Kubesploit

The article explains how attackers can exploit Kubernetes clusters by leveraging pod vulnerabilities to gain filesystem access, execute shell commands, escape containers, and exfiltrate tokens for potential cluster-admin escalation.

More: https://ku.bz/L4Pl5-zHl

This week on Learn Kubernetes Weekly 141:

💣 Kubernetes failure stories
👩‍🏫 YAML templating was a mistake
✍️ Defining and Implementing Effective SLOs and SLIs for ArgoCD
📈 Scaling to the future: Kubernetes reimagined with Graviton processors
🔎 Tracing Strategies For LLMs Running On Google Cloud Run

Read it now: https://learnkube.com/issues/141

⭐️ This newsletter is brought to you by Dynatrace - Transform complexity into your greatest asset AI-powered observability https://ku.bz/4KNlNJYz9

Ory Kratos is the developer-friendly, security-hardened and battle-tested Identity, User Management and Authentication system for the Cloud.

It is designed to run best on a Container Orchestration system such as Kubernetes.

More: https://ku.bz/PdzGBDwjh

Kubernetes v1.33 introduces default user namespaces, enabling developers to enhance container security by isolating container user IDs from host systems with a simple opt-in, preventing privilege escalation and potential breakout attacks.

More: https://ku.bz/VcF4QPnv_

helmper is a Go program that reads Helm Charts from remote OCI registries and pushes the charts container images to your registries with optional OS-level vulnerability patching.

More: https://ku.bz/K9cKPh4gl

This is a library of policies based on Kubescape controls ready for use with Kubernetes Validating Admission Policies.

More: https://ku.bz/4fkMXZ3R4

Harsha Koushik, a Security Researcher and Technical Product Manager at Palo Alto Networks, discusses the role of the shell in system interaction and security.

He explains that while the shell is a user-friendly interface for interacting with a system, it functions as an abstraction layer, making system calls similar to those made by application libraries.

From a security perspective, he highlights that removing the shell does not inherently protect against attacks, as the same system calls can be executed through different libraries.

Watch the full episode: https://ku.bz/n_sJ04xMY

Sealed Secrets provides declarative Kubernetes Secret Management in a secure way.

Since the Sealed Secrets are encrypted, they can be safely stored in a code repository.

More: https://ku.bz/17NJS0d9k

This week on Learn Kubernetes Weekly 140:

📕 The Kubernetes networking guide
♻️ Our Journey to GitOps: Migrating to ArgoCD with Zero Downtime
👍 Yoke is really cool
🆙 Automating Tooling Upgrades with Updatecli: A Scalable Solution for Platform Teams
🎳 Lessons from a Rollback Gameday

Read it now: https://learnkube.com/issues/140

⭐️ This issue is brought to you by StormForge — automate Kubernetes rightsizing with machine learning. Smarter limits, less waste, better performance https://ku.bz/WD-YdhrL0

The article demonstrates how to disable anonymous Kubernetes API server authentication globally using a new AuthenticationConfiguration object while preserving health check endpoints.

More: https://ku.bz/1RmMnj0X2

This tutorial shows how to configure External Secrets Operator in EKS, AKS, GKE, and self-managed clusters using OIDC-based identity federation.

More: https://ku.bz/KHdPyTTRS

Andy Suderman, CTO at Fairwinds, discusses three key areas he's tracking in the Kubernetes ecosystem.

He explains how mutating admission policy builds on the newly stable validating admission policy to provide native policy validation and mutation capabilities. Andy highlights dynamic resource allocation as a long-awaited feature that will transform cluster scheduling. He also covers emerging AI-focused Kubernetes tools, including Solo's recently open-sourced K-Gateway and K-Agent projects, plus Ray's machine learning capabilities.

Watch the full interview: https://ku.bz/ZQTRkMpz5

Secrets Webhook is a tool that enables direct secret injection into Kubernetes Pods through a mutating webhook.

More: https://ku.bz/m4VHrfhL5

Gatekeeper's k8sallowedrepos can be bypassed if repo entries lack a trailing /.

Attackers exploit prefix matching to pull images from fake subdomains like myrepo.io.attacker.com. Aqua shows real examples, a fixed v2 policy, and Trivy detection.

More: https://ku.bz/fYQfsmHt-

Yakir Kadkoda and Assaf Morag from Aqua Security highlight how even sectors known for their security, such as finance and insurance, are facing the challenge of leaked secrets.

They presented an example that involved contractors and engineers accidentally exposing sensitive information, like registry secrets or Docker Hub credentials, on platforms like GitHub (often using their personal accounts).

Watch the full episode: https://ku.bz/5RKVBGlQR

k8s-aws-iam-controller automates trust policy management for IAM Roles used in IRSA setups.

It watches annotated ServiceAccounts, validates via RoleUsagePolicy, and updates the role trust statements.

More: https://ku.bz/tHgMnBf1s

This week on Learn Kubernetes Weekly 139:

🍯 Securing Kubernetes using honeypots to detect and prevent lateral movement attacks
💻 Goodbye Wasted Compute: How I Taught Kubernetes to Autoscale with My MacBook Screen Lock
💣 Our last Kubernetes ingress production incident — explained in 5 minutes
🙈 Stop Treating YAML Like a String
✅ Mastering complex workloads with Kubernetes JobSet and GKE metrics

Read it now: https://learnkube.com/issues/139

⭐️ This issue is brought to you by Densify — Slash costs, improve reliability and spend less time managing Kubernetes https://ku.bz/-Ml6l6kDy

Learn how Beelzebub runs honeypots inside your Kubernetes cluster to detect lateral movement.

It fakes real services, captures attacker commands like docker ps or ls, and logs them for analysis via Grafana or fluentd.

More: https://ku.bz/W4M7dx2xy

Nova scans your cluster for installed Helm charts, cross-checks them with public repos and flags outdated or deprecated charts and container images.

More: https://ku.bz/fNvPKdrLm

Tim Miller CEO and Co-founder at Kusari explains how GitOps and Flux improve security through automated workflows.

He emphasizes that reducing human intervention in deployment processes leads to more reliable and secure outcomes. While tools like Flux require an upfront investment in automation, they make deployments repeatable and eliminate the need to teach new team members "every single weird thing" in the deployment process.

Watch the full interview: https://ku.bz/-2Sqn9Jb9