GCP Kubernetes Engine Clusters have binary authorization disabled

Description

Binary Authorization helps to protect supply-chain security by only allowing images with verifiable cryptographically signed metadata into the cluster. Binary Authorization provides software supply-chain security for images that you deploy to GKE from Google Container Registry (GCR) or another container image registry. Binary Authorization requires images to be signed by trusted authorities during the development process. These signatures are then validated at deployment time. By enforcing validation, you can gain tighter control over your container environment by ensuring only verified images are integrated into the build-and-release process.

Code Example

{
 "resource "google_container_cluster" "success" {
  name               = var.name
  location           = var.location
  initial_node_count = 1
  project            = data.google_project.project.name
+ enable_binary_authorization = true
",
}

Remediation

Terraform

• Resource: google_container_cluster
• Arguments: enable_binary_authorization

Rule Details

Field	Value
ID	IAC-0925
Severity	LOW
IaC Type	Terraform
Frameworks	Terraform, TerraformPlan
Checkov ID	CKV_GCP_66

References

• Checkov Rule

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