflect"
"strconv"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
v1 "k8s.io/api/core/v1"
policy "k8s.io/api/policy/v1beta1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/diff"
utilfeature "k8s.io/apiserver/pkg/util/feature"
featuregatetesting "k8s.io/component-base/featuregate/testing"
api "k8s.io/kubernetes/pkg/apis/core"
k8s_api_v1 "k8s.io/kubernetes/pkg/apis/core/v1"
"k8s.io/kubernetes/pkg/features"
"k8s.io/kubernetes/pkg/security/apparmor"
"k8s.io/kubernetes/pkg/security/podsecuritypolicy/seccomp"
psputil "k8s.io/kubernetes/pkg/security/podsecuritypolicy/util"
"k8s.io/kubernetes/plugin/pkg/admission/serviceaccount"
"k8s.io/utils/pointer"
)
const defaultContainerName = "test-c"
func TestMutatePodNonmutating(t *testing.T) {
// Create a pod with a security context that needs filling in
createPod := func() *api.Pod {
return &api.Pod{
Spec: api.PodSpec{
SecurityContext: &api.PodSecurityContext{},
},
}
}
// Create a PSP with strategies that will populate a blank psc
allowPrivilegeEscalation := true
createPSP := func() *policy.PodSecurityPolicy {
return &policy.PodSecurityPolicy{
ObjectMeta: metav1.ObjectMeta{
Name: "psp-sa",
Annotations: map[string]string{
seccomp.AllowedProfilesAnnotationKey: "*",
},
},
Spec: policy.PodSecurityPolicySpec{
AllowPrivilegeEscalation: &allowPrivilegeEscalation,
RunAsUser: policy.RunAsUserStrategyOptions{
Rule: policy.RunAsUserStrategyRunAsAny,
},
RunAsGroup: &policy.RunAsGroupStrategyOptions{
Rule: policy.RunAsGroupStrategyRunAsAny,
},
SELinux: policy.SELinuxStrategyOptions{
Rule: policy.SELinuxStrategyRunAsAny,
},
FSGroup: policy.FSGroupStrategyOptions{
Rule: policy.FSGroupStrategyRunAsAny,
},
SupplementalGroups: policy.SupplementalGroupsStrategyOptions{
Rule: policy.SupplementalGroupsStrategyRunAsAny,
},
},
}
}
pod := createPod()
psp := createPSP()
provider, err := NewSimpleProvider(psp, "namespace", NewSimpleStrategyFactory())
require.NoError(t, err, "unable to create provider")
err = provider.MutatePod(pod)
require.NoError(t, err, "unable to modify pod")
// Creating the provider or the security context should not have mutated the psp or pod
// since all the strategies were permissive
if !reflect.DeepEqual(createPod(), pod) {
diffs := diff.ObjectDiff(createPod(), pod)
t.Errorf("pod was mutated by MutatePod. diff:\n%s", diffs)
}
if !reflect.DeepEqual(createPSP(), psp) {
t.Error("psp was mutated by MutatePod")
}
}
func TestMutateContainerNonmutating(t *testing.T) {
defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.EphemeralContainers, true)()
untrue := false
tests := []struct {
security *api.SecurityContext
}{
{nil},
{&api.SecurityContext{RunAsNonRoot: &untrue}},
}
for _, tc := range tests {
// Create a pod with a security context that needs filling in
createPod := func() *api.Pod {
return &api.Pod{
Spec: api.PodSpec{
Containers: []api.Container{{
SecurityContext: tc.security,
}},
EphemeralContainers: []api.EphemeralContainer{{
EphemeralContainerCommon: api.EphemeralContainerCommon{
SecurityContext: tc.security,
},
}},
},
}
}
// Create a PSP with strategies that will populate a blank security context
allowPrivilegeEscalation := true
createPSP := func() *policy.PodSecurityPolicy {
return &policy.PodSecurityPolicy{
ObjectMeta: metav1.ObjectMeta{
