Host With Invalid Pattern

• Query id: 3d7d7b6c-fb0a-475e-8a28-c125e30d15f0
• Query name: Host With Invalid Pattern
• Platform: OpenAPI
• Severity: Info
• Category: Structure and Semantics
• CWE: 20
• URL: Github

Description

Host field should be an IP or a valid host name
Documentation

Code samples

Code samples with security vulnerabilities

Positive test num. 1 - json file

{
  "swagger": "2.0",
  "info": {
    "title": "Simple API Overview",
    "version": "1.0.0"
  },
  "host": "kics.io/test",
  "paths": {
    "/": {
      "get": {
        "parameters": [
          {
            "name": "limit2",
            "in": "body",
            "description": "max records to return",
            "required": true,
            "schema": {
              "type": "integer"
            }
          }
        ],
        "operationId": "listVersionsv2",
        "summary": "List API versions",
        "responses": {
          "200": {
            "description": "200 response"
          }
        }
      }
    }
  },
  "parameters": {
    "limitParam": {
      "name": "limit",
      "in": "body",
      "description": "max records to return",
      "required": true,
      "schema": {
        "type": "integer"
      }
    }
  }
}

Positive test num. 2 - yaml file

---
swagger: '2.0'
info:
  title: Simple API Overview
  version: 1.0.0
host: kics.io/test
paths:
  "/":
    get:
      parameters:
      - name: limit2
        in: body
        description: max records to return
        required: true
        schema:
          type: integer
      operationId: listVersionsv2
      summary: List API versions
      responses:
        '200':
          description: 200 response
parameters:
  limitParam:
    name: limit
    in: body
    description: max records to return
    required: true
    schema:
      type: integer

Code samples without security vulnerabilities

Negative test num. 1 - json file

{
  "swagger": "2.0",
  "info": {
    "title": "Simple API Overview",
    "version": "1.0.0"
  },
  "host": "127.0.0.1:8080",
  "paths": {
    "/": {
      "get": {
        "parameters": [
          {
            "name": "limit2",
            "in": "body",
            "description": "max records to return",
            "required": true,
            "schema": {
              "type": "integer"
            }
          }
        ],
        "operationId": "listVersionsv2",
        "summary": "List API versions",
        "responses": {
          "200": {
            "description": "200 response"
          }
        }
      }
    }
  },
  "parameters": {
    "limitParam": {
      "name": "limit",
      "in": "body",
      "description": "max records to return",
      "required": true,
      "schema": {
        "type": "integer"
      }
    }
  }
}

Negative test num. 2 - json file

{
  "swagger": "2.0",
  "info": {
    "title": "Simple API Overview",
    "version": "1.0.0"
  },
  "host": "kics.io",
  "paths": {
    "/": {
      "get": {
        "parameters": [
          {
            "name": "limit2",
            "in": "body",
            "description": "max records to return",
            "required": true,
            "schema": {
              "type": "integer"
            }
          }
        ],
        "operationId": "listVersionsv2",
        "summary": "List API versions",
        "responses": {
          "200": {
            "description": "200 response"
          }
        }
      }
    }
  },
  "parameters": {
    "limitParam": {
      "name": "limit",
      "in": "body",
      "description": "max records to return",
      "required": true,
      "schema": {
        "type": "integer"
      }
    }
  }
}

Negative test num. 3 - yaml file

swagger: '2.0'
info:
  title: Simple API Overview
  version: 1.0.0
host: 127.0.0.1
paths:
  "/":
    get:
      parameters:
      - name: limit2
        in: body
        description: max records to return
        required: true
        schema:
          type: integer
      operationId: listVersionsv2
      summary: List API versions
      responses:
        '200':
          description: 200 response
parameters:
  limitParam:
    name: limit
    in: body
    description: max records to return
    required: true
    schema:
      type: integer

Negative test num. 4 - yaml file

swagger: '2.0'
info:
  title: Simple API Overview
  version: 1.0.0
host: kics.io
paths:
  "/":
    get:
      parameters:
      - name: limit2
        in: body
        description: max records to return
        required: true
        schema:
          type: integer
      operationId: listVersionsv2
      summary: List API versions
      responses:
        '200':
          description: 200 response
parameters:
  limitParam:
    name: limit
    in: body
    description: max records to return
    required: true
    schema:
      type: integer