through the built-in NodeRestriction admission plugin.

**Affected Versions**:
  - kube-apiserver v1.20.0 - v1.20.5
  - kube-apiserver v1.19.0 - v1.19.9
  - kube-apiserver <= v1.18.17

**Fixed Versions**:
  - kube-apiserver v1.21.0
  - kube-apiserver v1.20.6
  - kube-apiserver v1.19.10
  - kube-apiserver v1.18.18

This vulnerability was reported by Rogerio Bastos & Ari Lima from RedHat

    * The body size limit does not apply to subresources like pods/proxy that proxy request content to another server.

    * The body size limit does not apply to subresources like pods/proxy that proxy request content to another server.

  // DNS in some apiservers (e.g., `kube-apiserver` cannot resolve
  // in-cluster DNS as that would be a layering violation). `host` may
  // also be an IP address.
  //
  // Please note that using `localhost` or `127.0.0.1` as a `host` is
  // risky unless you take great care to run this webhook on all hosts
  // which run an apiserver which might need to make calls to this

}

// GroupSubject holds detailed information for group-kind subject.
message GroupSubject {
  // name is the user group that matches, or "*" to match all user groups.
  // See https://github.com/kubernetes/apiserver/blob/master/pkg/authentication/user/user.go for some
  // well-known group names.
  // Required.
  optional string name = 1;
}

// LimitResponse defines how to handle requests that can not be executed right now.

        *  Don't break metric storage when duplicate pod metrics encountered causing hpa to fail
* kube-apiserver: Fixed a regression accepting patch requests > 1MB ([#84963](https://github.com/kubernetes/kubernetes/pull/84963), [@liggitt](https://github.com/liggitt))

}

// GroupSubject holds detailed information for group-kind subject.
message GroupSubject {
  // name is the user group that matches, or "*" to match all user groups.
  // See https://github.com/kubernetes/apiserver/blob/master/pkg/authentication/user/user.go for some
  // well-known group names.
  // Required.
  optional string name = 1;
}

// LimitResponse defines how to handle requests that can not be executed right now.

}

// GroupSubject holds detailed information for group-kind subject.
message GroupSubject {
  // name is the user group that matches, or "*" to match all user groups.
  // See https://github.com/kubernetes/apiserver/blob/master/pkg/authentication/user/user.go for some
  // well-known group names.
  // Required.
  optional string name = 1;
}

// LimitResponse defines how to handle requests that can not be executed right now.

k8s.io/apiextensions-apiserver v0.31.2 h1:W8EwUb8+WXBLu56ser5IudT2cOho0gAKeTOnywBLxd0=
k8s.io/apiextensions-apiserver v0.31.2/go.mod h1:i+Geh+nGCJEGiCGR3MlBDkS7koHIIKWVfWeRFiOsUcM=
k8s.io/apimachinery v0.31.2 h1:i4vUt2hPK56W6mlT7Ry+AO8eEsyxMD1U44NR22CLTYw=
k8s.io/apimachinery v0.31.2/go.mod h1:rsPdaZJfTfLsNJSQzNHQvYoTmxhoOEofxtOsF3rtsMo=
k8s.io/apiserver v0.31.2 h1:VUzOEUGRCDi6kX1OyQ801m4A7AUPglpsmGvdsekmcI4=

* kube-apiserver: Fixed a regression accepting patch requests > 1MB ([#84963](https://github.com/kubernetes/kubernetes/pull/84963), [@liggitt](https://github.com/liggitt))