Name: "psp-sa",
Annotations: map[string]string{
seccomp.AllowedProfilesAnnotationKey: "*",
},
},
Spec: policy.PodSecurityPolicySpec{
AllowPrivilegeEscalation: &allowPrivilegeEscalation,
RunAsUser: policy.RunAsUserStrategyOptions{
Rule: policy.RunAsUserStrategyRunAsAny,
},
RunAsGroup: &policy.RunAsGroupStrategyOptions{
Rule: policy.RunAsGroupStrategyRunAsAny,
},
SELinux: policy.SELinuxStrategyOptions{
Rule: policy.SELinuxStrategyRunAsAny,
},
FSGroup: policy.FSGroupStrategyOptions{
Rule: policy.FSGroupStrategyRunAsAny,
},
SupplementalGroups: policy.SupplementalGroupsStrategyOptions{
Rule: policy.SupplementalGroupsStrategyRunAsAny,
},
},
}
}
pod := createPod()
psp := createPSP()
provider, err := NewSimpleProvider(psp, "namespace", NewSimpleStrategyFactory())
require.NoError(t, err, "unable to create provider")
err = provider.MutatePod(pod)
require.NoError(t, err, "unable to modify pod")
// Creating the provider or the security context should not have mutated the psp or pod
// since all the strategies were permissive
if !reflect.DeepEqual(createPod(), pod) {
diffs := diff.ObjectDiff(createPod(), pod)
t.Errorf("pod was mutated. diff:\n%s", diffs)
}
if !reflect.DeepEqual(createPSP(), psp) {
t.Error("psp was mutated")
}
}
}
func TestValidatePodFailures(t *testing.T) {
defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.CSIInlineVolume, true)()
failHostNetworkPod := defaultPod()
failHostNetworkPod.Spec.SecurityContext.HostNetwork = true
failHostPIDPod := defaultPod()
failHostPIDPod.Spec.SecurityContext.HostPID = true
failHostIPCPod := defaultPod()
failHostIPCPod.Spec.SecurityContext.HostIPC = true
failSupplementalGroupPod := defaultPod()
failSupplementalGroupPod.Spec.SecurityContext.SupplementalGroups = []int64{999}
failSupplementalGroupMustPSP := defaultPSP()
failSupplementalGroupMustPSP.Spec.SupplementalGroups = policy.SupplementalGroupsStrategyOptions{
Rule: policy.SupplementalGroupsStrategyMustRunAs,
Ranges: []policy.IDRange{
{Min: 1, Max: 1},
},
}
failSupplementalGroupMayPSP := defaultPSP()
failSupplementalGroupMayPSP.Spec.SupplementalGroups = policy.SupplementalGroupsStrategyOptions{
Rule: policy.SupplementalGroupsStrategyMayRunAs,
Ranges: []policy.IDRange{
{Min: 50, Max: 50},
{Min: 55, Max: 998},
{Min: 1000, Max: 1000},
},
}
failFSGroupPod := defaultPod()
fsGroup := int64(999)
failFSGroupPod.Spec.SecurityContext.FSGroup = &fsGroup
failFSGroupMustPSP := defaultPSP()
failFSGroupMustPSP.Spec.FSGroup = policy.FSGroupStrategyOptions{
Rule: policy.FSGroupStrategyMustRunAs,
Ranges: []policy.IDRange{
{Min: 1, Max: 1},
},
}
failFSGroupMayPSP := defaultPSP()
failFSGroupMayPSP.Spec.FSGroup = policy.FSGroupStrategyOptions{
Rule: policy.FSGroupStrategyMayRunAs,
Ranges: []policy.IDRange{
{Min: 10, Max: 20},
{Min: 1000, Max: 1001},
},
}
failNilSELinuxPod := defaultPod()
failSELinuxPSP := defaultPSP()
failSELinuxPSP.Spec.SELinux.Rule = policy.SELinuxStrategyMustRunAs
failSELinuxPSP.Spec.SELinux.SELinuxOptions = &v1.SELinuxOptions{
Level: "foo",
}
failInvalidSELinuxPod := defaultPod()
failInvalidSELinuxPod.Spec.SecurityContext.SELinuxOptions = &api.SELinuxOptions{
Level: "bar",
}
failHostDirPod := defaultPod()
failHostDirPod.Spec.Volumes = []api.Volume{
{
Name: "bad volume",
