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CloudFront distribution custom origin does not use secure TLS protocol version (1.2 and above) Affecting CloudFront service in AWS

Severity

0.0
medium
0
10
Severity Framework
Snyk CCSS
Rule category
Data/ Encryption Protocols

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Frameworks
AWS-Well-ArchitectedCSA-CCMISO-27001NIST-800-53PCI-DSSSOC-2
  • Snyk IDSNYK-CC-00203
  • creditSnyk Research Team
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Description

Encryption should be set with the latest version of TLS where possible. Versions prior to TLS 1.2 are deprecated and usage may pose security risks.

How to fix?

Set the origin.custom_origin_config.origin_ssl_protocols attribute to include only TLSv1.2 or later.

Invalid values:

  • SSLv2
  • SSLv3
  • TLSv1
  • TLSv1.1

Example Configuration

resource "aws_cloudfront_distribution" "distro" {
  origin {
    domain_name = "example.com"
    origin_id   = "${local.origin_id}"

    custom_origin_config {
      http_port = "80"
      https_port = "443"
      origin_ssl_protocols = ["TLSv1.2"]
      origin_protocol_policy = "https-only"
    }
  }

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

  viewer_certificate {
    cloudfront_default_certificate = true
  }

  default_cache_behavior {
    allowed_methods  = ["DELETE", "GET", "HEAD", "OPTIONS", "PATCH", "POST", "PUT"]
    cached_methods   = ["GET", "HEAD"]
    target_origin_id = "${local.origin_id}"

    forwarded_values {
      query_string = false

      cookies {
        forward = "none"
      }
    }

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