ECS Task Definition Network Mode Not Recommended

Query id: 9f4a9409-9c60-4671-be96-9716dbf63db1
Query name: ECS Task Definition Network Mode Not Recommended
Platform: Terraform
Severity: Medium
Category: Insecure Configurations
CWE: 665
URL: Github

Description¶

Network_Mode should be 'awsvpc' in ecs_task_definition. AWS VPCs provides the controls to facilitate a formal process for approving and testing all network connections and changes to the firewall and router configurations
Documentation

Code samples¶

Code samples with security vulnerabilities¶

Positive test num. 1 - tf file

resource "aws_ecs_task_definition" "positive1" {
  family                = "service"
  network_mode = "none"

  volume {
    name      = "service-storage"
    host_path = "/ecs/service-storage"
  }

  placement_constraints {
    type       = "memberOf"
    expression = "attribute:ecs.availability-zone in [us-west-2a, us-west-2b]"
  }
}

Code samples without security vulnerabilities¶

Negative test num. 1 - tf file

resource "aws_ecs_task_definition" "negative1" {
  family                = "service"
  network_mode = "awsvpc"

  volume {
    name      = "service-storage"
    host_path = "/ecs/service-storage"
  }

  placement_constraints {
    type       = "memberOf"
    expression = "attribute:ecs.availability-zone in [us-west-2a, us-west-2b]"
  }
}