- kube-apiserver v1.25.4
  - kube-apiserver v1.24.8
  - kube-apiserver v1.23.14
  - kube-apiserver v1.22.16

This vulnerability was reported by Richard Turnbull of NCC Group as part of the Kubernetes Audit


**CVSS Rating:** Medium (6.5) [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)

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- The EndpointSlice controller now waits for EndpointSlice and Node caches to be synced before starting. ([#94086](https://github.com/kubernetes/kubernetes/pull/94086), [@robscott](https://github.com/robscott)) [SIG Apps and Network]
- The audit event sourceIPs list will now always end with the IP that sent the request directly to the API server. ([#87167](https://github.com/kubernetes/kubernetes/pull/87167), [@tallclair](https://github.com/tallclair)) [SIG API Machinery and Auth]

    server.enqueue(
      MockResponse
        .Builder()
        .status("ICY 200 OK")
        .addHeader("Accept-Ranges: none")
        .addHeader("Content-Type: audio/mpeg")
        .addHeader("icy-br:128")
        .addHeader("ice-audio-info: bitrate=128;samplerate=44100;channels=2")
        .addHeader("icy-br:128")
        .addHeader("icy-description:Rock")
        .addHeader("icy-genre:riders")

- Adds apiserver.latency.k8s.io/authentication annotation to the audit log to record the time spent authenticating slow requests.

- The audit event sourceIPs list will now always end with the IP that sent the request directly to the API server. ([#87167](https://github.com/kubernetes/kubernetes/pull/87167), [@tallclair](https://github.com/tallclair)) [SIG API Machinery and Auth]

- X.509 client certificate authentication to the kube-apiserver now produces credential IDs (derived from the certificate's signature) , for use in audit logging. ([#125634](https://github.com/kubernetes/kubernetes/pull/125634), [@ahmedtd](https://github.com/ahmedtd)) [SIG API Machinery, Auth and Testing]

### Feature

- Fixed a bug that caused apiservers to send an inappropriate Content-Type request header to authorization, token authentication, imagepolicy admission, and audit webhooks when the alpha client-go feature gate "ClientsPreferCBOR" is enabled. ([#132960](https://github.com/kubernetes/kubernetes/pull/132960), [@benluddy](https://github.com/benluddy)) [SIG API Machinery and Node]

- Updated an audit annotation key used by the `…/serviceaccounts/<name>/token` resource handler.

	opts.sessionPolicy = sp

	return ctx, cred, opts, createReq, targetUser, APIError{}
}

// setReqInfoPolicyName will set the given policyName as a tag on the context's request info,
// so that it appears in audit logs.
func setReqInfoPolicyName(ctx context.Context, policyName string) {
	reqInfo := logger.GetReqInfo(ctx)
	reqInfo.SetTags("policyName", policyName)