Описание
Users may have access to secure endpoints in the control plane network. Kubernetes clusters are only affected if an untrusted user can modify Node objects and send proxy requests to them. Kubernetes supports node proxying, which allows clients of kube-apiserver to access endpoints of a Kubelet to establish connections to Pods, retrieve container logs, and more. While Kubernetes already validates the proxying address for Nodes, a bug in kube-apiserver made it possible to bypass this validation. Bypassing this validation could allow authenticated requests destined for Nodes to to the API server's private network.
A flaw was found in Kubernetes, where users may have access to secure endpoints in the control plane network. Kubernetes supports node proxying, which allows clients of kube-apiserver to access endpoints of a Kubelet to establish connections to Pods, retrieve container logs, and more. While Kubernetes already validates the proxying address for Nodes, a bug in the kube-apiserver made it possible to bypass this validation. Bypassing this validation allows authenticated requests destined for Nodes to redirect to the API Server through its private network.
Отчет
Kubernetes clusters are only affected if an untrusted user can modify Node objects and send requests proxying through them. The "openshift" component of Red Hat OpenShift Container Platform 4 was fixed in RHBA-2023:0452 and as such is marked not affected.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat OpenShift Container Platform 3.11 | atomic-openshift | Out of support scope | ||
| Red Hat OpenShift Container Platform 4 | openshift | Not affected | ||
| Red Hat OpenShift Container Platform 4 | openshift4/ose-tests | Not affected | ||
| Red Hat OpenShift Container Platform 4.12 | microshift | Fixed | RHBA-2023:0452 | 30.01.2023 |
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Дополнительная информация
Статус:
EPSS
8.8 High
CVSS3
Связанные уязвимости
Users may have access to secure endpoints in the control plane network. Kubernetes clusters are only affected if an untrusted user can modify Node objects and send proxy requests to them. Kubernetes supports node proxying, which allows clients of kube-apiserver to access endpoints of a Kubelet to establish connections to Pods, retrieve container logs, and more. While Kubernetes already validates the proxying address for Nodes, a bug in kube-apiserver made it possible to bypass this validation. Bypassing this validation could allow authenticated requests destined for Nodes to to the API server's private network.
Users may have access to secure endpoints in the control plane network. Kubernetes clusters are only affected if an untrusted user can modify Node objects and send proxy requests to them. Kubernetes supports node proxying, which allows clients of kube-apiserver to access endpoints of a Kubelet to establish connections to Pods, retrieve container logs, and more. While Kubernetes already validates the proxying address for Nodes, a bug in kube-apiserver made it possible to bypass this validation. Bypassing this validation could allow authenticated requests destined for Nodes to to the API server's private network.
Users may have access to secure endpoints in the control plane network ...
Уязвимость Kube API-сервера программного средства управления кластерами виртуальных машин Kubernetes, позволяющая нарушителю выполнить произвольные запросы
EPSS
8.8 High
CVSS3