Pod security policy disabled

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Metadata

Id: 9192e0f9-eca5-4056-9282-ae2a736a4088

Cloud Provider: gcp

Framework: Terraform

Severity: Medium

Category: Insecure Configurations

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Description

Kubernetes clusters managed by Terraform should have the Pod Security Policy (PSP) controller enabled by setting the pod_security_policy_config { enabled = true } attribute in the google_container_cluster resource. Enabling PSP helps enforce fine-grained security controls over pod behavior, reducing the risk of privilege escalation or unauthorized access within your cluster. If left unconfigured or disabled, as in pod_security_policy_config { enabled = false }, workloads in the cluster may bypass key security restrictions, increasing the potential attack surface.

A secure configuration looks like:

resource "google_container_cluster" "example" {
  // cluster configuration
  pod_security_policy_config {
    enabled = true
  }
}

Compliant Code Examples

#this code is a correct code for which the query should not find any result
resource "google_container_cluster" "negative1" {
  name               = "marcellus-wallace"
  location           = "us-central1-a"
  initial_node_count = 3
  pod_security_policy_config {
        enabled = "true"
  }

  timeouts {
    create = "30m"
    update = "40m"
  }
}

Non-Compliant Code Examples

#this is a problematic code where the query should report a result(s)
resource "google_container_cluster" "positive1" {
  name               = "marcellus-wallace"
  location           = "us-central1-a"
  initial_node_count = 3

  timeouts {
    create = "30m"
    update = "40m"
  }
}

resource "google_container_cluster" "positive2" {
  name               = "marcellus-wallace"
  location           = "us-central1-a"
  initial_node_count = 3
  pod_security_policy_config {
        enabled = false
  }

  timeouts {
    create = "30m"
    update = "40m"
  }
}