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pod_test.go
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// Copyright 2019 FairwindsOps Inc
//
// 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 validator
import (
"testing"
"github.com/stretchr/testify/assert"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
conf "github.com/fairwindsops/polaris/pkg/config"
"github.com/fairwindsops/polaris/pkg/kube"
"github.com/fairwindsops/polaris/test"
)
func TestValidatePod(t *testing.T) {
c := conf.Configuration{
Checks: map[string]conf.Severity{
"hostIPCSet": conf.SeverityDanger,
"hostPIDSet": conf.SeverityDanger,
"hostNetworkSet": conf.SeverityWarning,
"hostPortSet": conf.SeverityDanger,
"hostPathSet": conf.SeverityWarning,
"procMount": conf.SeverityWarning,
"hostProcess": conf.SeverityWarning,
},
}
p := test.MockPod()
deployment, err := kube.NewGenericResourceFromPod(p, nil)
assert.NoError(t, err)
expectedSum := CountSummary{
Successes: uint(7),
Warnings: uint(0),
Dangers: uint(0),
}
expectedResults := ResultSet{
"hostIPCSet": {ID: "hostIPCSet", Message: "Host IPC is not configured", Success: true, Severity: "danger", Category: "Security"},
"hostNetworkSet": {ID: "hostNetworkSet", Message: "Host network is not configured", Success: true, Severity: "warning", Category: "Security"},
"hostPIDSet": {ID: "hostPIDSet", Message: "Host PID is not configured", Success: true, Severity: "danger", Category: "Security"},
"hostPathSet": {ID: "hostPathSet", Message: "HostPath volumes are not configured", Success: true, Severity: "warning", Category: "Security"},
"procMount": {ID: "procMount", Message: "The default /proc masks are set up to reduce attack surface, and should be required", Success: true, Severity: "warning", Category: "Security"},
"hostProcess": {ID: "hostProcess", Message: "Privileged access to the host check is valid", Success: true, Severity: "warning", Category: "Security"},
}
actualPodResult, err := applyControllerSchemaChecks(&c, nil, deployment)
if err != nil {
panic(err)
}
assert.Equal(t, 1, len(actualPodResult.PodResult.ContainerResults), "should be equal")
assert.EqualValues(t, expectedSum, actualPodResult.GetSummary())
assert.EqualValues(t, expectedResults, actualPodResult.PodResult.Results)
}
func TestInvalidIPCPod(t *testing.T) {
c := conf.Configuration{
Checks: map[string]conf.Severity{
"hostIPCSet": conf.SeverityDanger,
"hostPIDSet": conf.SeverityDanger,
"hostNetworkSet": conf.SeverityWarning,
"hostPortSet": conf.SeverityDanger,
"hostPathSet": conf.SeverityWarning,
"procMount": conf.SeverityWarning,
"hostProcess": conf.SeverityWarning,
},
}
p := test.MockPod()
p.Spec.HostIPC = true
p.Spec.Volumes = append(p.Spec.Volumes, v1.Volume{
Name: "hostpath",
VolumeSource: v1.VolumeSource{
HostPath: &v1.HostPathVolumeSource{
Path: "/var/run/docker.sock",
},
},
})
procMount := v1.UnmaskedProcMount
p.Spec.Containers[0].SecurityContext = &v1.SecurityContext{
ProcMount: &procMount,
}
hostProcess := true
p.Spec.Containers[0].SecurityContext.WindowsOptions = &v1.WindowsSecurityContextOptions{
HostProcess: &hostProcess,
}
workload, err := kube.NewGenericResourceFromPod(p, nil)
assert.NoError(t, err)
expectedSum := CountSummary{
Successes: uint(3),
Warnings: uint(3),
Dangers: uint(1),
}
expectedResults := ResultSet{
"hostIPCSet": {ID: "hostIPCSet", Message: "Host IPC should not be configured", Success: false, Severity: "danger", Category: "Security"},
"hostNetworkSet": {ID: "hostNetworkSet", Message: "Host network is not configured", Success: true, Severity: "warning", Category: "Security"},
"hostPIDSet": {ID: "hostPIDSet", Message: "Host PID is not configured", Success: true, Severity: "danger", Category: "Security"},
"hostPathSet": {ID: "hostPathSet", Message: "HostPath volumes must be forbidden", Success: false, Severity: "warning", Category: "Security"},
"procMount": {ID: "procMount", Message: "Proc mount must not be changed from the default", Success: false, Severity: "warning", Category: "Security"},
"hostProcess": {ID: "hostProcess", Message: "Privileged access to the host is disallowed", Success: false, Severity: "warning", Category: "Security"},
