azure: Grant control-plane VMSS Contributor instead of Owner - #18533
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The built-in Owner role includes Microsoft.Authorization/roleAssignments/write, a privilege-escalation path reachable by any pod via the instance metadata endpoint. No cluster component uses Microsoft.Authorization; Contributor covers everything the control plane needs. Existing clusters keep the old Owner role assignment until it is removed manually or the cluster is deleted; the terraform target prunes it on apply.
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/test pull-kops-e2e-azure-cni-cilium |
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: hakman, rifelpet The full list of commands accepted by this bot can be found here. The pull request process is described here DetailsNeeds approval from an approver in each of these files:
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…-upstream-release-1.36 Automated cherry pick of #18533: azure: Grant control-plane VMSS Contributor instead of Owner
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The built-in Owner role includes Microsoft.Authorization/roleAssignments/write, a privilege-escalation path reachable by any pod via the instance metadata endpoint. No cluster component uses Microsoft.Authorization; Contributor covers everything the control plane needs.
Existing clusters keep the old Owner role assignment until it is removed manually or the cluster is deleted; the terraform target prunes it on apply.
/cc @rifelpet @ameukam