VolumeSource: api.VolumeSource{
HostPath: &api.HostPathVolumeSource{},
},
},
}
failHostPathDirPod := defaultPod()
failHostPathDirPod.Spec.Volumes = []api.Volume{
{
Name: "bad volume",
VolumeSource: api.VolumeSource{
HostPath: &api.HostPathVolumeSource{
Path: "/fail",
},
},
},
}
failHostPathDirPSP := defaultPSP()
failHostPathDirPSP.Spec.Volumes = []policy.FSType{policy.HostPath}
failHostPathDirPSP.Spec.AllowedHostPaths = []policy.AllowedHostPath{
{PathPrefix: "/foo/bar"},
}
failHostPathReadOnlyPod := defaultPod()
failHostPathReadOnlyPod.Spec.Containers[0].VolumeMounts = []api.VolumeMount{
{
Name: "bad volume",
ReadOnly: false,
},
}
failHostPathReadOnlyPod.Spec.Volumes = []api.Volume{
{
Name: "bad volume",
VolumeSource: api.VolumeSource{
HostPath: &api.HostPathVolumeSource{
Path: "/foo",
},
},
},
}
failHostPathReadOnlyPSP := defaultPSP()
failHostPathReadOnlyPSP.Spec.Volumes = []policy.FSType{policy.HostPath}
failHostPathReadOnlyPSP.Spec.AllowedHostPaths = []policy.AllowedHostPath{
{
PathPrefix: "/foo",
ReadOnly: true,
},
}
failSysctlDisallowedPSP := defaultPSP()
failSysctlDisallowedPSP.Spec.ForbiddenSysctls = []string{"kernel.shm_rmid_forced"}
failNoSafeSysctlAllowedPSP := defaultPSP()
failNoSafeSysctlAllowedPSP.Spec.ForbiddenSysctls = []string{"*"}
failAllUnsafeSysctlsPSP := defaultPSP()
failAllUnsafeSysctlsPSP.Spec.AllowedUnsafeSysctls = []string{}
failSafeSysctlKernelPod := defaultPod()
failSafeSysctlKernelPod.Spec.SecurityContext = &api.PodSecurityContext{
Sysctls: []api.Sysctl{
{
Name: "kernel.shm_rmid_forced",
Value: "1",
},
},
}
failUnsafeSysctlPod := defaultPod()
failUnsafeSysctlPod.Spec.SecurityContext = &api.PodSecurityContext{
Sysctls: []api.Sysctl{
{
Name: "kernel.sem",
Value: "32000",
},
},
}
failSeccompProfilePod := defaultPod()
failSeccompProfilePod.Annotations = map[string]string{api.SeccompPodAnnotationKey: "foo"}
podWithInvalidFlexVolumeDriver := defaultPod()
podWithInvalidFlexVolumeDriver.Spec.Volumes = []api.Volume{
{
Name: "flex-volume",
VolumeSource: api.VolumeSource{
FlexVolume: &api.FlexVolumeSource{
Driver: "example/unknown",
},
},
},
}
failCSIDriverPod := defaultPod()
failCSIDriverPod.Spec.Volumes = []api.Volume{
{
Name: "csi volume pod",
VolumeSource: api.VolumeSource{
CSI: &api.CSIVolumeSource{
Driver: "csi.driver.foo",
},
},
},
}
failGenericEphemeralPod := defaultPod()
failGenericEphemeralPod.Spec.Volumes = []api.Volume{
{
Name: "generic ephemeral volume",
VolumeSource: api.VolumeSource{
Ephemeral: &api.EphemeralVolumeSource{
VolumeClaimTemplate: &api.PersistentVolumeClaimTemplate{},
},
},
},
}
errorCases := map[string]struct {
pod *api.Pod
psp *policy.PodSecurityPolicy
expectedError string
}{
"failHostNetwork": {
pod: failHostNetworkPod,
psp: defaultPSP(),
expectedError: "Host network is not allowed to be used",
},
"failHostPID": {
pod: failHostPIDPod,
psp: defaultPSP(),
expectedError: "Host PID is not allowed to be used",
},
"failHostIPC": {
pod: failHostIPCPod,
psp: defaultPSP(),
expectedError: "Host IPC is not allowed to be used",
},
"failSupplementalGroupOutOfMustRange": {
pod: failSupplementalGroupPod,
psp: failSupplementalGroupMustPSP,
expectedError: "group 999 must be in the ranges: [{1 1}]",
},
"failSupplementalGroupOutOfMayRange": {
pod: failSupplementalGroupPod,
