POJIA破甲
地图 / Node disk DOS by writing to container /etc/hosts

Node disk DOS by writing to container /etc/hosts

拒绝服务 / 资源消耗失控 / #867699

厂商
Kubernetes
严重程度
低危 · CVSS 5.5
赏金
$1,000
弱点
资源消耗失控
研究员
@kebe
披露日期
2020-07-22
资产
https://github.com/kubernetes/kubernetes
CVE
CVE-2020-8557

该报告还没有中文解读。

原文摘录

摘自原文(3692 字符中的一小部分)
Summary: Pod files /etc/hosts, /etc/hostname, /etc/resolve.conf are not readonly. A normal pod running in kubernetes cluster can kil a host through write data to /etc/hosts. Not only /etc/hosts, but also /etc/resolve.conf and /etc/hostname can do this.
原文中的代码
[root@kebe-sm-315 ~]# kubectl exec -it rate-c848c5c8b-5b8vm sh
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl kubectl exec [POD] -- [COMMAND] instead.
Defaulting container name to rate.
Use 'kubectl describe pod/rate-c848c5c8b-5b8vm -n default' to …

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 @kebe · 版权归作者与 Kubernetes 所有

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