- Kube-apiserver: Promoted `AuthorizeWithSelectors` feature to beta, which includes field and label selector information from requests in webhook authorization calls. Promoted `AuthorizeNodeWithSelectors` feature to beta, which changes node authorizer behavior to limit requests from node API clients, so that each Node can only get / list / watch its own Node API object, and can also only get / list / watch Pod API objects bound to that node. Clients using kubelet credentials to read other nodes...

- Improves performance of the node authorizer ([#87696](https://github.com/kubernetes/kubernetes/pull/87696), [@liggitt](https://github.com/liggitt)) [SIG Auth]

[API Aggregation](https://github.com/kubernetes/enhancements/issues/263) has been upgraded to "stable" in Kubernetes 1.10, so you can use it in production. Webhooks have seen numerous improvements, including alpha [Support for self-hosting authorizer webhooks](https://github.com/kubernetes/enhancements/issues/516).

### Auth

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- Added authorization check support to the CEL expressions of ValidatingAdmissionPolicy via a `authorizer`

		Description:    "The service is unavailable. Please retry.",
		HTTPStatusCode: http.StatusServiceUnavailable,
	},
	ErrUnauthorizedAccess: {
		Code:           "UnauthorizedAccess",
		Description:    "You are not authorized to perform this operation",
		HTTPStatusCode: http.StatusUnauthorized,
	},
	ErrExpressionTooLong: {
		Code:           "ExpressionTooLong",

adds an alpha AuthorizeNodeWithSelectors feature that makes the node authorizer limit requests from node API clients to get / list / watch its own Node API object, and to get / list / watch its own Pod API objects. Clients using kubelet credentials to read other nodes or unrelated pods must change their authentication credentials (recommended), adjust their usage, or grant broader read access independent of the node authorizer. ([#125571](https://github.com/kubernetes/kubernetes/pull/125571), [@...

    server.enqueue(MockResponse(body = "this response comes via HTTPS"))
    server.enqueue(MockResponse(body = "another response via HTTPS"))

    // install a custom SSL socket factory so the server can be authorized
    client =
      client.newBuilder()
        .sslSocketFactory(
          handshakeCertificates.sslSocketFactory(),
          handshakeCertificates.trustManager,
        )

### CVE-2022-3162: Unauthorized read of Custom Resources

A security issue was discovered in Kubernetes where users authorized to list or watch one type of namespaced custom resource cluster-wide can read custom resources of a different type in the same API group they are not authorized to read.

**Affected Versions**:
  - kube-apiserver v1.25.0 - v1.25.3
  - kube-apiserver v1.24.0 - v1.24.7

					}
				}
				if reader != nil && proxy.Proxy && perr == nil {
					gr = reader
				}
			}
		}
		if reader == nil || !proxy.Proxy {
			// validate if the request indeed was authorized, if it wasn't we need to return "ErrAccessDenied"
			// instead of any namespace related error.
			if s3Error := authorizeRequest(ctx, r, policy.GetObjectAction); s3Error != ErrNone {