Invalid OAuth2 Token URL (v2)
- Query id: 274f910a-0665-4f08-b66d-7058fe927dba
- Query name: Invalid OAuth2 Token URL (v2)
- Platform: OpenAPI
- Severity: Medium
- Category: Access Control
- URL: Github
Description¶
OAuth2 security definition flow requires a valid URL in the tokenUrl field
Documentation
Code samples¶
Code samples with security vulnerabilities¶
Postitive test num. 1 - yaml file
swagger: "2.0"
info:
title: Simple API Overview
version: 1.0.0
license:
name: "Apache 2.0"
url: "https://www.apache.org/licenses/LICENSE-2.0.html"
paths:
"/":
get:
operationId: listVersionsv2
summary: List API versions
responses:
"200":
description: 200 response
securityDefinitions:
oAuth2AuthCodeNeg3:
type: oauth2
description: For more information, see https://api.my.company.com/docs/oauth
flow: accessCode
authorizationUrl: https://api.my.company.com/oauth/authorize
tokenUrl: http://example.com#@evil.com/
scopes:
read:api: read your apis
Postitive test num. 2 - json file
{
"swagger": "2.0",
"info": {
"title": "Simple API Overview",
"version": "1.0.0",
"license": {
"name": "Apache 2.0",
"url": "https://www.apache.org/licenses/LICENSE-2.0.html"
}
},
"paths": {
"/": {
"get": {
"operationId": "listVersionsv2",
"summary": "List API versions",
"responses": {
"200": {
"description": "200 response"
}
}
}
}
},
"securityDefinitions": {
"oAuth2AuthCodeNeg3": {
"type": "oauth2",
"description": "For more information, see https://api.my.company.com/docs/oauth",
"flow": "accessCode",
"authorizationUrl": "https://api.my.company.com/oauth/authorize",
"tokenUrl": "http://example.com#@evil.com/",
"scopes": {
"read:api": "read your apis"
}
}
}
}
Code samples without security vulnerabilities¶
Negative test num. 1 - yaml file
swagger: "2.0"
info:
title: Simple API Overview
version: 1.0.0
license:
name: "Apache 2.0"
url: "https://www.apache.org/licenses/LICENSE-2.0.html"
paths:
"/":
get:
operationId: listVersionsv2
summary: List API versions
responses:
"200":
description: 200 response
securityDefinitions:
oAuth2AuthCodeNeg3:
type: oauth2
description: For more information, see https://api.my.company.com/docs/oauth
flow: accessCode
authorizationUrl: https://api.my.company.com/oauth/authorize
tokenUrl: https://api.my.company.com/oauth/token
scopes:
read:api: read your apis
Negative test num. 2 - json file
{
"swagger": "2.0",
"info": {
"title": "Simple API Overview",
"version": "1.0.0",
"license": {
"name": "Apache 2.0",
"url": "https://www.apache.org/licenses/LICENSE-2.0.html"
}
},
"paths": {
"/": {
"get": {
"operationId": "listVersionsv2",
"summary": "List API versions",
"responses": {
"200": {
"description": "200 response"
}
}
}
}
},
"securityDefinitions": {
"oAuth2AuthCodeNeg3": {
"type": "oauth2",
"description": "For more information, see https://api.my.company.com/docs/oauth",
"flow": "accessCode",
"authorizationUrl": "https://api.my.company.com/oauth/authorize",
"tokenUrl": "https://api.my.company.com/oauth/token",
"scopes": {
"read:api": "read your apis"
}
}
}
}