Elasticsearch without IAM authentication

This product is not supported for your selected Datadog site. ().
このページは日本語には対応しておりません。随時翻訳に取り組んでいます。
翻訳に関してご質問やご意見ございましたら、お気軽にご連絡ください。

Metadata

Id: e7530c3c-b7cf-4149-8db9-d037a0b5268e

Cloud Provider: AWS

Platform: Terraform

Severity: Medium

Category: Access Control

Learn More

Description

AWS Elasticsearch domains should enforce IAM authentication to restrict access to authorized users only. Without proper IAM policies—such as using "Principal": "*" in the aws_elasticsearch_domain_policy resource—unauthorized users could gain access to sensitive data by connecting from approved IP addresses. To mitigate this risk, the Principal field should be set to reference specific IAM principals, as shown below:

"Principal" : {
  "AWS": [
    "arn:aws:iam::123456789012:root",
    "arn:aws:iam::555555555555:root"
    ]
}

Failing to enforce IAM authentication can expose your Elasticsearch domain to unauthorized access and potential data breaches.

Compliant Code Examples

resource "aws_elasticsearch_domain" "negativee" {
  domain_name           = "tf-test"
  elasticsearch_version = "2.3"
}

resource "aws_elasticsearch_domain_policy" "main8" {
  domain_name = aws_elasticsearch_domain.negativee.domain_name

  access_policies = <<POLICIES
{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Action": "es:*",
            "Principal" : {
              "AWS": [
                "arn:aws:iam::123456789012:root",
                "arn:aws:iam::555555555555:root"
                ]
            },
            "Effect": "Allow",
            "Condition": {
                "IpAddress": {"aws:SourceIp": "127.0.0.1/32"}
            },
            "Resource": "${aws_elasticsearch_domain.negativee.arn}/*"
        }
    ]
}
POLICIES
}

Non-Compliant Code Examples

resource "aws_elasticsearch_domain" "example2" {
  domain_name           = "tf-test"
  elasticsearch_version = "2.3"
}

resource "aws_elasticsearch_domain_policy" "main2" {
  domain_name = aws_elasticsearch_domain.example2.domain_name

  access_policies = <<POLICIES
{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Action": "es:*",
            "Effect": "Allow",
            "Condition": {
                "IpAddress": {"aws:SourceIp": "127.0.0.1/32"}
            },
            "Resource": "${aws_elasticsearch_domain.example2.arn}/*"
        }
    ]
}
POLICIES
}

resource "aws_elasticsearch_domain" "example" {
  domain_name           = "tf-test"
  elasticsearch_version = "2.3"
}

resource "aws_elasticsearch_domain_policy" "main" {
  domain_name = aws_elasticsearch_domain.example.domain_name

  access_policies = <<POLICIES
{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Action": "es:*",
            "Principal": "*",
            "Effect": "Allow",
            "Condition": {
                "IpAddress": {"aws:SourceIp": "127.0.0.1/32"}
            },
            "Resource": "${aws_elasticsearch_domain.example.arn}/*"
        }
    ]
}
POLICIES
}