Описание
khoj has an IDOR in subscription management allows unauthorized subscription modifications
Summary
An Insecure Direct Object Reference (IDOR) vulnerability in the update_subscription endpoint allows any authenticated user to manipulate other users' Stripe subscriptions by simply modifying the email parameter in the request.
Details
The vulnerability exists in the subscription endpoint at /api/subscription. The endpoint uses an email parameter as a direct reference to user subscriptions without verifying object ownership. While authentication is required, there is no authorization check to verify if the authenticated user owns the referenced subscription.
Vulnerable code in /api/subscription:
PoC
-
Create a customer account in stripe:
- Customer A:
adventure8812@zeropath.com(attacker)
- Customer A:
-
Log in as any user.
-
Send this request:
- The subscription for Customer A is successfully set to cancel.
Impact
High: Revenue loss via mass cancellation of subscriptions. Loss of customer trust by re-enabling subscriptions they had set to cancel.
Resolution
This was fixed in the following commit which limited subscription update operations to the authenticated user: https://github.com/khoj-ai/khoj/commit/47d3c8c23597900af708bdc60aced3ae5d2064c1. Support for arbitrarily presenting an email for update has been deprecated.
Пакеты
khoj
< 1.29.0
1.29.0
Связанные уязвимости
Khoj is a self-hostable artificial intelligence app. Prior to version 1.29.10, an Insecure Direct Object Reference (IDOR) vulnerability in the update_subscription endpoint allows any authenticated user to manipulate other users' Stripe subscriptions by simply modifying the email parameter in the request. The vulnerability exists in the subscription endpoint at `/api/subscription`. The endpoint uses an email parameter as a direct reference to user subscriptions without verifying object ownership. While authentication is required, there is no authorization check to verify if the authenticated user owns the referenced subscription. The issue was fixed in version 1.29.10. Support for arbitrarily presenting an email for update has been deprecated.