Khan Academy: Sensitive information/action is stored/done is done using a GET request

2016-08-27T14:22:15
ID H1:163820
Type hackerone
Reporter dermeister
Modified 2019-06-23T09:11:49

Description

Description:

The action to remove an email from account is done using a GET request and it has security token.

The URL is : https://www.khanacademy.org/settings/unlinkaccount?email=134hackerone%40gmail.com&fkey=<security token here>

It is never a good practice to have sensitive information in URL. Following are the reasons: + GET requests can be cached + GET requests remain in the browser history + GET requests can be bookmarked

Whereas: + POST requests are never cached + POST requests do not remain in the browser history + POST requests cannot be bookmarked

Attack Scenario:

If the URL goes in the hands of malicious user then host a malicious website and perform a CSRF attack against the victim and this un-link that email address.