psp: failSupplementalGroupMayPSP,
expectedError: "group 999 must be in the ranges: [{50 50} {55 998} {1000 1000}]",
},
"failSupplementalGroupMustEmpty": {
pod: defaultPod(),
psp: failSupplementalGroupMustPSP,
expectedError: "unable to validate empty groups against required ranges",
},
"failFSGroupOutOfMustRange": {
pod: failFSGroupPod,
psp: failFSGroupMustPSP,
expectedError: "group 999 must be in the ranges: [{1 1}]",
},
"failFSGroupOutOfMayRange": {
pod: failFSGroupPod,
psp: failFSGroupMayPSP,
expectedError: "group 999 must be in the ranges: [{10 20} {1000 1001}]",
},
"failFSGroupMustEmpty": {
pod: defaultPod(),
psp: failFSGroupMustPSP,
expectedError: "unable to validate empty groups against required ranges",
},
"failNilSELinux": {
pod: failNilSELinuxPod,
psp: failSELinuxPSP,
expectedError: "seLinuxOptions: Required",
},
"failInvalidSELinux": {
pod: failInvalidSELinuxPod,
psp: failSELinuxPSP,
expectedError: "seLinuxOptions.level: Invalid value",
},
"failHostDirPSP": {
pod: failHostDirPod,
psp: defaultPSP(),
expectedError: "hostPath volumes are not allowed to be used",
},
"failHostPathDirPSP": {
pod: failHostPathDirPod,
psp: failHostPathDirPSP,
expectedError: "is not allowed to be used",
},
"failHostPathReadOnlyPSP": {
pod: failHostPathReadOnlyPod,
psp: failHostPathReadOnlyPSP,
expectedError: "must be read-only",
},
"failSafeSysctlKernelPod with failNoSafeSysctlAllowedPSP": {
pod: failSafeSysctlKernelPod,
psp: failNoSafeSysctlAllowedPSP,
expectedError: "sysctl \"kernel.shm_rmid_forced\" is not allowed",
},
"failSafeSysctlKernelPod with failSysctlDisallowedPSP": {
pod: failSafeSysctlKernelPod,
psp: failSysctlDisallowedPSP,
expectedError: "sysctl \"kernel.shm_rmid_forced\" is not allowed",
},
"failUnsafeSysctlPod with failAllUnsafeSysctlsPSP": {
pod: failUnsafeSysctlPod,
psp: failAllUnsafeSysctlsPSP,
expectedError: "unsafe sysctl \"kernel.sem\" is not allowed",
},
"failInvalidSeccomp": {
pod: failSeccompProfilePod,
psp: defaultPSP(),
expectedError: "Forbidden: seccomp may not be set",
},
"fail pod with disallowed flexVolume when flex volumes are allowed": {
pod: podWithInvalidFlexVolumeDriver,
psp: allowFlexVolumesPSP(false, false),
expectedError: "Flexvolume driver is not allowed to be used",
},
"fail pod with disallowed flexVolume when all volumes are allowed": {
pod: podWithInvalidFlexVolumeDriver,
psp: allowFlexVolumesPSP(false, true),
expectedError: "Flexvolume driver is not allowed to be used",
},
"CSI policy using disallowed CDI driver": {
pod: failCSIDriverPod,
psp: func() *policy.PodSecurityPolicy {
psp := defaultPSP()
psp.Spec.Volumes = []policy.FSType{policy.CSI}
psp.Spec.AllowedCSIDrivers = []policy.AllowedCSIDriver{{Name: "csi.driver.disallowed"}}
return psp
}(),
expectedError: "Inline CSI driver is not allowed to be used",
},
"Using inline CSI driver with no policy specified": {
pod: failCSIDriverPod,
psp: func() *policy.PodSecurityPolicy {
psp := defaultPSP()
psp.Spec.AllowedCSIDrivers = []policy.AllowedCSIDriver{{Name: "csi.driver.foo"}}
return psp
}(),
expectedError: "csi volumes are not allowed to be used",
},
"policy.All using disallowed CDI driver": {
pod: failCSIDriverPod,
psp: func() *policy.PodSecurityPolicy {
psp := defaultPSP()
