Beta - CDB Instance Internet Using Default Intranet Port

• Query id: 18d6aa4b-7570-4d95-9c75-90363ef1abd9
• Query name: Beta - CDB Instance Internet Using Default Intranet Port
• Platform: Terraform
• Severity: Low
• Category: Insecure Configurations
• CWE: 668
• URL: Github

Description

CDB Instance Internet should not use have default intranet port
Documentation

Code samples

Code samples with security vulnerabilities

Positive test num. 1 - tf file

data "tencentcloud_availability_zones_by_product" "zones" {
  product = "cdb"
}

resource "tencentcloud_vpc" "vpc" {
  name       = "vpc-mysql"
  cidr_block = "10.0.0.0/16"
}

resource "tencentcloud_subnet" "subnet" {
  availability_zone = data.tencentcloud_availability_zones_by_product.zones.zones.0.name
  name              = "subnet-mysql"
  vpc_id            = tencentcloud_vpc.vpc.id
  cidr_block        = "10.0.0.0/16"
  is_multicast      = false
}

resource "tencentcloud_security_group" "security_group" {
  name        = "sg-mysql"
  description = "mysql test"
}

resource "tencentcloud_mysql_instance" "example" {
  engine_version    = "5.7"
  charge_type       = "POSTPAID"
  slave_deploy_mode = 0
  availability_zone = data.tencentcloud_availability_zones_by_product.zones.zones.0.name
  slave_sync_mode   = 1
  instance_name     = "tf-example-mysql"
  mem_size          = 4000
  volume_size       = 200
  vpc_id            = tencentcloud_vpc.vpc.id
  subnet_id         = tencentcloud_subnet.subnet.id
  intranet_port     = 3306
  security_groups   = [tencentcloud_security_group.security_group.id]

  tags = {
    name = "test"
  }

  parameters = {
    character_set_server = "utf8"
    max_connections      = "1000"
  }
}

Positive test num. 2 - tf file

data "tencentcloud_availability_zones_by_product" "zones" {
  product = "cdb"
}

resource "tencentcloud_vpc" "vpc" {
  name       = "vpc-mysql"
  cidr_block = "10.0.0.0/16"
}

resource "tencentcloud_subnet" "subnet" {
  availability_zone = data.tencentcloud_availability_zones_by_product.zones.zones.0.name
  name              = "subnet-mysql"
  vpc_id            = tencentcloud_vpc.vpc.id
  cidr_block        = "10.0.0.0/16"
  is_multicast      = false
}

resource "tencentcloud_security_group" "security_group" {
  name        = "sg-mysql"
  description = "mysql test"
}

resource "tencentcloud_mysql_instance" "example" {
  engine_version    = "5.7"
  charge_type       = "POSTPAID"
  slave_deploy_mode = 0
  availability_zone = data.tencentcloud_availability_zones_by_product.zones.zones.0.name
  slave_sync_mode   = 1
  instance_name     = "tf-example-mysql"
  mem_size          = 4000
  volume_size       = 200
  vpc_id            = tencentcloud_vpc.vpc.id
  subnet_id         = tencentcloud_subnet.subnet.id
  security_groups   = [tencentcloud_security_group.security_group.id]

  tags = {
    name = "test"
  }

  parameters = {
    character_set_server = "utf8"
    max_connections      = "1000"
  }
}

Code samples without security vulnerabilities

Negative test num. 1 - tf file

data "tencentcloud_availability_zones_by_product" "zones" {
  product = "cdb"
}

resource "tencentcloud_vpc" "vpc" {
  name       = "vpc-mysql"
  cidr_block = "10.0.0.0/16"
}

resource "tencentcloud_subnet" "subnet" {
  availability_zone = data.tencentcloud_availability_zones_by_product.zones.zones.0.name
  name              = "subnet-mysql"
  vpc_id            = tencentcloud_vpc.vpc.id
  cidr_block        = "10.0.0.0/16"
  is_multicast      = false
}

resource "tencentcloud_security_group" "security_group" {
  name        = "sg-mysql"
  description = "mysql test"
}

resource "tencentcloud_mysql_instance" "example" {
  engine_version    = "5.7"
  charge_type       = "POSTPAID"
  slave_deploy_mode = 0
  availability_zone = data.tencentcloud_availability_zones_by_product.zones.zones.0.name
  slave_sync_mode   = 1
  instance_name     = "tf-example-mysql"
  mem_size          = 4000
  volume_size       = 200
  vpc_id            = tencentcloud_vpc.vpc.id
  subnet_id         = tencentcloud_subnet.subnet.id
  intranet_port     = 3307
  security_groups   = [tencentcloud_security_group.security_group.id]

  tags = {
    name = "test"
  }

  parameters = {
    character_set_server = "utf8"
    max_connections      = "1000"
  }
}