Quick Info
| Plugin Title | EBS Encrypted Snapshots |
| Cloud | AWS |
| Category | EC2 |
| Description | Ensures EBS snapshots are encrypted at rest |
| More Info | EBS snapshots should have at-rest encryption enabled through AWS using KMS. If the volume was not encrypted and a snapshot was taken the snapshot will be unencrypted. |
| AWS Link | https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSSnapshots.html#encryption-support |
| Recommended Action | Configure volume encryption and delete unencrypted EBS snapshots. |
Detailed Remediation Steps
- Log into the AWS Management Console.
- Select the “Services” option and search for EC2.
- Scroll down the left navigation panel and choose “Snapshots”. <img src=”/resources/aws/ec2/ebs-encrypted-snapshots/step3.png)
- Select the “Snapshot” that needs to be verified and click on its name from the “Name” column.
- Scroll down the page and under “Description” check for “Encrypted”. If the “Encrypted” option is showing “Not Encrypted” then the selected the “EBS Snapshot” is not encrypted.
- Repeat the steps number 2 - 5 to check other “EBS Snapshot” in the AWS region.
- Select the unencrypted “EBS Snapshot” that needs to be encrypted and click on the “Actions” button at the top panel and click on the “Copy” option.
- In the “Copy Snapshot” dialog box select the box “Encrypt this snapshot” next to “Encryption” and choose the “Master key” from the dropdown menu.
- Click on the “Copy” button to copy the selected “EBS Snapshot”.
- Select the new EBS snapshot and click on the “Actions” button at the top panel and click on the “Create Volume” option.
- In the “Create Volume” dialog box verify the “Encryption” option is enabled.
- Click on the “Create Volume” button to create the new “EBS Encrypted Volume”.
- Scroll down the left navigation panel and click on the “Volumes”.
- Select the volume that is not encrypted and click on the “Action” button at the top and click on the “Detach Volume”.
- In the “Detach Volume” dialog box click on the “Yes,Detach” button.
- Select the newly encrypted EBS volume and click on the “Action” button at the top and click on the “Attach Volume”.
- In the “Attach Volume” dialog box select the EC2 instance and device name for the attachment.
- Repeat steps number 7 - 17 to ensure “EBS snapshots” are encrypted at rest.