psp.Spec.Volumes = []policy.FSType{policy.All}
psp.Spec.AllowedCSIDrivers = []policy.AllowedCSIDriver{{Name: "csi.driver.disallowed"}}
return psp
}(),
expectedError: "Inline CSI driver is not allowed to be used",
},
"CSI inline volumes without proper policy set": {
pod: failCSIDriverPod,
psp: defaultPSP(),
expectedError: "csi volumes are not allowed to be used",
},
"generic ephemeral volumes without proper policy set": {
pod: failGenericEphemeralPod,
psp: defaultPSP(),
expectedError: "ephemeral volumes are not allowed to be used",
},
"generic ephemeral volumes with other volume type allowed": {
pod: failGenericEphemeralPod,
psp: func() *policy.PodSecurityPolicy {
psp := defaultPSP()
psp.Spec.Volumes = []policy.FSType{policy.NFS}
return psp
}(),
expectedError: "ephemeral volumes are not allowed to be used",
},
}
for name, test := range errorCases {
t.Run(name, func(t *testing.T) {
provider, err := NewSimpleProvider(test.psp, "namespace", NewSimpleStrategyFactory())
require.NoError(t, err, "unable to create provider")
errs := provider.ValidatePod(test.pod)
require.NotEmpty(t, errs, "expected validation failure but did not receive errors")
assert.Contains(t, errs[0].Error(), test.expectedError, "received unexpected error")
})
}
}
func allowFlexVolumesPSP(allowAllFlexVolumes, allowAllVolumes bool) *policy.PodSecurityPolicy {
psp := defaultPSP()
allowedVolumes := []policy.AllowedFlexVolume{
{Driver: "example/foo"},
{Driver: "example/bar"},
}
if allowAllFlexVolumes {
allowedVolumes = []policy.AllowedFlexVolume{}
}
allowedVolumeType := policy.FlexVolume
if allowAllVolumes {
allowedVolumeType = policy.All
}
psp.Spec.AllowedFlexVolumes = allowedVolumes
psp.Spec.Volumes = []policy.FSType{allowedVolumeType}
return psp
}
func TestValidateContainerFailures(t *testing.T) {
defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.EphemeralContainers, true)()
// fail user strategy
failUserPSP := defaultPSP()
uid := int64(999)
badUID := int64(1)
failUserPSP.Spec.RunAsUser = policy.RunAsUserStrategyOptions{
Rule: policy.RunAsUserStrategyMustRunAs,
Ranges: []policy.IDRange{{Min: uid, Max: uid}},
}
failUserPod := defaultPod()
failUserPod.Spec.Containers[0].SecurityContext.RunAsUser = &badUID
// fail selinux strategy
failSELinuxPSP := defaultPSP()
failSELinuxPSP.Spec.SELinux = policy.SELinuxStrategyOptions{
Rule: policy.SELinuxStrategyMustRunAs,
SELinuxOptions: &v1.SELinuxOptions{
Level: "foo",
},
}
failSELinuxPod := defaultPod()
failSELinuxPod.Spec.SecurityContext.SELinuxOptions = &api.SELinuxOptions{Level: "foo"}
failSELinuxPod.Spec.Containers[0].SecurityContext.SELinuxOptions = &api.SELinuxOptions{
Level: "bar",
}
failNilAppArmorPod := defaultPod()
v1FailInvalidAppArmorPod := defaultV1Pod()
apparmor.SetProfileName(v1FailInvalidAppArmorPod, defaultContainerName, v1.AppArmorBetaProfileNamePrefix+"foo")
failInvalidAppArmorPod := &api.Pod{}
k8s_api_v1.Convert_v1_Pod_To_core_Pod(v1FailInvalidAppArmorPod, failInvalidAppArmorPod, nil)
failAppArmorPSP := defaultPSP()
failAppArmorPSP.Annotations = map[string]string{
v1.AppArmorBetaAllowedProfilesAnnotationKey: v1.AppArmorBetaProfileRuntimeDefault,
}
failPrivPod := defaultPod()
var priv = true
failPrivPod.Spec.Containers[0].SecurityContext.Privileged = &priv
failProcMountPod := defaultPod()
