[v16] [kube] fix greedy deny rule blocking namespace list when blocking other resources #44974
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…er resources
This PR fixes an edge case where the deny rule for blocking access to a resource becomes greedy and blocks access to the whole namespace.
eg:
```
allow:
kubernetes_labels:
'*': '*'
kubernetes_resources:
- kind: '*'
name: '*'
namespace: '*'
verbs:
- '*'
deny:
kubernetes_resources:
- kind: secret
name: '*'
namespace: '*'
verbs:
- '*'
```
With the example above, access to secrets must be blocked but the user is allowed to access every other resource in any namespace.
The previous model was greedy and blocked access to namespace list.
hugoShaka
approved these changes
Aug 1, 2024
rosstimothy
approved these changes
Aug 1, 2024
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Backport #44893 to branch/v16
changelog: Prevent Kubernetes per-Resource RBAC from blocking access to namespaces when denying access to a single resource kind in every namespace.