terraform.lang.security.s3-unencrypted-bucket.s3-unencrypted-bucket

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This rule has been deprecated, as all s3 buckets are encrypted by default with no way to disable it. See https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/s3_bucket_server_side_encryption_configuration for more info.

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Defintion

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rules:
  - id: s3-unencrypted-bucket
    patterns:
      - pattern: a
      - pattern: b
    languages:
      - hcl
    severity: INFO
    message: This rule has been deprecated, as all s3 buckets are encrypted by
      default with no way to disable it. See
      https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/s3_bucket_server_side_encryption_configuration
      for more info.
    metadata:
      references:
        - https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/s3_bucket#server_side_encryption_configuration
        - https://docs.aws.amazon.com/AmazonS3/latest/userguide/bucket-encryption.html
      cwe:
        - "CWE-311: Missing Encryption of Sensitive Data"
      category: security
      technology:
        - terraform
        - aws
      owasp:
        - A03:2017 - Sensitive Data Exposure
        - A04:2021 - Insecure Design
      subcategory:
        - vuln
      likelihood: MEDIUM
      impact: MEDIUM
      confidence: MEDIUM
      deprecated: true
      license: Commons Clause License Condition v1.0[LGPL-2.1-only]
      vulnerability_class:
        - Cryptographic Issues

Examples

s3-unencrypted-bucket.tf

resource "aws_s3_bucket" "unencrypted" {
  # ok: s3-unencrypted-bucket
  bucket = "my-unencrypted-bucket"
  acl    = "private"
}

# ok: s3-unencrypted-bucket
resource "aws_s3_bucket" "bucket" {
  bucket = "my-encrypted-bucket"
  acl    = "private"

  server_side_encryption_configuration {
    rule {
      apply_server_side_encryption_by_default {
        sse_algorithm = "AES256"
      }
    }
  }
}