Update eventlistener podSeurityContext to adhere to restricted pod se… #1740

kristofferchr · 2024-07-01T22:11:47Z

Solves issue #1739

Currently, when el-security-context is enabled, the securityContext for EventListener in the pod template only sets runAsNonRoot. Expanding podTemplate securityContext can make it easier to fulfill restricted pod security standards.

Makes it possible to have a default securityContext set for injected sidecar containers that does not fulfill restricted pod security standars. An example of this is injected istio containers.

Changes

Alter podSecurityContext to include seccompProfile, runAsUser, runAsGroup and fsGroup when set-security-context is set.

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Release Notes

Eventlistener podTemplate now includes securityContext settings: seccompProfile, runAsUser, runAsGroup, and fsGroup when flag el-security-context is true.

tekton-robot · 2024-07-01T22:11:56Z

Hi @kristofferchr. Thanks for your PR.

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linux-foundation-easycla · 2024-07-01T22:12:09Z

The committers listed above are authorized under a signed CLA.

✅ login: kristofferchr / name: Kristoffer Moberg Christensen (19b92f4)

kristofferchr · 2024-07-01T22:12:15Z

/kind feature

khrm

/ok-to-test

kristofferchr · 2024-07-02T08:06:58Z

/retest

kristofferchr · 2024-07-02T18:24:42Z

/retest

savitaashture · 2024-07-04T05:40:28Z

pkg/reconciler/eventlistener/resources/deployment.go

+func getStrongerSecurityPolicy(cfg *config.Config) corev1.PodSecurityContext {
+	securityContext := baseStrongerSecurityPolicy
+	securityContext.RunAsUser = ptr.Int64(cfg.Defaults.DefaultRunAsUser)
+	securityContext.RunAsGroup = ptr.Int64(cfg.Defaults.DefaultRunAsGroup)
+	securityContext.FSGroup = ptr.Int64(cfg.Defaults.DefaultRunAsGroup)
+	return securityContext
+}
+


We already setting these values here https://github.com/tektoncd/triggers/blob/main/pkg/reconciler/eventlistener/resources/container.go#L53-L68

except FSGroup

if you want to add FSGroup can you update this https://github.com/tektoncd/triggers/blob/main/pkg/reconciler/eventlistener/resources/container.go#L53-L68 part of the code

I checked my specific use case again(istio injected sidecars) and it appears runAsGroup and runAsUser is set for that container.

However, i would like to keep seccompProfile as it is not set and therefore violates restricted pod security standards.
FSGroup is not available in container securityContext, only PodSecurityContext.

I can remove runAsGroup and runAsUser if you do not wish to have a pod level default.

I think we can keep for pod level as well i don't see issue

cc @khrm @dibyom

Is there anything that is missing or changes that is required for this PR before approval?

Ping @savitaashture @khrm

kristofferchr · 2024-08-05T11:53:20Z

bump @khrm @savitaashture

savitaashture · 2024-08-05T16:07:25Z

pkg/reconciler/eventlistener/resources/deployment.go

+	securityContext.RunAsUser = ptr.Int64(cfg.Defaults.DefaultRunAsUser)
+	securityContext.RunAsGroup = ptr.Int64(cfg.Defaults.DefaultRunAsGroup)


Hi @kristofferchr
For runAsUser and runAsGroup
can you handle similar to this https://github.com/tektoncd/triggers/blob/main/pkg/reconciler/eventlistener/resources/container.go#L71-L76
because In a platform like OpenShift we set "" value so lets keep runAsUser and runAsGroup when its actually set

Certainly. FSGroup as well?

Implemented and added tests.

savitaashture · 2024-08-06T07:51:28Z

pkg/reconciler/eventlistener/resources/deployment.go

+
+	if !cfg.Defaults.IsDefaultRunAsGroupEmpty {
+		securityContext.RunAsGroup = ptr.Int64(cfg.Defaults.DefaultRunAsGroup)
+		securityContext.FSGroup = ptr.Int64(cfg.Defaults.DefaultRunAsGroup)


Is FSGroup and runAsGroup same ??

I set them as the same, as i do not need change it for my use case. Should i make it configurable through a Defaults or wait for a specific use case?

IMO lets wait for a specific case
we can add it whenever we have usecase

agreed. I will keep it as it is with FSGroup set to RunAsGroup

Oh wait my point is can we completly remove FSGroup or is it required ?

I need it for my usecase to adhere to aks policy: https://github.com/Azure/azure-policy/blob/master/built-in-policies/policySetDefinitions/Kubernetes/PSPRestrictedStandard.json#L256

Currently we need policy exemptions because of this requirement.

I set them as the same, as i do not need change it for my use case. Should i make it configurable through a Defaults or wait for a specific use case?

Shall we configure it so that if someone wants they can set to different value
as both FSGroup and RUnAsGroup functionality is different

Once you add the configuration for FSGroup smilar to RunAsGroup I think we are good to merge

@savitaashture updated :)

kristofferchr · 2024-08-06T08:04:13Z

/retest

…curity standards Alter podSecurityContext to include seccompProfile, runAsUser, runAsGroup and fsGroup when set-security-context is set. As podSecurityContext only included runAsNonRoot, which could cause injected sidecars to miss some required restricted pod security standards securityContext fields.

tekton-robot · 2024-08-16T11:29:00Z

The following is the coverage report on the affected files.
Say /test pull-tekton-triggers-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/apis/config/default.go	88.2%	87.8%	-0.4

tekton-robot · 2024-08-19T08:10:58Z

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: savitaashture

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khrm

/lgtm

…curityContext for Triggers as part of this PR tektoncd/triggers#1740 we've introduced an FSGroup setting to comply with restricted pod security standards for the podTemplate. But the default value 65532 won't work on OpenShift so setting by default for FSGroup Signed-off-by: Savita Ashture <[email protected]>

tekton-robot added the release-note Denotes a PR that will be considered when it comes time to generate release notes. label Jul 1, 2024

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tekton-robot requested review from bobcatfish and dibyom July 1, 2024 22:11

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kristofferchr force-pushed the feature/add-stronger-security-context-pod-template branch 2 times, most recently from cf0b25d to 53e47ba Compare July 2, 2024 20:30

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kristofferchr force-pushed the feature/add-stronger-security-context-pod-template branch from 53e47ba to 38745aa Compare July 15, 2024 10:41

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kristofferchr force-pushed the feature/add-stronger-security-context-pod-template branch 2 times, most recently from dedb181 to c91c57b Compare July 15, 2024 10:49

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kristofferchr force-pushed the feature/add-stronger-security-context-pod-template branch from c91c57b to f669160 Compare August 6, 2024 07:41

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kristofferchr force-pushed the feature/add-stronger-security-context-pod-template branch from f669160 to 10b5ec4 Compare August 6, 2024 08:38

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savitaashture approved these changes Aug 19, 2024

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tekton-robot merged commit e4cd11d into tektoncd:main Aug 19, 2024
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savitaashture mentioned this pull request Aug 19, 2024

Update triggers default configmap for FSGroup to handle restricted securityContext for Triggers tektoncd/operator#2285

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kristofferchr deleted the feature/add-stronger-security-context-pod-template branch August 19, 2024 08:26

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		securityContext.RunAsUser = ptr.Int64(cfg.Defaults.DefaultRunAsUser)
		securityContext.RunAsGroup = ptr.Int64(cfg.Defaults.DefaultRunAsGroup)

Update eventlistener podSeurityContext to adhere to restricted pod se… #1740

Update eventlistener podSeurityContext to adhere to restricted pod se… #1740

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