Kinesis not encrypted with KMS

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Metadata

Id: 862fe4bf-3eec-4767-a517-40f378886b88

Cloud Provider: AWS

Platform: Terraform

Severity: High

Category: Encryption

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Description

AWS Kinesis Streams contain potentially sensitive data that should be encrypted at rest using AWS KMS to enhance security. When Kinesis streams are not encrypted with KMS, data stored in them is vulnerable to unauthorized access if the underlying storage is compromised. To properly secure Kinesis streams, both the encryption_type must be set to KMS and a valid kms_key_id must be specified, as shown in the following example:

resource "aws_kinesis_stream" "secure_example" {
  name             = "terraform-kinesis-test"
  // ... other configurations ...
  
  encryption_type = "KMS"
  kms_key_id = "alias/aws/kinesis"
}

Compliant Code Examples

resource "aws_kinesis_stream" "negative1" {
  name             = "terraform-kinesis-test"
  shard_count      = 1
  retention_period = 48

  shard_level_metrics = [
    "IncomingBytes",
    "OutgoingBytes",
  ]

  tags = {
    Environment = "test"
  }


  encryption_type = "KMS"

  kms_key_id = "alias/aws/kinesis"
}

Non-Compliant Code Examples

resource "aws_kinesis_stream" "positive1" {
  name             = "terraform-kinesis-test"
  shard_count      = 1
  retention_period = 48

  shard_level_metrics = [
    "IncomingBytes",
    "OutgoingBytes",
  ]

  tags = {
    Environment = "test"
  }
}




resource "aws_kinesis_stream" "positive2" {
  name             = "terraform-kinesis-test"
  shard_count      = 1
  retention_period = 48

  shard_level_metrics = [
    "IncomingBytes",
    "OutgoingBytes",
  ]

  tags = {
    Environment = "test"
  }


  encryption_type = "NONE"
}





resource "aws_kinesis_stream" "positive3" {
  name             = "terraform-kinesis-test"
  shard_count      = 1
  retention_period = 48

  shard_level_metrics = [
    "IncomingBytes",
    "OutgoingBytes",
  ]

  tags = {
    Environment = "test"
  }


  encryption_type = "KMS"
}