Invalid Tag External Documentation URL (v3)

• Query id: 5aea1d7e-b834-4749-b143-2c7ec3bd5922
• Query name: Invalid Tag External Documentation URL (v3)
• Platform: OpenAPI
• Severity: Info
• Category: Best Practices
• CWE: 710
• URL: Github

Description

Tag External Documentation URL should be a valid URL
Documentation

Code samples

Code samples with security vulnerabilities

Positive test num. 1 - json file

{
  "openapi": "3.0.0",
  "info": {
    "title": "Simple API Overview",
    "version": "1.0.0",
    "contact": {
      "name": "contact",
      "url": "https://www.google.com/",
      "email": "user@gmail.com"
    }
  },
  "paths": {
    "/": {
      "get": {
        "operationId": "listVersionsv2",
        "summary": "List API versions",
        "responses": {
          "200": {
            "description": "200 response",
            "content": {
              "application/json": {
                "examples": {
                  "foo": {
                    "value": {
                      "versions": [
                        {
                          "status": "CURRENT",
                          "updated": "2011-01-21T11:33:21Z",
                          "id": "v2.0",
                          "links": [
                            {
                              "href": "http://127.0.0.1:8774/v2/",
                              "rel": "self"
                            }
                          ]
                        }
                      ]
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "tags": [
    {
      "externalDocs": {
        "url": "/"
      },
      "name": "pets",
      "description": "Everything about your Pets"
    },
    {
      "name": "store",
      "description": "Access to Petstore orders",
      "externalDocs": {
        "url": "/"
      }
    }
  ]
}

Positive test num. 2 - yaml file

openapi: 3.0.0
info:
  title: Simple API Overview
  version: 1.0.0
paths:
  "/":
    get:
      operationId: listVersionsv2
      summary: List API versions
      responses:
        "200":
          description: 200 response
          content:
            application/json:
              examples:
                foo:
                  value:
                    versions:
                      - status: CURRENT
                        updated: "2011-01-21T11:33:21Z"
                        id: v2.0
                        links:
                          - href: http://127.0.0.1:8774/v2/
                            rel: self
tags:
  - name: pets
    description: Everything about your Pets
    externalDocs:
      url: /
  - name: store
    description: Access to Petstore orders
    externalDocs:
      url: /

Positive test num. 3 - json file

{
  "swagger": "2.0",
  "info": {
    "title": "Simple API Overview",
    "version": "1.0.0",
    "contact": {
      "name": "contact",
      "url": "https://www.google.com/",
      "email": "user@gmail.com"
    }
  },
  "paths": {
    "/": {
      "get": {
        "operationId": "listVersionsv2",
        "summary": "List API versions",
        "responses": {
          "200": {
            "description": "200 response"
          }
        }
      }
    }
  },
  "tags": [
    {
      "externalDocs": {
        "url": "/"
      },
      "name": "pets",
      "description": "Everything about your Pets"
    },
    {
      "name": "store",
      "description": "Access to Petstore orders",
      "externalDocs": {
        "url": "/"
      }
    }
  ]
}

Positive test num. 4 - yaml file

swagger: "2.0"
info:
  title: Simple API Overview
  version: 1.0.0
  contact:
    name: contact
    url: https://www.google.com/
    email: user@gmail.com
paths:
  "/":
    get:
      operationId: listVersionsv2
      summary: List API versions
      responses:
        "200":
          description: 200 response
tags:
  - name: pets
    description: Everything about your Pets
    externalDocs:
      url: /
  - name: store
    description: Access to Petstore orders
    externalDocs:
      url: /

Code samples without security vulnerabilities

Negative test num. 1 - json file

{
  "openapi": "3.0.0",
  "info": {
    "title": "Simple API Overview",
    "version": "1.0.0",
    "contact": {
      "name": "contact",
      "url": "https://www.google.com/",
      "email": "user@gmail.com"
    }
  },
  "paths": {
    "/": {
      "get": {
        "operationId": "listVersionsv2",
        "summary": "List API versions",
        "responses": {
          "200": {
            "description": "200 response",
            "content": {
              "application/json": {
                "examples": {
                  "foo": {
                    "value": {
                      "versions": [
                        {
                          "status": "CURRENT",
                          "updated": "2011-01-21T11:33:21Z",
                          "id": "v2.0",
                          "links": [
                            {
                              "href": "http://127.0.0.1:8774/v2/",
                              "rel": "self"
                            }
                          ]
                        }
                      ]
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "tags": [
    {
      "externalDocs": {
        "url": "http://docs.my-api.com/pet-operations.htm"
      },
      "name": "pets",
      "description": "Everything about your Pets"
    },
    {
      "name": "store",
      "description": "Access to Petstore orders",
      "externalDocs": {
        "url": "http://docs.my-api.com/store-orders.htm"
      }
    }
  ]
}

Negative test num. 2 - yaml file

openapi: 3.0.0
info:
  title: Simple API Overview
  version: 1.0.0
paths:
  "/":
    get:
      operationId: listVersionsv2
      summary: List API versions
      responses:
        "200":
          description: 200 response
          content:
            application/json:
              examples:
                foo:
                  value:
                    versions:
                      - status: CURRENT
                        updated: "2011-01-21T11:33:21Z"
                        id: v2.0
                        links:
                          - href: http://127.0.0.1:8774/v2/
                            rel: self
tags:
  - name: pets
    description: Everything about your Pets
    externalDocs:
      url: http://docs.my-api.com/pet-operations.htm
  - name: store
    description: Access to Petstore orders
    externalDocs:
      url: http://docs.my-api.com/store-orders.htm

Negative test num. 3 - json file

{
  "swagger": "2.0",
  "info": {
    "title": "Simple API Overview",
    "version": "1.0.0",
    "contact": {
      "name": "contact",
      "url": "https://www.google.com/",
      "email": "user@gmail.com"
    }
  },
  "paths": {
    "/": {
      "get": {
        "operationId": "listVersionsv2",
        "summary": "List API versions",
        "responses": {
          "200": {
            "description": "200 response"
          }
        }
      }
    }
  },
  "tags": [
    {
      "externalDocs": {
        "url": "http://docs.my-api.com/pet-operations.htm"
      },
      "name": "pets",
      "description": "Everything about your Pets"
    },
    {
      "name": "store",
      "description": "Access to Petstore orders",
      "externalDocs": {
        "url": "http://docs.my-api.com/store-orders.htm"
      }
    }
  ]
}

Negative test num. 4 - yaml file

swagger: "2.0"
info:
  title: Simple API Overview
  version: 1.0.0
  contact:
    name: contact
    url: https://www.google.com/
    email: user@gmail.com
paths:
  "/":
    get:
      operationId: listVersionsv2
      summary: List API versions
      responses:
        "200":
          description: 200 response
tags:
  - name: pets
    description: Everything about your Pets
    externalDocs:
      url: http://docs.my-api.com/pet-operations.htm
  - name: store
    description: Access to Petstore orders
    externalDocs:
      url: http://docs.my-api.com/store-orders.htm