failProcMountPod.Spec.Containers[0].SecurityContext.ProcMount = new(api.ProcMountType)
*failProcMountPod.Spec.Containers[0].SecurityContext.ProcMount = api.UnmaskedProcMount
failCapsPod := defaultPod()
failCapsPod.Spec.Containers[0].SecurityContext.Capabilities = &api.Capabilities{
Add: []api.Capability{"foo"},
}
failHostPortPod := defaultPod()
failHostPortPod.Spec.Containers[0].Ports = []api.ContainerPort{{HostPort: 1}}
readOnlyRootFSPSP := defaultPSP()
readOnlyRootFSPSP.Spec.ReadOnlyRootFilesystem = true
readOnlyRootFSPodFalse := defaultPod()
readOnlyRootFS := false
readOnlyRootFSPodFalse.Spec.Containers[0].SecurityContext.ReadOnlyRootFilesystem = &readOnlyRootFS
failSeccompPod := defaultPod()
failSeccompPod.Annotations = map[string]string{
api.SeccompContainerAnnotationKeyPrefix + failSeccompPod.Spec.Containers[0].Name: "foo",
}
failSeccompPodInheritPodAnnotation := defaultPod()
failSeccompPodInheritPodAnnotation.Annotations = map[string]string{
api.SeccompPodAnnotationKey: "foo",
}
errorCases := map[string]struct {
pod *api.Pod
psp *policy.PodSecurityPolicy
expectedError string
}{
"failUserPSP": {
pod: failUserPod,
psp: failUserPSP,
expectedError: "runAsUser: Invalid value",
},
"failSELinuxPSP": {
pod: failSELinuxPod,
psp: failSELinuxPSP,
expectedError: "seLinuxOptions.level: Invalid value",
},
"failNilAppArmor": {
pod: failNilAppArmorPod,
psp: failAppArmorPSP,
expectedError: "AppArmor profile must be set",
},
"failInvalidAppArmor": {
pod: failInvalidAppArmorPod,
psp: failAppArmorPSP,
expectedError: "localhost/foo is not an allowed profile. Allowed values: \"runtime/default\"",
},
"failPrivPSP": {
pod: failPrivPod,
psp: defaultPSP(),
expectedError: "Privileged containers are not allowed",
},
"failProcMountPSP": {
pod: failProcMountPod,
psp: defaultPSP(),
expectedError: "ProcMountType is not allowed",
},
"failCapsPSP": {
pod: failCapsPod,
psp: defaultPSP(),
expectedError: "capability may not be added",
},
"failHostPortPSP": {
pod: failHostPortPod,
psp: defaultPSP(),
expectedError: "Host port 1 is not allowed to be used. Allowed ports: []",
},
"failReadOnlyRootFS - nil": {
pod: defaultPod(),
psp: readOnlyRootFSPSP,
expectedError: "ReadOnlyRootFilesystem may not be nil and must be set to true",
},
"failReadOnlyRootFS - false": {
pod: readOnlyRootFSPodFalse,
psp: readOnlyRootFSPSP,
expectedError: "ReadOnlyRootFilesystem must be set to true",
},
"failSeccompContainerAnnotation": {
pod: failSeccompPod,
psp: defaultPSP(),
expectedError: "Forbidden: seccomp may not be set",
},
"failSeccompContainerPodAnnotation": {
pod: failSeccompPodInheritPodAnnotation,
psp: defaultPSP(),
expectedError: "Forbidden: seccomp may not be set",
},
}
for name, test := range errorCases {
t.Run(name, func(t *testing.T) {
provider, err := NewSimpleProvider(test.psp, "namespace", NewSimpleStrategyFactory())
require.NoError(t, err, "unable to create provider")
errs := provider.ValidatePod(test.pod)
require.NotEmpty(t, errs, "expected validation failure but did not receive errors")
assert.Contains(t, errs[0].Error(), test.expectedError, "unexpected error")
// We want EphemeralContainers to behave the same as regular containers, so move the
// containers to ephemeralContainers and validate again.
