An insight into container security concerns with Azure Security Center

Container Security has been the biggest concern in the cloud with more and more applications moving to the cloud with exciting services and offers for clients. Azure Security Center has brought forth various security features for containers like Docker recommendations and CIS benchmark for container security compliance. In this regard, Azure Security Center benefits in detecting and mitigating security threats in real-time cloud environments. There are a two main container security concerns in container environments. Let’s have a look at them.

  • Docker Analytics

The commonly diagnosed issue of a Docker is a misconfigured daemon. In essence, only a legitimate UNIX Socket can access Docker engine and this setting makes sure that the engine is not being accessed remotely. Since, Docker also supports TCP connections because one way or another remote connection is required, many a times daemons are run without “tlsverify” flag.  This makes the Docker vulnerable to attack and hence anyone within the network can send legitimately unauthenticated API requests to the Docker engine.

Once that happens, Microsoft Threat Intelligence Center’s honeypots can scan any exposed Docker daemon and Azure Security Center can alert on such behavior.

If a container is running with unnecessary high provides, it may become compromised and hence may infect the host system as well. If any such container security issues related to privileges occur, Azure Security Center detects and alerts the admin.

  • Cluster Level Security

Many a times Kubernetes is used for a decent container orchestration since one Docker engine is not enough. This gives rise to security concerns as a result of privileges escalation.

Azure Security Center can detect various malicious actions like using a cluster without RBAC enabled. Once RBAC is used to manage permissions, the major risk of file exposure from the cluster is eliminated

However, this can still cause some attackers to penetrate and get files from the clustered environment therefore Kubernetes Dashboard is used to monitor and manage the cluster. Similarly Azure Security Center is also able to detect and alert suspicious request being sent to the dashboard container for added container security.

Azure Security Center benefits are promising for a secured cloud environment especially when it comes to container security. Nevertheless, there are more solutions for an end-to-end security approach, but Azure Security Center benefits include detection of problems that can potentially harm the system.

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