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End-to-End Encryption Setup for AWS CloudTrail: SOC2 Compliance

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This runbook provides a detailed guide for verifying and/or setting up end-to-end encryption in AWS CloudTrail for SOC2 compliance. It covers configuring CloudTrail with AWS KMS Customer Master Keys (CMKs) for Server-Side Encryption (SSE), including steps for creating or selecting KMS CMKs and ensuring secure encryption of CloudTrail trails.

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    Verify Whether AWS CloudTrail is configured to use SSE AWS KMS

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    This task verifies if AWS CloudTrail is configured with Server-Side Encryption (SSE) using AWS Key Management Service (KMS) Customer Master Keys (CMKs). It ensures that each CloudTrail trail has a KmsKeyId defined, confirming encryption according to SOC2 standards. This process enhances security and meets regulatory requirements for encrypted AWS activity logging.

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      Choose or Create an AWS KMS CMK

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      This task selects an existing AWS KMS Customer Master Key (CMK) or creates a new one if none exists. It checks for a CMK with a specific alias, creating a new key for encryption purposes as needed. This ensures enhanced security and compliance in AWS environments.

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      Update the AWS KMS Key Policy to Allow CloudTrail to use the key

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      This task updates the AWS KMS key policy to authorize AWS CloudTrail to encrypt log files using the specified KMS key. The objective is to secure CloudTrail logs with KMS encryption, ensuring enhanced security and compliance. The process involves modifying the KMS key policy to include permissions for CloudTrail operations.

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      Update AWS CloudTrail Trail with AWS KMS CMK

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      This task updates an AWS CloudTrail trail to use an AWS Key Management Service (KMS) Customer Master Key (CMK) for server-side encryption. It ensures that the trail's logs are encrypted with a specified KMS key, enhancing the security and confidentiality of audit log files. This update is vital for maintaining compliance and robust data protection standards in AWS.

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