Cloudfront Viewer Protocol Policy Allows HTTP

• Query id: 55af1353-2f62-4fa0-a8e1-a210ca2708f5
• Query name: Cloudfront Viewer Protocol Policy Allows HTTP
• Platform: Terraform
• Severity: Medium
• Category: Encryption
• URL: Github

Description

Checks if the connection between CloudFront and the viewer is encrypted
Documentation

Code samples

Code samples with security vulnerabilities

Positive test num. 1 - tf file

#this is a problematic code where the query should report a result(s)
resource "aws_cloudfront_distribution" "positive1" {
  origin {
    domain_name = "mybucket"
    origin_id   = "myS3Origin"

    s3_origin_config {
      origin_access_identity = "origin-access-identity/cloudfront/ABCDEFG1234567"
    }
  }

  enabled = true

  default_cache_behavior {
    allowed_methods  = ["DELETE", "GET", "HEAD", "OPTIONS", "PATCH", "POST", "PUT"]
    cached_methods   = ["GET", "HEAD"]
    target_origin_id = "myS3Origin"

    forwarded_values {
      query_string = false

      cookies {
        forward = "none"
      }
    }

    viewer_protocol_policy = "allow-all"
    min_ttl                = 0
    default_ttl            = 3600
    max_ttl                = 86400
  }

  restrictions {
    geo_restriction {
      restriction_type = "whitelist"
      locations        = ["US", "CA", "GB", "DE"]
    }
  }

  viewer_certificate {
    cloudfront_default_certificate = false
    minimum_protocol_version = "SSLv3"
  }
}

resource "aws_cloudfront_distribution" "positive2" {
  origin {
    domain_name = "mybucket"
    origin_id   = "myS3Origin"

    s3_origin_config {
      origin_access_identity = "origin-access-identity/cloudfront/ABCDEFG1234567"
    }
  }

  enabled = true

  default_cache_behavior {
    allowed_methods  = ["DELETE", "GET", "HEAD", "OPTIONS", "PATCH", "POST", "PUT"]
    cached_methods   = ["GET", "HEAD"]
    target_origin_id = "myS3Origin"

    forwarded_values {
      query_string = false

      cookies {
        forward = "none"
      }
    }

    viewer_protocol_policy = "https-only"
    min_ttl                = 0
    default_ttl            = 3600
    max_ttl                = 86400
  }

  ordered_cache_behavior {
    path_pattern     = "/content/immutable/*"
    allowed_methods  = ["GET", "HEAD", "OPTIONS"]
    cached_methods   = ["GET", "HEAD", "OPTIONS"]
    target_origin_id = "myS3Origin"

    forwarded_values {
      query_string = false
      headers      = ["Origin"]

      cookies {
        forward = "none"
      }
    }

    min_ttl                = 0
    default_ttl            = 86400
    max_ttl                = 31536000
    compress               = true
    viewer_protocol_policy = "allow-all"
  }

  restrictions {
    geo_restriction {
      restriction_type = "whitelist"
      locations        = ["US", "CA", "GB", "DE"]
    }
  }

  viewer_certificate {
    cloudfront_default_certificate = false
    minimum_protocol_version = "SSLv3"
  }
}

Code samples without security vulnerabilities

Negative test num. 1 - tf file

#this code is a correct code for which the query should not find any result
resource "aws_cloudfront_distribution" "negative1" {
  origin {
    domain_name = "mybucket"
    origin_id   = "myS3Origin"

    s3_origin_config {
      origin_access_identity = "origin-access-identity/cloudfront/ABCDEFG1234567"
    }
  }

  enabled = true

  default_cache_behavior {
    allowed_methods  = ["DELETE", "GET", "HEAD", "OPTIONS", "PATCH", "POST", "PUT"]
    cached_methods   = ["GET", "HEAD"]
    target_origin_id = "myS3Origin"

    forwarded_values {
      query_string = false

      cookies {
        forward = "none"
      }
    }

    viewer_protocol_policy = "https-only"
    min_ttl                = 0
    default_ttl            = 3600
    max_ttl                = 86400
  }

  restrictions {
    geo_restriction {
      restriction_type = "whitelist"
      locations        = ["US", "CA", "GB", "DE"]
    }
  }

  viewer_certificate {
    cloudfront_default_certificate = false
    minimum_protocol_version = "SSLv3"
  }
}