Beta - CVM Instance Has Public IP

• Query id: a74b4602-a62c-4a02-956a-e19f86ea24b5
• Query name: Beta - CVM Instance Has Public IP
• Platform: Terraform
• Severity: High
• Category: Networking and Firewall
• CWE: 200
• URL: Github

Description

CVM Instance should not have a public IP address.
Documentation

Code samples

Code samples with security vulnerabilities

Positive test num. 1 - tf file

resource "tencentcloud_instance" "cvm_postpaid" {
  instance_name              = "cvm_postpaid"
  availability_zone          = "ap-guangzhou-7"
  image_id                   = "img-9qrfy1xt"
  instance_type              = "POSTPAID_BY_HOUR"
  system_disk_type           = "CLOUD_PREMIUM"
  system_disk_size           = 50
  hostname                   = "root"
  project_id                 = 0
  vpc_id                     = "vpc-axrsmmrv"
  subnet_id                  = "subnet-861wd75e"
  internet_max_bandwidth_out = 100
  allocate_public_ip         = true

  data_disks {
    data_disk_type = "CLOUD_PREMIUM"
    data_disk_size = 50
    encrypt        = false
  }

  tags = {
    tagKey = "tagValue"
  }
}

Code samples without security vulnerabilities

Negative test num. 1 - tf file

resource "tencentcloud_instance" "cvm_postpaid" {
  instance_name     = "cvm_postpaid"
  availability_zone = "ap-guangzhou-7"
  image_id          = "img-9qrfy1xt"
  instance_type     = "POSTPAID_BY_HOUR"
  system_disk_type  = "CLOUD_PREMIUM"
  system_disk_size  = 50
  hostname          = "root"
  project_id        = 0
  vpc_id            = "vpc-axrsmmrv"
  subnet_id         = "subnet-861wd75e"

  data_disks {
    data_disk_type = "CLOUD_PREMIUM"
    data_disk_size = 50
    encrypt        = false
  }

  tags = {
    tagKey = "tagValue"
  }
}

Negative test num. 2 - tf file

resource "tencentcloud_instance" "cvm_postpaid" {
  instance_name      = "cvm_postpaid"
  availability_zone  = "ap-guangzhou-7"
  image_id           = "img-9qrfy1xt"
  instance_type      = "POSTPAID_BY_HOUR"
  system_disk_type   = "CLOUD_PREMIUM"
  system_disk_size   = 50
  hostname           = "root"
  project_id         = 0
  vpc_id             = "vpc-axrsmmrv"
  subnet_id          = "subnet-861wd75e"
  allocate_public_ip = false

  data_disks {
    data_disk_type = "CLOUD_PREMIUM"
    data_disk_size = 50
    encrypt        = false
  }

  tags = {
    tagKey = "tagValue"
  }
}