File Parameter With Wrong Consumes Property

• Query id: 7f91992f-b4c8-43bf-9bf9-fae9ecdb6e3a
• Query name: File Parameter With Wrong Consumes Property
• Platform: OpenAPI
• Severity: Info
• Category: Structure and Semantics
• CWE: 20
• URL: Github

Description

Operations file parameters consumes must be 'multipart/form-data', 'application/x-www-form-urlencoded' or both
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"
  },
  "paths": {
    "/": {
      "get": {
        "operationId": "listVersionsv2",
        "summary": "List API versions",
        "parameters": [
          {
            "name": "File",
            "type": "file",
            "in": "formData"
          }
        ],
        "consumes": [
          "application/json"
        ],
        "responses": {
          "200": {
            "description": "200 response"
          }
        }
      }
    }
  },
  "definitions": {
    "User": {
      "type": "object",
      "required": [
        "id",
        "name"
      ],
      "properties": {
        "id": {
          "type": "integer",
          "format": "int64"
        },
        "name": {
          "type": "string"
        }
      }
    }
  }
}

Positive test num. 2 - yaml file

swagger: '2.0'
info:
  title: Simple API Overview
  version: 1.0.0
paths:
  "/":
    get:
      operationId: listVersionsv2
      summary: List API versions
      parameters:
      - name: File
        type: file
        in: formData
      consumes:
      - application/json
      responses:
        '200':
          description: 200 response
definitions:
  User:
    type: object
    required:
    - id
    - name
    properties:
      id:
        type: integer
        format: int64
      name:
        type: string

Code samples without security vulnerabilities

Negative test num. 1 - json file

{
  "swagger": "2.0",
  "info": {
    "title": "Simple API Overview",
    "version": "1.0.0"
  },
  "paths": {
    "/": {
      "get": {
        "operationId": "listVersionsv2",
        "summary": "List API versions",
        "parameters": [
          {
            "name": "File",
            "type": "file",
            "in": "formData"
          }
        ],
        "consumes": [
          "multipart/form-data"
        ],
        "responses": {
          "200": {
            "description": "200 response"
          }
        }
      }
    }
  },
  "definitions": {
    "User": {
      "type": "object",
      "required": [
        "id",
        "name"
      ],
      "properties": {
        "id": {
          "type": "integer",
          "format": "int64"
        },
        "name": {
          "type": "string"
        }
      }
    }
  }
}

Negative test num. 2 - yaml file

swagger: '2.0'
info:
  title: Simple API Overview
  version: 1.0.0
paths:
  "/":
    get:
      operationId: listVersionsv2
      summary: List API versions
      parameters:
      - name: File
        type: file
        in: formData
      consumes:
      - multipart/form-data
      responses:
        '200':
          description: 200 response
definitions:
  User:
    type: object
    required:
    - id
    - name
    properties:
      id:
        type: integer
        format: int64
      name:
        type: string