istio-security-analyzer's Introduction

Istio Security Analyzer

This is a tool to analyze Istio security. Roughly the tool covers two aspects

Ensure configuration adhering to Istio Security Best Practice.
Checks the running Istio version to see if has any known CVE issues.

Get Started

Install Istio

Install Istio 1.12.1. We choose this specific version so that we can demo how CVE detection works.

curl -L https://git.io/getLatestIstio | ISTIO_VERSION=1.12.1 sh
pushd istio-1.12.1
./bin/istioctl install --set profile=demo -y

Apply some sample configuration. To illustrate, we provide some sample problematic configuration.

kubectl apply -f ./pkg/parser/testdata/

Check Basics

Now let's just run the tool without any configuration.

scanner

You will see some report as below. In this report, we identified a few issues.

Reminds you that you can harden your Istio deployment via using hardened distroless image.
Reports security vunerabilities found for Istio 1.12.1. For example, Istio-security-2022-004 means unauthenticated request to Istiod control plane can make Istiod crash by exhausting its memory.
Config Warnings section reminds you that the cluster does not have k8s RBAC to control who can create Istio gateway resource.

==========================================
    Istio Security Scanning Report

Control Plane Version
- 1.12.1

Distroless Warning
- pod istio-egressgateway-687f4db598-rn5hs can use a distroless image for better security, current docker.io/istio/proxyv2:1.12.1

CVE Report
- ISTIO-SECURITY-2022-004
- ISTIO-SECURITY-2022-003
- ISTIO-SECURITY-2022-001
- ISTIO-SECURITY-2022-002

Config Warnings
- failed to find cluster role and role bindings to control istio gateway creation