Add a "multi_region" field that is missing in the KMS Key class

[wunzeco]

Steps to Reproduce

Description

1. What command are you running?

prowler aws --region eu-west-2 --checks-folder custom_checks --check kms_key_not_multiregional

# Note: "kms_key_not_multiregional" is a custom check that needs to check multi-region status of keys in an account

2. Cloud provider you are launching

AWS

3. Environment you have, like single account, multi-account, organizations, multi or single subscription, etc.

Single account, as well as Organizations

4. See error

When developing a custom check to check the multi-region status of keys created in an AWS account, I discovered
that the Key class
was missing a field for MultiRegion field of a KMS key metadata. The resulting error is given below:

E       AttributeError: 'Key' object has no attribute 'multi_region'

Expected behavior

A field that contains the value of KeyMetadata.MultiRegion is available in the KMS Key class

Actual Result with Screenshots or Logs

E       AttributeError: 'Key' object has no attribute 'multi_region'

How did you install Prowler?

From pip package (pip install prowler)

Environment Resource

Workstation

OS used

MacOS

Prowler version

5.2.0

Pip version

25.0

Context

When developing a custom check to check the multi-region status of keys created in an AWS account, I discovered
that the Key class
was missing a field for MultiRegion field of a KMS key metadata. The resulting error is given below:

E       AttributeError: 'Key' object has no attribute 'multi_region'

Proposed solution

• Add missing multi_region field to KMS Key class to store the value of KeyMetadata.MultiRegion that is available in the KMS DescribeKey api response

See example output here