gistfile1.txt

{
  "AWSTemplateFormatVersion": "2010-09-09",
    "Description": "Creates an AWS WAF configuration that protects against common attacks",
    "Metadata": {
    "AWS::CloudFormation::Interface": {
      "ParameterGroups": [
        {
          "Label": {
            "default": "Web ACL Name for Common Attack Protection"
          },
          "Parameters": [
            "WebACLName"
          ]
        }
      ],
      "ParameterLabels": {
        "WebACLName": {
          "default": "Name"
        }
      }
    }
  },
  "Parameters": {
    "WebACLName": {
      "Type": "String",
      "Default": "CommonAttackProtection",
      "Description": "Enter the name you want to use for the WebACL. This value is also added as a prefix for the names of the rules, conditions, and CloudWatch metrics created by this template."
    }
  },
  "Resources": {
    "MyWebACL": {
      "Properties": {
        "Name": { "Ref" : "WebACLName" },
        "DefaultAction": {
          "Type": "ALLOW"
        },
        "MetricName": { "Ref" : "WebACLName" },
        "Rules": [
          {
            "Action": {
              "Type": "BLOCK"
            },
            "Priority": 1,
            "RuleId": {
              "Ref": "ManualIPBlockRule"
            }
          },
          {
            "Action": {
              "Type": "COUNT"
            },
            "Priority": 2,
            "RuleId": {
              "Ref": "SizeMatchRule"
            }
          },
          {
            "Action": {
              "Type": "BLOCK"
            },
            "Priority": 3,
            "RuleId": {
              "Ref": "SqliRule"
            }
          },
          {
            "Action": {
              "Type": "BLOCK"
            },
            "Priority": 4,
            "RuleId": {
              "Ref": "XssRule"
            }
          }
        ]
      },
      "Type": "AWS::WAFRegional::WebACL"
    },
    "SqliRule": {
      "Properties": {
        "Name": { "Fn::Join" : [ "", [{ "Ref" : "WebACLName" }, "SqliRule"]] },
        "MetricName": { "Fn::Join" : [ "", [{"Ref" : "WebACLName"}, "SqliRule"]] },
        "Predicates": [
          {
            "DataId": {
              "Ref": "SqliMatchSet"
            },
            "Negated": false,
            "Type": "SqlInjectionMatch"
          }
        ]
      },
      "Type": "AWS::WAF::Rule"
    },
    "XssRule": {
      "Properties": {
        "Name": { "Fn::Join" : [ "", [{"Ref" : "WebACLName"}, "XssRule"]] },
        "MetricName": { "Fn::Join" : [ "", [{"Ref" : "WebACLName"}, "XssRule"]]},
        "Predicates": [
          {
            "DataId": {
              "Ref": "XssMatchSet"
            },
            "Negated": false,
            "Type": "XssMatch"
          }
        ]
      },
      "Type": "AWS::WAF::Rule"
    },
    "SizeMatchRule": {
      "Properties": {
        "Name": { "Fn::Join" : [ "", [{"Ref" : "WebACLName"}, "LargeBodyMatchRule"]] },
        "MetricName": { "Fn::Join" : [ "", [{"Ref" : "WebACLName"}, "DetectLargeBody"]]},
        "Predicates": [
          {
            "DataId": {
              "Ref": "SizeMatchSet"
            },
            "Negated": false,
            "Type": "SizeConstraint"
          }
        ]
      },
      "Type": "AWS::WAF::Rule"
    },
    "ManualIPBlockRule": {
      "Properties": {
        "Name": { "Fn::Join" : [ "", [{"Ref" : "WebACLName"}, "ManualIPBlockRule"]] },
        "MetricName": { "Fn::Join" : [ "", [{"Ref" : "WebACLName"}, "ManualIPBlockRule"]]},
        "Predicates": [
          {
            "DataId": {
              "Ref": "WAFManualIPBlockSet"
            },
            "Negated": false,
            "Type": "IPMatch"
          }
        ]
      },
      "Type": "AWS::WAF::Rule"
    },
    "WAFManualIPBlockSet": {
      "Properties": {
        "Name": "Manual IP Block Set"
      },
      "Type": "AWS::WAF::IPSet"
    },
    "SizeMatchSet": {
      "Properties": {
        "Name": {"Fn::Join" : [ "", [{"Ref" : "WebACLName"}, "LargeBodyMatch"]]},
        "SizeConstraints": [
          {
            "FieldToMatch": {
              "Type": "BODY"
            },
            "ComparisonOperator": "GT",
            "Size": "8192",
            "TextTransformation": "NONE"
          }
        ]
      },
      "Type": "AWS::WAF::SizeConstraintSet"
    },
    "SqliMatchSet": {
      "Properties": {
        "Name": {"Fn::Join" : [ "", [{"Ref" : "WebACLName"}, "SqliMatch"]]},
        "SqlInjectionMatchTuples": [
          {
            "FieldToMatch": {
              "Type": "QUERY_STRING"
            },
            "TextTransformation": "URL_DECODE"
          },
          {
            "FieldToMatch": {
              "Type": "QUERY_STRING"
            },
            "TextTransformation": "HTML_ENTITY_DECODE"
          },
          {
            "FieldToMatch": {
              "Type": "BODY"
            },
            "TextTransformation": "URL_DECODE"
          },
          {
            "FieldToMatch": {
              "Type": "BODY"
            },
            "TextTransformation": "HTML_ENTITY_DECODE"
          },
          {
            "FieldToMatch": {
              "Type": "URI"
            },
            "TextTransformation": "URL_DECODE"
          }
        ]
      },
      "Type": "AWS::WAF::SqlInjectionMatchSet"
    },
    "XssMatchSet": {
      "Properties": {
        "Name": {"Fn::Join" : [ "", [{"Ref" : "WebACLName"}, "XssMatch"]]},
        "XssMatchTuples": [
          {
            "FieldToMatch": {
              "Type": "QUERY_STRING"
            },
            "TextTransformation": "URL_DECODE"
          },
          {
            "FieldToMatch": {
              "Type": "QUERY_STRING"
            },
            "TextTransformation": "HTML_ENTITY_DECODE"
          },
          {
            "FieldToMatch": {
              "Type": "BODY"
            },
            "TextTransformation": "URL_DECODE"
          },
          {
            "FieldToMatch": {
              "Type": "BODY"
            },
            "TextTransformation": "HTML_ENTITY_DECODE"
          },
          {
            "FieldToMatch": {
              "Type": "URI"
            },
            "TextTransformation": "URL_DECODE"
          }
        ]
      },
      "Type": "AWS::WAF::XssMatchSet"
    }
  }
}