Cloudfront Viewer Protocol Policy Allows HTTP

• Query id: 31733ee2-fef0-4e87-9778-65da22a8ecf1
• Query name: Cloudfront Viewer Protocol Policy Allows HTTP
• Platform: CloudFormation
• Severity: Medium
• Category: Encryption
• CWE: 319
• 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 - yaml file

#this is a problematic code where the query should report a result(s)
AWSTemplateFormatVersion: "2010-09-09"
Resources:
  cloudfrontdistribution_1:
    Type: AWS::CloudFront::Distribution
    Properties:
      DistributionConfig:
        CacheBehaviors:
          - LambdaFunctionAssociations:
              - EventType: viewer-request
                LambdaFunctionARN: examp
        DefaultCacheBehavior:
          ViewerProtocolPolicy: allow-all
          LambdaFunctionAssociations:
            - EventType: viewer-request
              LambdaFunctionARN: examp
        IPV6Enabled: true
        Origins:
          - CustomOriginConfig:
              OriginKeepaliveTimeout: 60
              OriginReadTimeout: 30
      Tags:
        - Key: name
          Value: example
  cloudfrontdistribution_2:
    Type: AWS::CloudFront::Distribution
    Properties:
      DistributionConfig:
        CacheBehaviors:
          - ViewerProtocolPolicy: allow-all
            LambdaFunctionAssociations:
              - EventType: viewer-request
                LambdaFunctionARN: examp
        DefaultCacheBehavior:
          LambdaFunctionAssociations:
            - EventType: viewer-request
              LambdaFunctionARN: examp
        IPV6Enabled: true
        Origins:
          - CustomOriginConfig:
              OriginKeepaliveTimeout: 60
              OriginReadTimeout: 30
        Tags:
        - Key: name
          Value: example

Positive test num. 2 - json file

{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Resources": {
    "cloudfrontdistribution_2": {
      "Type": "AWS::CloudFront::Distribution",
      "Properties": {
        "DistributionConfig": {
          "CacheBehaviors": [
            {
              "ViewerProtocolPolicy": "allow-all",
              "LambdaFunctionAssociations": [
                {
                  "EventType": "viewer-request",
                  "LambdaFunctionARN": "examp"
                }
              ]
            }
          ],
          "DefaultCacheBehavior": {
            "LambdaFunctionAssociations": [
              {
                "LambdaFunctionARN": "examp",
                "EventType": "viewer-request"
              }
            ]
          },
          "IPV6Enabled": true,
          "Origins": [
            {
              "CustomOriginConfig": {
                "OriginKeepaliveTimeout": 60,
                "OriginReadTimeout": 30
              }
            }
          ],
          "Tags": [
            {
              "Value": "example",
              "Key": "name"
            }
          ]
        }
      }
    },
    "cloudfrontdistribution_1": {
      "Type": "AWS::CloudFront::Distribution",
      "Properties": {
        "DistributionConfig": {
          "DefaultCacheBehavior": {
            "ViewerProtocolPolicy": "allow-all",
            "LambdaFunctionAssociations": [
              {
                "EventType": "viewer-request",
                "LambdaFunctionARN": "examp"
              }
            ]
          },
          "IPV6Enabled": true,
          "Origins": [
            {
              "CustomOriginConfig": {
                "OriginKeepaliveTimeout": 60,
                "OriginReadTimeout": 30
              }
            }
          ],
          "CacheBehaviors": [
            {
              "LambdaFunctionAssociations": [
                {
                  "EventType": "viewer-request",
                  "LambdaFunctionARN": "examp"
                }
              ]
            }
          ]
        },
        "Tags": [
          {
            "Key": "name",
            "Value": "example"
          }
        ]
      }
    }
  }
}

Code samples without security vulnerabilities

Negative test num. 1 - yaml file

#this code is a correct code for which the query should not find any result
AWSTemplateFormatVersion: "2010-09-09"
Resources:
  cloudfrontdistribution_1:
    Type: AWS::CloudFront::Distribution
    Properties:
      DistributionConfig:
        CacheBehaviors:
          - LambdaFunctionAssociations:
              - EventType: viewer-request
                LambdaFunctionARN: examp
        DefaultCacheBehavior:
          ViewerProtocolPolicy: https-only
          LambdaFunctionAssociations:
            - EventType: viewer-request
              LambdaFunctionARN: examp
        IPV6Enabled: true
        Origins:
          - CustomOriginConfig:
              OriginKeepaliveTimeout: 60
              OriginReadTimeout: 30
      Tags:
        - Key: name
          Value: example

Negative test num. 2 - json file

{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Resources": {
    "cloudfrontdistribution_1": {
      "Type": "AWS::CloudFront::Distribution",
      "Properties": {
        "DistributionConfig": {
          "CacheBehaviors": [
            {
              "LambdaFunctionAssociations": [
                {
                  "EventType": "viewer-request",
                  "LambdaFunctionARN": "examp"
                }
              ]
            }
          ],
          "DefaultCacheBehavior": {
            "ViewerProtocolPolicy": "https-only",
            "LambdaFunctionAssociations": [
              {
                "EventType": "viewer-request",
                "LambdaFunctionARN": "examp"
              }
            ]
          },
          "IPV6Enabled": true,
          "Origins": [
            {
              "CustomOriginConfig": {
                "OriginKeepaliveTimeout": 60,
                "OriginReadTimeout": 30
              }
            }
          ]
        },
        "Tags": [
          {
            "Key": "name",
            "Value": "example"
          }
        ]
      }
    }
  }
}

Negative test num. 3 - yaml file

#this code is a correct code for which the query should not find any result
AWSTemplateFormatVersion: "2010-09-09"
Resources:
  cloudfrontdistribution_1:
    Type: AWS::CloudFront::Distribution
    Properties:
      DistributionConfig:
        CacheBehaviors:
          - LambdaFunctionAssociations:
              - EventType: viewer-request
                LambdaFunctionARN: examp
        DefaultCacheBehavior:
          ViewerProtocolPolicy: redirect-to-https
          LambdaFunctionAssociations:
            - EventType: viewer-request
              LambdaFunctionARN: examp
        IPV6Enabled: true
        Origins:
          - CustomOriginConfig:
              OriginKeepaliveTimeout: 60
              OriginReadTimeout: 30
      Tags:
        - Key: name
          Value: example