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| Section | Weight | Objectives |
|---|---|---|
| Monitoring, Logging and Runtime Security | 20% | - Container immutability - Audit log configuration - Threat detection (Falco) - Behavioral analytics - Incident investigation |
| Cluster Hardening | 15% | - Service account security - Component updates & vulnerability mitigation - RBAC configuration - API access restriction |
| System Hardening | 10% | - Minimize OS attack surface - Kernel hardening (AppArmor, seccomp) - Network access control - Least privilege IAM |
| Supply Chain Security | 20% | - SBOM & CI/CD security - Permitted registries - Static analysis tools - Image security & scanning - Signed artifacts & verification |
| Minimize Microservice Vulnerabilities | 20% | - Pod Security Standards - Secret management - Isolation & multi-tenancy - Security contexts - OPA/Gatekeeper implementation |
| Cluster Setup | 15% | - Node metadata protection - CIS benchmark compliance - Secure Ingress configuration - Network security policies - Binary verification |
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NEW QUESTION # 58
You are responsible for managing the software supply chain of a critical application deployed in a Kubernetes cluster. This application utilizes a library called 'lib-crypto' for secure cryptographic operations. How can you ensure that the version of 'lib-ctypto' deployed in your Kubernetes environment is the same as the one specified in the Software Bill of Materials (SBOM) for the application?
Answer:
Explanation:
Solution (Step by Step) :
1. Obtain the SBOM: Retrieve the SBOM for your application. This document will contain a list of all the components and their versions, including 'lib- crypto'. The SBOM can be generated using various tools like 'cyclonedx-boms or 'Sbom-cli'.
2. Parse the S80M: IJse a suitable tool or script to parse the SdOM and extract the version of 'lib-crypto' from the S80M_
3. Verify in the Deployment Manifest: Inspect the deployment manifest for your application. Look for the container definition that uses the 'lib-crypto' image. Ensure that the image tag used in the deployment manifest matches the version of 'Iib-crypto' extracted from the SBOM_
4. Implement Image Scanning: Integrate an image scanning tool like 'Clair' or 'Anchores into your CI/CD pipeline. This will scan the 'Iib-crypto' image before deployment to ensure it doesn't contain any vulnerabilities or unexpected components.
5. Use a Container Registry with SBOM Support: Consider using a container registry like JFrog Xray or Snyk Container which supports storing and verifying S80Ms for each image. This provides a centralized mechanism for tracking and validating the software components in your container images.
NEW QUESTION # 59
You are working on a Kubernetes cluster with multiple teams developing and deploying applications. How would you establish a secure. supply chain process that ensures all deployed images are scanned for vulnerabilities and comply with security best practices?
Answer:
Explanation:
Solution (Step by Step) :
1. Centralized Image Registry:
- Establish a centralized image registry to act as the single source of truth for all container images.
- Use a registry like Docker Hub, Harbor, or Google Container Registry (GCR), depending on your organization's needs.
2. Image Scanning Integration:
- Integrate a container image vulnerability scanner into your CI/CD pipelines.
- Utilize tools like Aqua Security, JFrog Xray, or Anchore Engine.
- Configure the scanner to run automatically during image builds and before pushing to the registry.
3. Automated Policy Enforcement:
- Implement Kubernetes policies (like Admission Controllers) to enforce security best practices.
- Define rules that block the deployment of images with:
- Unacceptable vulnerability levels (based on CVSS score or severity)
- Missing security scans (e.g., images without a "scanned" tag)
- Unauthorized image sources (restricting deployments to images from the centralized registry)
4. Image Signing:
- Implement image signing to add an extra layer of security.
- Use a trusted key to sign images in the registry.
- Configure Kubernetes to only allow images signed with the trusted key to be deployed.
- This helps prevent tampering or unauthorized modifications to images.
5. Access Control and Role-Based Access Control (RBAC):
- Implement strong access control mechanisms to limit who has access to the image registry and the Kubernetes cluster.
- Use RBAC to grant different teams specific permissions based on their responsibilities.
- For example, developers might have access to build images and push them to the registry, while deployment teams might have access to pull
images and deploy them to the cluster.
6. Security Best Practices Training:
- Educate development teams on container security best practices, such as:
- Using minimal base images
- Avoiding unnecessary dependencies
- Employing security tools like linters and analyzers
- Following secure coding practices
- Regularly review and update policies and procedures to reflect evolving security threats and industry best practices.
7. Auditing and Monitoring:
- Implement auditing and monitoring to track all image pulls, deployments, and any potential security issues.
- Use logs, security dashboards, and monitoring tools to identify and address anomalies or security breaches.
8. Continuous Improvement:
- Establish a continuous improvement process to review and refine your secure supply chain procedures.
- Regularly assess your security posture, identity areas for improvement, and implement changes to enhance your overall security.
These steps help you establish a comprehensive secure supply chain process across your Kubernetes cluster, ensuring all deployed images are scanned tor vulnerabilities, comply with security best practices, and contribute to the overall security posture of your application.
NEW QUESTION # 60
Context: Cluster: gvisor Master node: master1 Worker node: worker1
You can switch the cluster/configuration context using the following command:
[desk@cli] $ kubectl config use-context gvisor
Context: This cluster has been prepared to support runtime handler, runsc as well as traditional one.
Task: Create a RuntimeClass named not-trusted using the prepared runtime handler names runsc. Update all Pods in the namespace server to run on newruntime.
Answer:
Explanation:
Explanation
[desk@cli] $vim runtime.yaml
apiVersion: node.k8s.io/v1
kind: RuntimeClass
metadata:
name: not-trusted
handler: runsc
[desk@cli] $ k apply -f runtime.yaml [desk@cli] $ k get pods
NAME READY STATUS RESTARTS AGE
nginx-6798fc88e8-chp6r 1/1 Running 0 11m
nginx-6798fc88e8-fs53n 1/1 Running 0 11m
nginx-6798fc88e8-ndved 1/1 Running 0 11m
[desk@cli] $ k get deploy
NAME READY UP-TO-DATE AVAILABLE AGE
nginx 3/3 11 3 5m
[desk@cli] $ k edit deploy nginx
NEW QUESTION # 61
You're working with a Kubernetes cluster where you need to enforce a secure supply chain. You have a Kubernetes deployment that utilizes a container image from a specific registry. How would you configure your Kubernetes cluster to only allow images from this registry to be used in deployments?
Answer:
Explanation:
Solution (Step by Step) :
1. Create a PodSecurityPolicy (PSP):
- A PSP is a policy that enforces security restrictions on pods. We will use it to restrict image pulls to a specific registry.
- create a PSP YAML file.
2. Define Allowed Registries: - Within the 'spec' of your PSP, create a field 'seLinux' and then define the allowed registries within the 'seLinux' field. - Example:
3. Apply the PSP: - Apply the PSP to your cluster using kubectl apply -f restricted-registry-psp.yaml' 4. Create a Service Account: - Create a service account that will be allowed to run pods with this PSP:
5. Bind the PSP to the Service Account: - Add the 'securityContext' field to your deployment and specify the PSP you just created:
- Apply the deployment: bash kubectl apply -f deploymentyaml - Now, the deployment will only be able to pull images from the specified registry-
NEW QUESTION # 62
Create a RuntimeClass named untrusted using the prepared runtime handler named runsc.
Create a Pods of image alpine:3.13.2 in the Namespace default to run on the gVisor runtime class.
Answer:
Explanation:
Verify: Exec the pods and run the dmesg, you will see output like this:-
NEW QUESTION # 63
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