Feature Overview (aka. Goal Summary)  

RedHat allows following roles for system:anonymous user and system:unauthenticated group: 

oc get clusterrolebindings -o json | jq '.items[] | select(.subjects[]?.kind

== "Group" and .subjects[]?.name == "system:unauthenticated") |

.metadata.name' | uniq

Returns what unauthenticated users can do, which is the following:

"self-access-reviewers"

"system:oauth-token-deleters"

"system:openshift:public-info-viewer"

"system:public-info-viewer"

"system:scope-impersonation"

"system:webhooks"

Customers would like to minimize the allowed permissions to unauthenticated groups and users. 

It was determined after initial analysis that following roles are necessary for OIDC access and version information and will not change   

"system:openshift:public-info-viewer"

"system:public-info-viewer"

Workaround available: Gating the access with policy engines 

Expected: Minimize the allowed roles for unauthenticated access 

Goals (aka. expected user outcomes)

Reduce use of cluster-wide permissions for system:anonymous user and  system:unauthenticated group for following roles

"self-access-reviewers"

"system:oauth-token-deleters"

"system:scope-impersonation"

"system:webhooks"

Requirements (aka. Acceptance Criteria):

Customers would like to minimize the allowed permissions to unauthenticated groups and users. 

Anyone reviewing this Feature needs to know which deployment configurations that the Feature will apply to (or not) once it's been completed.  Describe specific needs (or indicate N/A) for each of the following deployment scenarios. For specific configurations that are out-of-scope for a given release, ensure you provide the OCPSTRAT (for the future to be supported configuration) as well.

Use Cases (Optional):

Include use case diagrams, main success scenarios, alternative flow scenarios.  Initial completion during Refinement status.

<your text here>

Questions to Answer (Optional):

Include a list of refinement / architectural questions that may need to be answered before coding can begin.  Initial completion during Refinement status.

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Out of Scope

High-level list of items that are out of scope.  Initial completion during Refinement status.

It was determined that following roles will not change

"system:openshift:public-info-viewer"

"system:public-info-viewer"

Background

Provide any additional context is needed to frame the feature.  Initial completion during Refinement status.

Many security teams have flagged anonymous access on apiserver as a security risk. Reducing the permissions granted at cluster level helps in hardening access to apiserver. 

Customer Considerations

Provide any additional customer-specific considerations that must be made when designing and delivering the Feature.  Initial completion during Refinement status.

This feature should not impact upgrade from previous versions. 

This feature will allow enabling the new functionality for fresh installs. 

Documentation Considerations

Provide information that needs to be considered and planned so that documentation will meet customer needs.  If the feature extends existing functionality, provide a link to its current documentation. Initial completion during Refinement status.

Impact to existing usecases should be documented 

Interoperability Considerations

Which other projects, including ROSA/OSD/ARO, and versions in our portfolio does this feature impact?  What interoperability test scenarios should be factored by the layered products?  Initial completion during Refinement status.

<your text here>