> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/appsec-rules/iac-security/public-exposure/appsec2-gcp-6.md).

# GCP KMS crypto key is anonymously accessible misconfiguration detected in code

## Rule Details

|                        |                                            |
| ---------------------- | ------------------------------------------ |
| Cortex AppSec Rule ID  | APPSEC2\_GCP\_6                            |
| Category - Subcategory | Public Exposure - Encryption And Protocols |
| Provider               | GCP                                        |
| Severity               | MEDIUM                                     |
| Framework              | Terraform, Terraform Plan                  |
| Mapped CSPM/KSPM Rule  | 4b718a26-51ce-47d3-bb0a-1ba56d4a528f       |

## Impact

It is recommended that the IAM policy on Cloud KMS cryptokeys should restrict anonymous and/or public access. Granting permissions to allUsers or allAuthenticatedUsers allows anyone to access the dataset. Such access might not be desirable if sensitive data is stored at the location. In this case, ensure that anonymous and/or public access to a Cloud KMS cryptokey is not allowed.

## How to Fix

*Resource:* google\_kms\_crypto\_key

* *Arguments:* google\_kms\_crypto\_key\_iam\_member / google\_kms\_crypto\_key\_iam\_binding \[source,go]

***

{ "resource "google\_kms\_key\_ring" "keyring" { name = "keyring-example" location = "global" }

resource "google\_kms\_crypto\_key" "bad\_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\_member" "bad\_member\_1" { crypto\_key\_id = google\_kms\_crypto\_key.bad\_key.id role = "roles/cloudkms.cryptoKeyEncrypter"

* member = "allUsers" }

resource "google\_kms\_crypto\_key\_iam\_member" "bad\_member\_2" { crypto\_key\_id = google\_kms\_crypto\_key.bad\_key.id role = "roles/cloudkms.cryptoKeyEncrypter"

* member = "allAuthenticatedUsers" }

resource "google\_kms\_crypto\_key\_iam\_binding" "bad\_binding\_1" { crypto\_key\_id = google\_kms\_crypto\_key.bad\_key.id role = "roles/cloudkms.cryptoKeyEncrypter"

* members = \[
* "allUsers",
* ] }

resource "google\_kms\_crypto\_key\_iam\_binding" "bad\_binding\_2" { crypto\_key\_id = google\_kms\_crypto\_key.bad\_key.id role = "roles/cloudkms.cryptoKeyEncrypter"

* members = \[
* "allAuthenticatedUsers",
* ] }

resource "google\_kms\_crypto\_key" "good\_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\_member" "good\_member" { crypto\_key\_id = google\_kms\_crypto\_key.good\_key.id role = "roles/cloudkms.cryptoKeyEncrypter"

* member = "user:<jane@example.com>" }

resource "google\_kms\_crypto\_key\_iam\_binding" "good\_binding" { crypto\_key\_id = google\_kms\_crypto\_key.good\_key.id role = "roles/cloudkms.cryptoKeyEncrypter"

* members = \[
* "user:<jane@example.com>",
* ] }

## ", }


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