S3 bucket without versioning

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Metadata

Id: 568a4d22-3517-44a6-a7ad-6a7eed88722c

Cloud Provider: AWS

Platform: Terraform

Severity: Medium

Category: Backup

Learn More

Description

Amazon S3 buckets should have versioning enabled to protect against accidental or malicious deletion and overwriting of objects. Without versioning (versioning { enabled = false }), deleted or overwritten files cannot be recovered, potentially leading to permanent data loss or loss of critical information. Enabling versioning (versioning { enabled = true }) allows you to preserve, retrieve, and restore every version of every object stored in the bucket, significantly improving data resiliency.

Compliant Code Examples

terraform {
  required_providers {
    aws = {
      source = "hashicorp/aws"
      version = "4.2.0"
    }
  }
}

provider "aws" {
  # Configuration options
}

resource "aws_s3_bucket" "b" {
  bucket = "my-tf-test-bucket"

  tags = {
    Name        = "My bucket"
    Environment = "Dev"
  }
}

resource "aws_s3_bucket_versioning" "example" {
  bucket = aws_s3_bucket.b.id

  versioning_configuration {
    status = "Enabled"
  }
}

module "s3_bucket" {
  source = "terraform-aws-modules/s3-bucket/aws"

  version = "3.7.0"

  bucket = "my-s3-bucket"
  acl    = "private"

  versioning = {
    enabled = true
  }

}

provider "aws" {
  region = "us-east-1"
}

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 3.0"
    }
  }
}

resource "aws_s3_bucket" "negative1" {
  bucket = "my-tf-test-bucket"
  acl    = "private"

  tags = {
    Name        = "My bucket"
    Environment = "Dev"
  }

  versioning {
    enabled = true
  }
}

Non-Compliant Code Examples

module "s3_bucket" {
  source = "terraform-aws-modules/s3-bucket/aws"

  version = "3.7.0"

  bucket = "my-s3-bucket"
  acl    = "private"

}

provider "aws" {
  region = "us-east-1"
}

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 3.0"
    }
  }
}

resource "aws_s3_bucket" "positive2" {
  bucket = "my-tf-test-bucket"
  acl    = "private"

  tags = {
    Name        = "My bucket"
    Environment = "Dev"
  }
}

provider "aws" {
  region = "us-east-1"
}

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 3.0"
    }
  }
}

resource "aws_s3_bucket" "positive3" {
  bucket = "my-tf-test-bucket"
  acl    = "private"

  tags = {
    Name        = "My bucket"
    Environment = "Dev"
  }

  versioning {
    mfa_delete = true
  }
}