}
actualPodResult, err := applyControllerSchemaChecks(&c, nil, workload)
if err != nil {
panic(err)
}
assert.Equal(t, 1, len(actualPodResult.PodResult.ContainerResults), "should be equal")
assert.EqualValues(t, expectedSum, actualPodResult.GetSummary())
assert.EqualValues(t, expectedResults, actualPodResult.PodResult.Results)
}
func TestInvalidNetworkPod(t *testing.T) {
c := conf.Configuration{
Checks: map[string]conf.Severity{
"hostNetworkSet": conf.SeverityWarning,
"hostPortSet": conf.SeverityDanger,
"hostIPCSet": conf.SeverityDanger,
"hostPIDSet": conf.SeverityDanger,
},
}
p := test.MockPod()
p.Spec.HostNetwork = true
workload, err := kube.NewGenericResourceFromPod(p, nil)
assert.NoError(t, err)
expectedSum := CountSummary{
Successes: uint(3),
Warnings: uint(1),
Dangers: uint(0),
}
expectedResults := ResultSet{
"hostNetworkSet": {ID: "hostNetworkSet", Message: "Host network should not be configured", Success: false, Severity: "warning", Category: "Security"},
"hostIPCSet": {ID: "hostIPCSet", Message: "Host IPC is not configured", Success: true, Severity: "danger", Category: "Security"},
"hostPIDSet": {ID: "hostPIDSet", Message: "Host PID is not configured", Success: true, Severity: "danger", Category: "Security"},
}
actualPodResult, err := applyControllerSchemaChecks(&c, nil, workload)
if err != nil {
panic(err)
}
assert.Equal(t, 1, len(actualPodResult.PodResult.ContainerResults), "should be equal")
assert.EqualValues(t, expectedSum, actualPodResult.GetSummary())
assert.EqualValues(t, expectedResults, actualPodResult.PodResult.Results)
}
func TestInvalidPIDPod(t *testing.T) {
c := conf.Configuration{
Checks: map[string]conf.Severity{
"hostIPCSet": conf.SeverityDanger,
"hostPIDSet": conf.SeverityDanger,
"hostNetworkSet": conf.SeverityWarning,
"hostPortSet": conf.SeverityDanger,
},
}
p := test.MockPod()
p.Spec.HostPID = true
workload, err := kube.NewGenericResourceFromPod(p, nil)
assert.NoError(t, err)
expectedSum := CountSummary{
Successes: uint(3),
Warnings: uint(0),
Dangers: uint(1),
}
expectedResults := ResultSet{
"hostPIDSet": {ID: "hostPIDSet", Message: "Host PID should not be configured", Success: false, Severity: "danger", Category: "Security"},
"hostIPCSet": {ID: "hostIPCSet", Message: "Host IPC is not configured", Success: true, Severity: "danger", Category: "Security"},
"hostNetworkSet": {ID: "hostNetworkSet", Message: "Host network is not configured", Success: true, Severity: "warning", Category: "Security"},
}
actualPodResult, err := applyControllerSchemaChecks(&c, nil, workload)
if err != nil {
panic(err)
}
assert.Equal(t, 1, len(actualPodResult.PodResult.ContainerResults), "should be equal")
assert.EqualValues(t, expectedSum, actualPodResult.GetSummary())
assert.EqualValues(t, expectedResults, actualPodResult.PodResult.Results)
}
func TestExemption(t *testing.T) {
c := conf.Configuration{
Checks: map[string]conf.Severity{
"hostIPCSet": conf.SeverityDanger,
"hostNetworkSet": conf.SeverityWarning,
"hostPIDSet": conf.SeverityDanger,
"hostPortSet": conf.SeverityDanger,
},
Exemptions: []conf.Exemption{
{
Rules: []string{"hostIPCSet"},
ControllerNames: []string{"foo"},
},
},
}
p := test.MockPod()
p.Spec.HostIPC = true
p.ObjectMeta = metav1.ObjectMeta{
Name: "foo",
}
workload, err := kube.NewGenericResourceFromPod(p, nil)
assert.NoError(t, err)
expectedSum := CountSummary{
Successes: uint(3),
Warnings: uint(0),
Dangers: uint(0),
}
expectedResults := ResultSet{
"hostNetworkSet": {ID: "hostNetworkSet", Message: "Host network is not configured", Success: true, Severity: "warning", Category: "Security"},
"hostPIDSet": {ID: "hostPIDSet", Message: "Host PID is not configured", Success: true, Severity: "danger", Category: "Security"},
}
actualPodResult, err := applyControllerSchemaChecks(&c, nil, workload)
if err != nil {
panic(err)
}
assert.Equal(t, 1, len(actualPodResult.PodResult.ContainerResults), "should be equal")
assert.EqualValues(t, expectedSum, actualPodResult.GetSummary())
assert.EqualValues(t, expectedResults, actualPodResult.PodResult.Results)
}