Secure Ciphers Disabled

• Query id: be96849c-3df6-49c2-bc16-778a7be2519c
• Query name: Secure Ciphers Disabled
• Platform: CloudFormation
• Severity: Medium
• Category: Encryption
• CWE: 326
• URL: Github

Description

Check if secure ciphers aren't used in CloudFront
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:
    Type: AWS::CloudFront::Distribution
    Properties:
      DistributionConfig:
        CacheBehaviors:
          - 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
      ViewerCertificate:
        CloudFrontDefaultCertificate: false
        MinimumProtocolVersion: SSLv3

Positive test num. 2 - json file

{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Resources": {
    "cloudfrontdistribution": {
      "Type": "AWS::CloudFront::Distribution",
      "Properties": {
        "DistributionConfig": {
          "Origins": [
            {
              "CustomOriginConfig": {
                "OriginKeepaliveTimeout": 60,
                "OriginReadTimeout": 30
              }
            }
          ],
          "CacheBehaviors": [
            {
              "LambdaFunctionAssociations": [
                {
                  "EventType": "viewer-request",
                  "LambdaFunctionARN": "examp"
                }
              ]
            }
          ],
          "DefaultCacheBehavior": {
            "LambdaFunctionAssociations": [
              {
                "EventType": "viewer-request",
                "LambdaFunctionARN": "examp"
              }
            ]
          },
          "IPV6Enabled": true
        },
        "Tags": [
          {
            "Key": "name",
            "Value": "example"
          }
        ],
        "ViewerCertificate": {
          "CloudFrontDefaultCertificate": false,
          "MinimumProtocolVersion": "SSLv3"
        }
      }
    }
  }
}

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:
    Type: AWS::CloudFront::Distribution
    Properties:
      DistributionConfig:
        CacheBehaviors:
          - 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
      ViewerCertificate:
        CloudFrontDefaultCertificate: true

Negative test num. 2 - json file

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