What should the security team do to launch the EC2 instance successfully?
Update the policy that is associated with the federated IAM role to allow the ec2:DescribeImages action for the forensic AML.
Update the policy that is associated with the federated IAM role to allow the ec2:StartInstances action in the security team’s AWS account.
Update the policy that is associated with the KMS key that is used to encrypt the forensic AMI. Configure the policy to allow the kms:Encrypt and kms:Decrypt actions for the federated IAM role.
Update the policy that is associated with the federated IAM role to allow the kms:DescribeKey action for the KMS key that is used to encrypt the forensic AMI.
Explanations:
The ec2action is used to describe AMIs, but it is not the cause of the failure. The problem lies with the KMS permissions to access the encrypted AMI.
The ec2action is related to starting EC2 instances, but the issue is not related to starting the instance. The failure is due to KMS encryption.
The KMS key used to encrypt the forensic AMI must allow the kmsand kmsactions for the federated IAM role to successfully launch the EC2 instance.
The kmsaction is used to describe the KMS key, but it does not resolve the issue of actually using the key for encryption/decryption during EC2 instance launch.
I believe the answer is:
Update the policy that is associated with the KMS key that is used to encrypt the forensic AMI. Configure the policy to allow the kms:Encrypt and kms:Decrypt actions for the federated IAM role.