Pod or container without security context

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Metadata

Id: terraform-kubernetes-pod-or-container-without-security-context

Provider: Kubernetes

Platform: Terraform

Severity: Low

Category: Insecure Configurations

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Description

A security_context defines privileges and access control settings for a Pod or Container.
This rule ensures the security_context attribute is present on kubernetes_pod resources and on init_container and container entries within the pod spec.
If security_context is missing, the rule reports a MissingAttribute issue that includes the resource details and the expected versus actual values.

Compliant Code Examples


resource "kubernetes_pod" "negative4" {
  metadata {
    name = "terraform-example"
  }

  spec {
    security_context = {
        allow_privilege_escalation = false
    }

    container = [
     {
      image = "nginx:1.7.9"
      name  = "example22"

      security_context = {
        allow_privilege_escalation = false
      }

      env = {
        name  = "environment"
        value = "test"
      }

      port = {
        container_port = 8080
      }

      liveness_probe = {
        http_get = {
          path = "/nginx_status"
          port = 80

          http_header = {
            name  = "X-Custom-Header"
            value = "Awesome"
          }
        }

        initial_delay_seconds = 3
        period_seconds        = 3
      }
     }
     ,
     {
      image = "nginx:1.7.9"
      name  = "example22222"

      security_context = {
        allow_privilege_escalation = false
      }

      env = {
        name  = "environment"
        value = "test"
      }

      port = {
        container_port = 8080
      }

      liveness_probe = {
        http_get = {
          path = "/nginx_status"
          port = 80

          http_header = {
            name  = "X-Custom-Header"
            value = "Awesome"
          }
        }

        initial_delay_seconds = 3
        period_seconds        = 3
      }
     }
   ]


    dns_config {
      nameservers = ["1.1.1.1", "8.8.8.8", "9.9.9.9"]
      searches    = ["example.com"]

      option {
        name  = "ndots"
        value = 1
      }

      option {
        name = "use-vc"
      }
    }

    dns_policy = "None"
  }
}



resource "kubernetes_pod" "negative5" {
  metadata {
    name = "terraform-example"
  }

  spec {
    security_context = {
        allow_privilege_escalation = false
    }

    container {
      image = "nginx:1.7.9"
      name  = "example"

      security_context = {
        allow_privilege_escalation = false
      }

      env {
        name  = "environment"
        value = "test"
      }

      port {
        container_port = 8080
      }

      liveness_probe {
        http_get {
          path = "/nginx_status"
          port = 80

          http_header {
            name  = "X-Custom-Header"
            value = "Awesome"
          }
        }

        initial_delay_seconds = 3
        period_seconds        = 3
      }
    }


    dns_config {
      nameservers = ["1.1.1.1", "8.8.8.8", "9.9.9.9"]
      searches    = ["example.com"]

      option {
        name  = "ndots"
        value = 1
      }

      option {
        name = "use-vc"
      }
    }

    dns_policy = "None"
  }
}

Non-Compliant Code Examples

resource "kubernetes_pod" "positive1" {
  metadata {
    name = "terraform-example"
  }

  spec {
    container = [
     {
      image = "nginx:1.7.9"
      name  = "example22"

      env = {
        name  = "environment"
        value = "test"
      }

      port = {
        container_port = 8080
      }

      liveness_probe = {
        http_get = {
          path = "/nginx_status"
          port = 80

          http_header = {
            name  = "X-Custom-Header"
            value = "Awesome"
          }
        }

        initial_delay_seconds = 3
        period_seconds        = 3
      }
     }
     ,
     {
      image = "nginx:1.7.9"
      name  = "example22222"

      env = {
        name  = "environment"
        value = "test"
      }

      port = {
        container_port = 8080
      }

      liveness_probe = {
        http_get = {
          path = "/nginx_status"
          port = 80

          http_header = {
            name  = "X-Custom-Header"
            value = "Awesome"
          }
        }

        initial_delay_seconds = 3
        period_seconds        = 3
      }
     }
   ]


    dns_config {
      nameservers = ["1.1.1.1", "8.8.8.8", "9.9.9.9"]
      searches    = ["example.com"]

      option {
        name  = "ndots"
        value = 1
      }

      option {
        name = "use-vc"
      }
    }

    dns_policy = "None"
  }
}



resource "kubernetes_pod" "positive2" {
  metadata {
    name = "terraform-example"
  }

  spec {
    container {
      image = "nginx:1.7.9"
      name  = "example"

      security_context = {
        allow_privilege_escalation = false
      }

      env {
        name  = "environment"
        value = "test"
      }

      port {
        container_port = 8080
      }

      liveness_probe {
        http_get {
          path = "/nginx_status"
          port = 80

          http_header {
            name  = "X-Custom-Header"
            value = "Awesome"
          }
        }

        initial_delay_seconds = 3
        period_seconds        = 3
      }
    }


    dns_config {
      nameservers = ["1.1.1.1", "8.8.8.8", "9.9.9.9"]
      searches    = ["example.com"]

      option {
        name  = "ndots"
        value = 1
      }

      option {
        name = "use-vc"
      }
    }

    dns_policy = "None"
  }
}