Severity Framework
Snyk CCSS
Rule category
IAM / Public Access
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- Snyk ID SNYK-CC-00351
- credit Snyk Research Team
Description
IAM policy on Cloud KMS (Key Management Service) cryptokeys should restrict anonymous and/or public access. Granting permissions to allUsers or allAuthenticatedUsers allows anyone to access the dataset, which is not desirable if sensitive data is stored at the location.
How to fix?
Remove allUsers and allAuthenticatedUsers from members attribute.
Example Configuration
resource "google_kms_crypto_key" "key" {
name = "crypto-key-example"
key_ring = google_kms_key_ring.keyring.id
rotation_period = "100000s"
lifecycle {
prevent_destroy = true
}
}
resource "google_kms_crypto_key_iam_binding" "allowed" {
crypto_key_id = google_kms_crypto_key.key.id
role = "roles/cloudkms.cryptoKeyEncrypter"
members = [
"user:jane@example.com",
]
}