Ensure that the azure.json file has permissions set to 644 or more restrictive

MediumLevel 1Automatedaks

Description

The azure.json file in an AKS worker node contains Azure cloud provider configuration used by Kubernetes and related components to interact with Azure resources such as networking, load balancing, and storage. Because this file may contain sensitive cloud configuration details, ensure that its permissions are set to 644 or more restrictive. Runs on each AKS node; SKIPs where /etc/kubernetes/azure.json is absent.

How it is checked

Audit method: Shell command

shell

set -f
f=""; for x in /etc/kubernetes/azure.json; do if [ -e "$x" ]; then f=$x; break; fi; done
[ -n "$f" ] || exit 1
p=$(stat -Lc %a "$f") || exit 1
if [ $((0$p & 0133)) -eq 0 ]; then echo compliant; else echo "noncompliant: $f mode $p"; fi

Expected output: compliant

How it is fixed

Fix method: Shell command

shell

chmod u-x,go-wx /etc/kubernetes/azure.json

Properties

Operating systems: Any
Tags: aksworker-nodefile-permissions
Reference: CIS Azure Kubernetes Service (AKS) Benchmark v2.0.0 - 3.1.3 Ensure that the azure.json file has permissions set to 644 or more restrictive

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target aks