KCSA Kubernetes Threat Model Practice Question
An attacker manages to compromise a low-privilege pod inside a Kubernetes cluster and attempts to escalate privileges or pivot to other cluster components. Which THREE of the following misconfigurations or weaknesses would significantly aid the attacker's lateral movement or privilege escalation? (Choose THREE)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The pod's ServiceAccount has a ClusterRoleBinding granting cluster-admin permissions.
Attackers exploit weak RBAC rules, insecure access to the API server or cloud metadata, and overly permissive host namespaces to move laterally or escape.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Etcd is encrypted at rest using a customer-managed KMS encryption provider.
Why it's wrong here
Encryption at rest protects stored data in etcd and does not aid lateral movement.
- ✗
The cluster uses a properly configured PodSecurityStandard of Restricted across all namespaces.
Why it's wrong here
The Restricted policy prevents risky configurations, making escalation harder rather than easier.
- ✓
The pod's ServiceAccount has a ClusterRoleBinding granting cluster-admin permissions.
Why this is correct
Correct. Overly permissive RBAC allows the compromised token to control the entire cluster.
- ✓
The pod is configured with hostNetwork: true, allowing it to sniff traffic on the node's network interface.
Why this is correct
Correct. Sharing the host network namespace exposes node-level services and local network traffic.
- ✓
The cloud provider's instance metadata service is accessible without IMDSv2 token restrictions from the pod network.
Why this is correct
Correct. Access to the node's metadata service allows attackers to steal cloud IAM credentials.
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
About these practice questions
Courseiva writes every KCSA question from scratch — 320 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official CNCF / Linux Foundation exam blueprint
This KCSA practice question is part of Courseiva's free CNCF / Linux Foundation certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the KCSA exam.