ecPod := moveContainersToEphemeral(test.pod)
errs = provider.ValidatePod(ecPod)
require.NotEmpty(t, errs, "expected validation failure for ephemeral containers but did not receive errors")
assert.Contains(t, errs[0].Error(), test.expectedError, "unexpected error")
})
}
}
func TestValidatePodSuccess(t *testing.T) {
defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.CSIInlineVolume, true)()
hostNetworkPSP := defaultPSP()
hostNetworkPSP.Spec.HostNetwork = true
hostNetworkPod := defaultPod()
hostNetworkPod.Spec.SecurityContext.HostNetwork = true
hostPIDPSP := defaultPSP()
hostPIDPSP.Spec.HostPID = true
hostPIDPod := defaultPod()
hostPIDPod.Spec.SecurityContext.HostPID = true
hostIPCPSP := defaultPSP()
hostIPCPSP.Spec.HostIPC = true
hostIPCPod := defaultPod()
hostIPCPod.Spec.SecurityContext.HostIPC = true
supGroupMustPSP := defaultPSP()
supGroupMustPSP.Spec.SupplementalGroups = policy.SupplementalGroupsStrategyOptions{
Rule: policy.SupplementalGroupsStrategyMustRunAs,
Ranges: []policy.IDRange{
{Min: 1, Max: 5},
},
}
supGroupMayPSP := defaultPSP()
supGroupMayPSP.Spec.SupplementalGroups = policy.SupplementalGroupsStrategyOptions{
Rule: policy.SupplementalGroupsStrategyMayRunAs,
Ranges: []policy.IDRange{
{Min: 1, Max: 5},
},
}
supGroupPod := defaultPod()
supGroupPod.Spec.SecurityContext.SupplementalGroups = []int64{3}
fsGroupMustPSP := defaultPSP()
fsGroupMustPSP.Spec.FSGroup = policy.FSGroupStrategyOptions{
Rule: policy.FSGroupStrategyMustRunAs,
Ranges: []policy.IDRange{
{Min: 1, Max: 5},
},
}
fsGroupMayPSP := defaultPSP()
fsGroupMayPSP.Spec.FSGroup = policy.FSGroupStrategyOptions{
Rule: policy.FSGroupStrategyMayRunAs,
Ranges: []policy.IDRange{
{Min: 1, Max: 5},
},
}
fsGroupPod := defaultPod()
fsGroup := int64(3)
fsGroupPod.Spec.SecurityContext.FSGroup = &fsGroup
seLinuxPod := defaultPod()
seLinuxPod.Spec.SecurityContext.SELinuxOptions = &api.SELinuxOptions{
User: "user",
Role: "role",
Type: "type",
Level: "level",
}
seLinuxPSP := defaultPSP()
seLinuxPSP.Spec.SELinux.Rule = policy.SELinuxStrategyMustRunAs
seLinuxPSP.Spec.SELinux.SELinuxOptions = &v1.SELinuxOptions{
User: "user",
Role: "role",
Type: "type",
Level: "level",
}
hostPathDirPodVolumeMounts := []api.VolumeMount{
{
Name: "writeable /foo/bar",
ReadOnly: false,
},
{
Name: "read only /foo/bar/baz",
ReadOnly: true,
},
{
Name: "parent read only volume",
ReadOnly: true,
},
{
Name: "read only child volume",
ReadOnly: true,
},
}
hostPathDirPod := defaultPod()
hostPathDirPod.Spec.InitContainers = []api.Container{
{
Name: defaultContainerName,
VolumeMounts: hostPathDirPodVolumeMounts,
},
}
hostPathDirPod.Spec.Containers[0].VolumeMounts = hostPathDirPodVolumeMounts
hostPathDirPod.Spec.Volumes = []api.Volume{
{
Name: "writeable /foo/bar",
VolumeSource: api.VolumeSource{
HostPath: &api.HostPathVolumeSource{
Path: "/foo/bar",
},
},
},
{
Name: "read only /foo/bar/baz",
VolumeSource: api.VolumeSource{
HostPath: &api.HostPathVolumeSource{
Path: "/foo/bar/baz",
},
},
},
{
Name: "parent read only volume",
VolumeSource: api.VolumeSource{
HostPath: &api.HostPathVolumeSource{
Path: "/foo/",
},
},
},
{
Name: "read only child volume",
VolumeSource: api.VolumeSource{
HostPath: &api.HostPathVolumeSource{
Path: "/foo/readonly/child",
},
},
},
}
hostPathDirPSP := defaultPSP()
hostPathDirPSP.Spec.Volumes = []policy.FSType{policy.HostPath}
hostPathDirPSP.Spec.AllowedHostPaths = []policy.AllowedHostPath{
// overlapping test case where child is different than parent directory.
