Batch job definition with privileged container properties

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Metadata

Id: terraform-aws-batch-job-definition-with-privileged-container-properties

Provider: AWS

Platform: Terraform

Severity: High

Category: Insecure Configurations

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Description

AWS Batch Job Definitions with privileged container properties grant elevated permissions to the container, essentially providing it with root-level access to the host machine. This configuration creates a significant security risk as containers can access host resources and potentially escape container isolation, leading to unauthorized access or system compromise. Instead, containers should run with minimum required privileges according to the principle of least privilege. To secure your configuration, either explicitly set the privileged property to false or omit it entirely, as shown below:

container_properties = <<CONTAINER_PROPERTIES
{
    "command": ["ls", "-la"],
    "image": "busybox",
    "memory": 1024,
    "vcpus": 1,
    "privileged": false,
    // ... other properties
}
CONTAINER_PROPERTIES

Compliant Code Examples

resource "aws_batch_job_definition" "negative1" {
  name = "tf_test_batch_job_definition"
  type = "container"

  container_properties = <<CONTAINER_PROPERTIES
{
    "command": ["ls", "-la"],
    "image": "busybox",
    "memory": 1024,
    "vcpus": 1,
    "privileged": false,
    "volumes": [
      {
        "host": {
          "sourcePath": "/tmp"
        },
        "name": "tmp"
      }
    ],
    "environment": [
        {"name": "VARNAME", "value": "VARVAL"}
    ],
    "mountPoints": [
        {
          "sourceVolume": "tmp",
          "containerPath": "/tmp",
          "readOnly": false
        }
    ],
    "ulimits": [
      {
        "hardLimit": 1024,
        "name": "nofile",
        "softLimit": 1024
      }
    ]
}
CONTAINER_PROPERTIES
}

resource "aws_batch_job_definition" "negative2" {
  name = "tf_test_batch_job_definition2"
  type = "container"

  container_properties = <<CONTAINER_PROPERTIES
{
    "command": ["ls", "-la"],
    "image": "busybox",
    "memory": 1024,
    "vcpus": 1,
    "volumes": [
      {
        "host": {
          "sourcePath": "/tmp"
        },
        "name": "tmp"
      }
    ],
    "environment": [
        {"name": "VARNAME", "value": "VARVAL"}
    ],
    "mountPoints": [
        {
          "sourceVolume": "tmp",
          "containerPath": "/tmp",
          "readOnly": false
        }
    ],
    "ulimits": [
      {
        "hardLimit": 1024,
        "name": "nofile",
        "softLimit": 1024
      }
    ]
}
CONTAINER_PROPERTIES
}

Non-Compliant Code Examples

resource "aws_batch_job_definition" "positive1" {
  name = "tf_test_batch_job_definition"
  type = "container"

  container_properties = <<CONTAINER_PROPERTIES
{
    "command": ["ls", "-la"],
    "image": "busybox",
    "memory": 1024,
    "vcpus": 1,
    "privileged": true,
    "volumes": [
      {
        "host": {
          "sourcePath": "/tmp"
        },
        "name": "tmp"
      }
    ],
    "environment": [
        {"name": "VARNAME", "value": "VARVAL"}
    ],
    "mountPoints": [
        {
          "sourceVolume": "tmp",
          "containerPath": "/tmp",
          "readOnly": false
        }
    ],
    "ulimits": [
      {
        "hardLimit": 1024,
        "name": "nofile",
        "softLimit": 1024
      }
    ]
}
CONTAINER_PROPERTIES
}