rage.fail

aws-kms-can-administer-via-putkeypolicy

explicit aws emits CanAdminister

match (effective permission)

{ "action": "kms:PutKeyPolicy", "resource_type": "AWS::KMS::Key" }

where

DescribeKey.KeyManager == CUSTOMER (AWS-managed keys have immutable policies)

emit

source type	`Identity`
target type	`*`
source	`<principal>`
target	`<key node>`
permissions	`kms:PutKeyPolicy`

Narrative

{principal.name} can rewrite the key policy of {key.name} (kms:PutKeyPolicy) - self-grant Decrypt/Sign.

Raw rule rules/explicit/aws-kms.yaml

id: aws-kms-can-administer-via-putkeypolicy
emits: CanAdminister
applies_to:
- aws
match_effective_permission:
  action: kms:PutKeyPolicy
  resource_type: AWS::KMS::Key
where:
- DescribeKey.KeyManager == CUSTOMER (AWS-managed keys have immutable policies)
emit:
  source_type: Identity
  target_type: '*'
  source: <principal>
  target: <key node>
  permissions:
  - kms:PutKeyPolicy
  narrative: "{principal.name} can rewrite the key policy of {key.name} (kms:PutKeyPolicy) \u2014 self-grant\
    \ Decrypt/Sign."