Ensure That Separation of Duties Is Enforced While Assigning KMS Related Roles to Users

MediumLevel 2Manual reviewgcp

Description

It is recommended that the principle of 'Separation of Duties' is enforced while assigning KMS related roles to users. The built-in/predefined IAM role Cloud KMS Admin allows the user/identity to create, delete, and manage service account(s). The built-in/predefined IAM role Cloud KMS CryptoKey Encrypter/Decrypter allows the user/identity (with adequate privileges on concerned resources) to encrypt and decrypt data at rest using an encryption key(s). The built-in/predefined IAM role Cloud KMS CryptoKey Encrypter allows the user/identity (with adequate privileges on concerned resources) to encrypt data at rest using an encryption key(s). The built-in/predefined IAM role Cloud KMS CryptoKey Decrypter allows the user/identity (with adequate privileges on concerned resources) to decrypt data at rest using an encryption key(s). Separation of duties is the concept of ensuring that one indiv...

How it is checked

Audit method: Manual review

This recommendation cannot be checked automatically. A scan lists it with these instructions when you pass --include-manual.

From Google Cloud Console 1. Go to IAM & Admin/IAM by visiting: https://console.cloud.google.com/iam- admin/iam 2. Ensure no member has the roles Cloud KMS Admin and any of the Cloud KMS CryptoKey Encrypter/Decrypter, Cloud KMS CryptoKey Encrypter, Cloud KMS CryptoKey Decrypter assigned. From Google Cloud CLI 1. List all users and role assignments: gcloud projects get-iam-policy PROJECT_ID 2. Ensure that there are no common users found in the member section for roles cloudkms.admin and any one of Cloud KMS CryptoKey Encrypter/Decrypter, Cloud KMS CryptoKey Encrypter, Cloud KMS CryptoKey Decrypter

How it is fixed

Fix method: Guidance or infrastructure patch

From Google Cloud Console 1. Go to IAM & Admin/IAM using https://console.cloud.google.com/iam- admin/iam 2. For any member having Cloud KMS Admin and any of the Cloud KMS CryptoKey Encrypter/Decrypter, Cloud KMS CryptoKey Encrypter, Cloud KMS CryptoKey Decrypter roles granted/assigned, click the Delete Bin icon to remove the role from the member. Note: Removing a role should be done based on the business requirement.

Properties

Operating systems: Any
Tags: cloudgcpiam
Reference: CIS Google Cloud Platform Foundation Benchmark v5.0.0 - 1.12 Ensure That Separation of Duties Is Enforced While Assigning KMS Related Roles to Users