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An organization has deployed a web application on Azure using Kubernetes.

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An organization has deployed a web application on Azure using Kubernetes. A scan reveals outdated vulnerable containers. Patching requires downtime. What is the most appropriate immediate course of action?

Choose one option.
Show answer & explanation
Answer: A. Implement a Web Application Firewall (WAF) rule to block known exploits temporarily

Virtual patching via WAF rules blocks malicious request signatures targeting the vulnerability while application patching is scheduled.

Step-by-step Derivation:
Step 1: Immediate patching requires downtime which is unacceptable during production hours.
Step 2: A WAF rule inspects incoming HTTP traffic and filters out known exploit payloads, providing compensating control.