DNS Spoofing on Kubernetes Clusters

Aqua Cloud Native Blog \ Tags: Kubernetes Security

SECURITY RESEARCH

DNS Spoofing on Kubernetes Clusters

In this post I’ll describe how an attacker, who manages to run malicious code on a cluster can, with no special permissive permissions, successfully spoof DNS responses to all the applications running on the cluster, and from there execute a MITM (Man In The Middle) on all network traffic of pods.

SECURITY RESEARCH

Kubernetes Pod Escape Using Log Mounts

Kubernetes has many moving parts, and sometimes combining them in certain ways can create unexpected security flaws. In this post you’ll see how a pod running as root and with a mount point to the node’s /var/log directory can expose the entire contents of its host filesystem to any user who has access to its …

Securing Hybrid Cloud Workloads on Google Anthos

There are major shifts happening around container technology. We have seen ongoing improvements in automation tooling and changes as fully containerized workloads move into production. Companies are often running more than one production Kubernetes cluster at a time. DevOps and operations teams, subsequently, have an additional burden because they must control and manage these clusters, …

SECURITY RESEARCH

CVE-2019-11246: Another kubectl Path Traversal Vulnerability Disclosed

A new vulnerability (CVE-2019-11246) was disclosed that enables path traversal in kubectl, the popular command line interface for running commands on Kubernetes clusters. What’s interesting about this CVE is that we’ve already seen two previous variations of the same vulnerability disclosed and patched. Read on to learn how that happened.

KUBERNETES SECURITY

Kubernetes RBAC: Asking for Forgiveness or Getting Permission

This blog is dedicated to my Mum. She was a leading psychiatrist who loved learning and traveling. She was a huge inspiration to me. I think she would be proud that I’m pursuing my passion of traveling around the world teaching what I love. I want to start with a quote attributed to another inspiring …

KUBERNETES SECURITY

Aqua Operator: Automating Security for Kubernetes

Aqua recently developed a Kubernetes Operator that was successfully tested and validated by Red Hat standards for integration and supportability. Before we tell you about our new OpenShift-certified Operator, let’s get some context about what an Operator is.

SERVERLESS SECURITY

Knative: The Serverless Environment for Kubernetes Fans

Knative is the newest member of serverless environments that is gaining significant interest and generating a great deal of hype in the Kubernetes/Cloud Native community. It’s an open source framework that was designed to enable the development and deployment of container-based serverless applications that are easy to transport between cloud providers.

Security Configuration Benchmarks for Kubernetes

When you’re running Kubernetes, how do you know whether it’s configured securely? Kubernetes is a complex system, with several control plane components, each of which has numerous configuration parameters. In some cases, it’s clear that a parameter will have an impact on Kubernetes security – for example, providing keys and certificates for setting up secure …

KUBERNETES SECURITY

Istio: Canary Deployments, Dynamic Routing & Tracing

In this series of blog posts we had an introduction to Istio, and an overview of its security features. This post completes the series with a look at how we can leverage Istio’s traffic control features to provide increased observability and control over the operation and deployment of our applications.

KUBERNETES SECURITY

Istio Security: Zero-Trust Networking

This is the second in our series of blog posts on Istio, and will focus on Istio’s security features: what they are, how they work and how they help protect your workloads and your data. Building, deploying and maintaining secure, cloud native software requires multiple overlapping solutions at different stages of the software development lifecycle. …

KUBERNETES SECURITY

Severe Privilege Escalation Vulnerability in Kubernetes (CVE-2018-1002105)

Earlier this week, a severe vulnerability in Kubernetes (CVE-2018-1002105) was disclosed that allows an unauthenticated user to perform privilege escalation and gain full admin privileges on a cluster. The CVE was given the high severity score of 9.8 (out of 10) and it affects all Kubernetes versions from 1.0 onwards, but fixes are available for recent versions.

KUBERNETES SECURITY

Security for Pivotal PAS and PKS

After we made the Aqua Security Scanner for PCF announcement last spring, we started the process of supporting Pivotal Container Service (PKS). Many Pivotal Cloud Foundry PAS customers have tested PKS and many are in production. Having been on the security infrastructure side of life for a couple decades, this doesn’t surprise me at all because …

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Aqua Security is the pioneer in securing containerized cloud native applications from development to production. Aqua's full lifecycle solution prevents attacks by enforcing pre-deployment hygiene and mitigates attacks in real time in production, reducing mean time to repair and overall business risk. The Aqua Platform, a Cloud Native Application Protection Platform (CNAPP), integrates security from Code to Cloud, combining the power of agent and agentless technology into a single solution. With enterprise scale that doesn’t slow development pipelines, Aqua secures your future in the cloud. Founded in 2015, Aqua is headquartered in Boston, MA and Ramat Gan, IL protecting over 500 of the world’s largest enterprises.

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