Описание
A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.
A security issue was discovered in Kubernetes where an authorized user may be able to redirect traffic to private networks on a Node. An untrusted user could exploit this by creating or modifying EndpointSlices to point to localhost or link-local addresses.
Отчет
OpenShift Container Platform (OCP) 3.11 is not affected by this vulnerability as it does not support EndpointSlices. All current versions of OCP 4 support EndpointSlices and are therefore affected.
Меры по смягчению последствий
- Prevent untrusted users from creating or modifying EndpointSlices
- Creating a validating admission webhook that prevents EndpointSlices with endpoint addresses in the 127.0.0.0/8 and 169.254.0.0/16 ranges
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat OpenShift Container Platform 3.11 | atomic-openshift | Not affected | ||
| Red Hat OpenShift Container Platform 4.8 | openshift | Fixed | RHSA-2021:2437 | 27.07.2021 |
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Дополнительная информация
Статус:
2.7 Low
CVSS3
Связанные уязвимости
A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.
A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.
A security issue was discovered in Kubernetes where a user may be able ...
Incomplete List of Disallowed Inputs in Kubernetes
Уязвимость программного средства управления кластерами виртуальных машин Kubernetes, связанная с использованием открытой переадресации, позволяющая нарушителю получить доступ к конфиденциальным данным и нарушить их целостность
2.7 Low
CVSS3