{PathPrefix: "/foo/bar/baz", ReadOnly: true},
{PathPrefix: "/foo", ReadOnly: true},
{PathPrefix: "/foo/bar", ReadOnly: false},
}
hostPathDirAsterisksPSP := defaultPSP()
hostPathDirAsterisksPSP.Spec.Volumes = []policy.FSType{policy.All}
hostPathDirAsterisksPSP.Spec.AllowedHostPaths = []policy.AllowedHostPath{
{PathPrefix: "/foo"},
}
sysctlAllowAllPSP := defaultPSP()
sysctlAllowAllPSP.Spec.ForbiddenSysctls = []string{}
sysctlAllowAllPSP.Spec.AllowedUnsafeSysctls = []string{"*"}
safeSysctlKernelPod := defaultPod()
safeSysctlKernelPod.Spec.SecurityContext = &api.PodSecurityContext{
Sysctls: []api.Sysctl{
{
Name: "kernel.shm_rmid_forced",
Value: "1",
},
},
}
unsafeSysctlKernelPod := defaultPod()
unsafeSysctlKernelPod.Spec.SecurityContext = &api.PodSecurityContext{
Sysctls: []api.Sysctl{
{
Name: "kernel.sem",
Value: "32000",
},
},
}
seccompPSP := defaultPSP()
seccompPSP.Annotations = map[string]string{
seccomp.AllowedProfilesAnnotationKey: "foo",
}
seccompPod := defaultPod()
seccompPod.Annotations = map[string]string{
api.SeccompPodAnnotationKey: "foo",
}
flexVolumePod := defaultPod()
flexVolumePod.Spec.Volumes = []api.Volume{
{
Name: "flex-volume",
VolumeSource: api.VolumeSource{
FlexVolume: &api.FlexVolumeSource{
Driver: "example/bar",
},
},
},
}
csiDriverPod := defaultPod()
csiDriverPod.Spec.Volumes = []api.Volume{
{
Name: "csi inline driver",
VolumeSource: api.VolumeSource{
CSI: &api.CSIVolumeSource{
Driver: "foo",
},
},
},
{
Name: "csi inline driver 2",
VolumeSource: api.VolumeSource{
CSI: &api.CSIVolumeSource{
Driver: "bar",
},
},
},
{
Name: "csi inline driver 3",
VolumeSource: api.VolumeSource{
CSI: &api.CSIVolumeSource{
Driver: "baz",
},
},
},
}
genericEphemeralPod := defaultPod()
genericEphemeralPod.Spec.Volumes = []api.Volume{
{
Name: "generic ephemeral volume",
VolumeSource: api.VolumeSource{
Ephemeral: &api.EphemeralVolumeSource{
VolumeClaimTemplate: &api.PersistentVolumeClaimTemplate{},
},
},
},
}
successCases := map[string]struct {
pod *api.Pod
psp *policy.PodSecurityPolicy
}{
"pass hostNetwork validating PSP": {
pod: hostNetworkPod,
psp: hostNetworkPSP,
},
"pass hostPID validating PSP": {
pod: hostPIDPod,
psp: hostPIDPSP,
},
"pass hostIPC validating PSP": {
pod: hostIPCPod,
psp: hostIPCPSP,
},
"pass required supplemental group validating PSP": {
pod: supGroupPod,
psp: supGroupMustPSP,
},
"pass optional supplemental group validation PSP": {
pod: supGroupPod,
psp: supGroupMayPSP,
},
"pass optional supplemental group validation PSP - no pod group specified": {
pod: defaultPod(),
psp: supGroupMayPSP,
},
"pass required fs group validating PSP": {
pod: fsGroupPod,
psp: fsGroupMustPSP,
},
"pass optional fs group validating PSP": {
pod: fsGroupPod,
psp: fsGroupMayPSP,
},
"pass optional fs group validating PSP - no pod group specified": {
pod: defaultPod(),
psp: fsGroupMayPSP,
},
"pass selinux validating PSP": {
pod: seLinuxPod,
psp: seLinuxPSP,
},
"pass sysctl specific profile with safe kernel sysctl": {
pod: safeSysctlKernelPod,
psp: sysctlAllowAllPSP,
},
"pass sysctl specific profile with unsafe kernel sysctl": {
pod: unsafeSysctlKernelPod,
psp: sysctlAllowAllPSP,
},
"pass hostDir allowed directory validating PSP": {
pod: hostPathDirPod,
psp: hostPathDirPSP,
},