ElastiCache without VPC

이 제품은 선택한 Datadog 사이트에서 지원되지 않습니다. ().
이 페이지는 아직 한국어로 제공되지 않습니다. 번역 작업 중입니다.
현재 번역 프로젝트에 대한 질문이나 피드백이 있으신 경우 언제든지 연락주시기 바랍니다.

Metadata

Id: terraform-aws-elasticache-without-vpc

Provider: AWS

Platform: Terraform

Severity: Low

Category: Networking and Firewall

Learn More

Description

Amazon ElastiCache clusters should be launched within a Virtual Private Cloud (VPC) to ensure that network access is restricted and controlled. When the subnet_group_name attribute is omitted, as shown below, ElastiCache is deployed outside a VPC, making it potentially accessible over the public internet and exposing sensitive cached data to unauthorized actors:

resource "aws_elasticache_cluster" "example" {
  cluster_id           = "cluster-example"
  engine               = "memcached"
  node_type            = "cache.m4.large"
  num_cache_nodes      = 2
  parameter_group_name = aws_elasticache_parameter_group.default.id
  port                 = 11211
}

This misconfiguration can lead to increased risk of data breaches and unauthorized access to cached application data.

Compliant Code Examples

resource "aws_elasticache_cluster" "negative1" {
  cluster_id           = "cluster-example"
  engine               = "memcached"
  node_type            = "cache.m4.large"
  num_cache_nodes      = 2
  parameter_group_name = aws_elasticache_parameter_group.default.id
  port                 = 11211
  subnet_group_name    = var.subnet_group_name
}

Non-Compliant Code Examples

resource "aws_elasticache_cluster" "positive1" {
  cluster_id           = "cluster-example"
  engine               = "memcached"
  node_type            = "cache.m4.large"
  num_cache_nodes      = 2
  parameter_group_name = aws_elasticache_parameter_group.default.id
  port                 = 11211
}