Классный трюк @k8s (in)security

k8s (in)security | United States America (US)

Create: 2020-04-22 Update: 2025-07-05 03:06:54

Классный трюк, который может пригодиться при пентесте Kubernetes - а именно перечислить все services и порты во всех namespace'ах.

$ dig SRV +short any.svc.cluster.local
0 7 8888 10-244-100-5.node.demo.svc.cluster.local.
0 7 8888 10-244-85-199.node.demo.svc.cluster.local.
0 7 8888 10-244-85-201.node.demo.svc.cluster.local.
0 7 443 kubernetes.default.svc.cluster.local.
0 7 53 kube-dns.kube-system.svc.cluster.local.
0 7 9153 kube-dns.kube-system.svc.cluster.local.
0 7 80 nginx-webui.demo.svc.cluster.local.
0 7 6379 10-244-85-200.redis.demo.svc.cluster.local.

Из минусов это то, что нужна утилита dig из пакета dnsutils, но ее можно принести в контейнер потом.
Точно работает при дефолтно настроенном CoreDNS.

k8s (in)security

$ dig SRV +short any.svc.cluster.local
0 7 8888 10-244-100-5.node.demo.svc.cluster.local.
0 7 8888 10-244-85-199.node.demo.svc.cluster.local.
0 7 8888 10-244-85-201.node.demo.svc.cluster.local.
0 7 443 kubernetes.default.svc.cluster.local.
0 7 53 kube-dns.kube-system.svc.cluster.local.
0 7 9153 kube-dns.kube-system.svc.cluster.local.
0 7 80 nginx-webui.demo.svc.cluster.local.
0 7 6379 10-244-85-200.redis.demo.svc.cluster.local.

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705 viewsD1g1, Apr 22, 2020 at 16:51

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