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Scenario #226
Security
K8s v1.22, Google Cloud
Insecure Ingress Controller Exposed to the Internet
An insecure ingress controller was exposed to the internet, allowing attackers to exploit vulnerabilities in the controller.
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What Happened
An ingress controller was deployed with insufficient security hardening and exposed to the public internet, making it a target for potential exploits.
Diagnosis Steps
- 1Examined the ingress controller configuration and found that it was publicly exposed without adequate access controls.
- 2Identified that no authentication or IP whitelisting was in place to protect the ingress controller.
Root Cause
Insufficient security configurations on the ingress controller allowed it to be exposed to the internet.
Fix/Workaround
• Secured the ingress controller by implementing proper authentication and IP whitelisting.
• Ensured that only authorized users or services could access the ingress controller.Lessons Learned
Always secure ingress controllers with authentication and limit access using network policies or IP whitelisting.
How to Avoid
- 1Configure authentication for ingress controllers and restrict access to trusted IPs.
- 2Regularly audit ingress configurations to ensure they are secure.