A new vulnerability, CVE-2020-8557, has been detected in kubelet. It can be exploited by writing into /etc/hosts to cause a denial of service. The source of the issue is that the /etc/hosts file mounted in a pod by kubelet is not included by the kubelet eviction manager, so it’s not taken into account when calculating ephemeral storage usage by a pod.

Containers are on the rise. As reported by GlobalNewswire, Allied Market Research estimated that the application market would grow from its 2016 value of $698 million to $8.20 by 2025. With a compound annual growth rate of 31.8% between 2018 and 2025, this increase would largely reflect both the surge in popularity in application container technology along with a growing number of organizations’ migration to the cloud.

We’re excited to announce that the latest release of Calico includes encryption for data-in-transit. Calico is the open source networking and network security solution for containers, virtual machines, and host-based workloads, offering connectivity and security for container workloads. One of Calico’s best-known security features is its implementation of Kubernetes Network Policy, providing a way to secure container workloads by restricting traffic to and from trusted sources.

The Splunk Security Research Team has been working on Kubernetes security analytic stories mainly focused on AWS and GCP cloud platforms. The turn has come now for some Azure Kubernetes security monitoring analytic stories. As outlined in my "Approaching Kubernetes Security — Detecting Kubernetes Scan with Splunk" blog post, when looking at Kubernetes security, there are certain items within a cluster that must be monitored.

In this blog, we will explore suspicious file activity inside a container and see how to effectively implement a file integrity monitoring (FIM) workflow. We’ll also cover how Sysdig Secure can help you implement FIM for both containers and Linux hosts.

Tag mutability can introduce multiple functional and security issues. In container land, tags are a volatile reference to a concrete image version in a specific point in time. Tags can change unexpectedly, and at any moment. In this article, we’ll learn how we can prevent them.

It has arrived! Azure Red Hat OpenShift 4 is here and generally available; now, how do you add even more granular security and faster time to repair (MTTR) for your teams? Sysdig, that’s how!