HIGH
Source
Trivy
ID
AVD-AWS-0126

Elasticsearch domain endpoint is using outdated TLS policy.

You should not use outdated/insecure TLS versions for encryption. You should be using TLS v1.2+.

Impact

Follow the appropriate remediation steps below to resolve the issue.

Use the most modern TLS/SSL policies available

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Resources:
  GoodExample:
    Type: AWS::Elasticsearch::Domain
    Properties:
      DomainEndpointOptions:
        TLSSecurityPolicy: Policy-Min-TLS-1-2-2019-07
      DomainName: test
      EBSOptions:
        EBSEnabled: true
        Iops: "0"
        VolumeSize: "20"
        VolumeType: gp2
      ElasticsearchClusterConfig:
        DedicatedMasterCount: "3"
        DedicatedMasterEnabled: true
        DedicatedMasterType: m3.medium.elasticsearch
        InstanceCount: "2"
        InstanceType: m3.medium.elasticsearch
        ZoneAwarenessEnabled: true
      ElasticsearchVersion: "7.10"
      EncryptionAtRestOptions:
        Enabled: true
        KmsKeyId: alias/kmskey

Use the most modern TLS/SSL policies available

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resource "aws_elasticsearch_domain" "good_example" {
  domain_name = "domain-foo"

  domain_endpoint_options {
    enforce_https       = true
    tls_security_policy = "Policy-Min-TLS-1-2-2019-07"
  }
}