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Implement annotation validation (#9673)

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* Add validation to all annotations

* Add annotation validation for fcgi

* Fix reviews and fcgi e2e

* Add flag to disable cross namespace validation

* Add risk, flag for validation, tests

* Add missing formating

* Enable validation by default on tests

* Test validation flag

* remove ajp from list

* Finalize validation changes

* Add validations to CI

* Update helm docs

* Fix code review

* Use a better name for annotation risk
This commit is contained in:
Ricardo Katz 2023-07-22 00:32:07 -03:00 • committed by GitHub
parent 86c00a2310
commit c5f348ea2e
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109 changed files with 4320 additions and 586 deletions
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test/e2e/settings/validations/validations.go Normal file
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/*
Copyright 2023 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 annotations
import (
"context"
"github.com/onsi/ginkgo/v2"
"github.com/stretchr/testify/assert"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/ingress-nginx/test/e2e/framework"
)
var _ = framework.IngressNginxDescribeSerial("annotation validations", func() {
f := framework.NewDefaultFramework("validations")
ginkgo.It("should allow ingress based on their risk on webhooks", func() {
host := "annotation-validations"
// Low and Medium Risk annotations should be allowed, the rest should be denied
f.UpdateNginxConfigMapData("annotations-risk-level", "Medium")
// Sleep a while just to guarantee that the configmap is applied
framework.Sleep()
annotations := map[string]string{
"nginx.ingress.kubernetes.io/default-backend": "default/bla", // low risk
"nginx.ingress.kubernetes.io/denylist-source-range": "1.1.1.1/32", // medium risk
}
ginkgo.By("allow ingress with low/medium risk annotations")
ing := framework.NewSingleIngress(host, "/", host, f.Namespace, framework.EchoService, 80, annotations)
_, err := f.KubeClientSet.NetworkingV1().Ingresses(f.Namespace).Create(context.TODO(), ing, metav1.CreateOptions{})
assert.Nil(ginkgo.GinkgoT(), err, "creating ingress with allowed annotations should not trigger an error")
ginkgo.By("block ingress with risky annotations")
annotations["nginx.ingress.kubernetes.io/modsecurity-transaction-id"] = "bla123" // High should be blocked
annotations["nginx.ingress.kubernetes.io/modsecurity-snippet"] = "some random stuff;" // High should be blocked
ing = framework.NewSingleIngress(host, "/", host, f.Namespace, framework.EchoService, 80, annotations)
_, err = f.KubeClientSet.NetworkingV1().Ingresses(f.Namespace).Update(context.TODO(), ing, metav1.UpdateOptions{})
assert.NotNil(ginkgo.GinkgoT(), err, "creating ingress with risky annotations should trigger an error")
})
ginkgo.It("should allow ingress based on their risk on webhooks", func() {
host := "annotation-validations"
// Low and Medium Risk annotations should be allowed, the rest should be denied
f.UpdateNginxConfigMapData("annotations-risk-level", "Medium")
// Sleep a while just to guarantee that the configmap is applied
framework.Sleep()
annotations := map[string]string{
"nginx.ingress.kubernetes.io/default-backend": "default/bla", // low risk
"nginx.ingress.kubernetes.io/denylist-source-range": "1.1.1.1/32", // medium risk
}
ginkgo.By("allow ingress with low/medium risk annotations")
ing := framework.NewSingleIngress(host, "/", host, f.Namespace, framework.EchoService, 80, annotations)
_, err := f.KubeClientSet.NetworkingV1().Ingresses(f.Namespace).Create(context.TODO(), ing, metav1.CreateOptions{})
assert.Nil(ginkgo.GinkgoT(), err, "creating ingress with allowed annotations should not trigger an error")
ginkgo.By("block ingress with risky annotations")
annotations["nginx.ingress.kubernetes.io/modsecurity-transaction-id"] = "bla123" // High should be blocked
annotations["nginx.ingress.kubernetes.io/modsecurity-snippet"] = "some random stuff;" // High should be blocked
ing = framework.NewSingleIngress(host, "/", host, f.Namespace, framework.EchoService, 80, annotations)
_, err = f.KubeClientSet.NetworkingV1().Ingresses(f.Namespace).Update(context.TODO(), ing, metav1.UpdateOptions{})
assert.NotNil(ginkgo.GinkgoT(), err, "creating ingress with risky annotations should trigger an error")
})
})