EPISODE · Nov 26, 2018 · 44 MIN
2018-041: part 2 of Kubernetes security insights w/ ian Coldwater
from BrakeSec Education Podcast
@IanColdwater https://www.redteamsecure.com/ *new gig* So many different moving parts Plugins Code Hardware She's working on speaking schedule for 2019 How would I use these at home? https://kubernetes.io/docs/setup/minikube/ Kubernetes - up and running https://www.amazon.com/Kubernetes-Running-Dive-Future-Infrastructure/dp/1491935677 General wikipedia article (with architecture diagram): https://en.wikipedia.org/wiki/Kubernetes https://twitter.com/alicegoldfuss - Alice Goldfuss Derbycon Talk: http://www.irongeek.com/i.php?page=videos/derbycon8/track-3-10-perfect-storm-taking-the-helm-of-kubernetes-ian-coldwater Tesla mis-configured Kubes env: From the talk: https://arstechnica.com/information-technology/2018/02/tesla-cloud-resources-are-hacked-to-run-cryptocurrency-mining-malware/ Redlock report mentioned in Ars article: https://redlock.io/blog/cryptojacking-tesla Setup your own K8s environment: https://kubernetes.io/docs/setup/pick-right-solution/#local-machine-solutions (many options to choose from) Securing K8s implementations: https://kubernetes.io/docs/tasks/administer-cluster/securing-a-cluster/ https://github.com/aquasecurity/kube-hunter - Threat Model What R U protecting? Who R U protecting from? What R your Adversary's capabilities? What R your capabilities? Defenders think in Lists Attackers think in Graphs What are some of the visible ports used in K8S? 44134/tcp - Helmtiller, weave, calico 10250/tcp - kubelet (kublet exploit) No authN, completely open 10255/tcp - kublet port (read-only) 4194/tcp - cAdvisor 2379/tcp - etcd Etcd holds all the configs Config storage Engineering workflow: Ephemeral - CVE for K8S subpath - https://kubernetes.io/blog/2018/04/04/fixing-subpath-volume-vulnerability/ Final points: Advice securing K8S is standard security advice Use Defense in Depth, and least Privilege Be aware of your attack surface Keep your threat model in mind David Cybuck (questions from Slack channel) My questions are: 1. Talk telemetry? What is the best first step for having my containers or kubernetes report information? (my overlords want metrics dashboards which lead to useful metrics). How do you threat model your containers? Has she ever or how would she begin to run a table-top exercise, a cross between a threat model and a disaster recovery walk through, for the container infrastructure? Mitre Att&ck framework, there is a spin off for mobile. Do we need one for Kube, swarm, or DC/OS?
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2018-041: part 2 of Kubernetes security insights w/ ian Coldwater
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