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Express Invoice 7.12 Cross Site Scripting

Express Invoice 7.12 Cross Site Scripting
Posted Oct 14, 2019
Authored by Debashis Pal

Express Invoice version 7.12 suffers from a persistent cross site scripting vulnerability.

tags | exploit, xss
MD5 | a508267204d0e7f0085a1924b7c52caf

Express Invoice 7.12 Cross Site Scripting

Change Mirror Download
# Exploit Title: Express Invoice 7.12 - 'Customer' Persistent Cross-Site Scripting
# Exploit Author: Debashis Pal
# Date: 2019-10-13
# Vendor Homepage: https://www.nchsoftware.com/
# Source: https://www.nchsoftware.com/invoice/index.html
# Version: Express Invoice v7.12
# CVE : N/A
# Tested on: Windows 7 SP1(32bit)

# About Express Invoice v7.12
==============================
Express Invoice lets you create invoices you can print, email or fax directly to clients for faster payment.

# Vulnerability
================
Persistent Cross site scripting (XSS).

# PoC
======

1. Login as authenticated unprivileged user to Express Invoice version 7.12 web enable service i.e http://A.B.C.D:96 [Default installation].

2. Under "Invoices" Invoices List -> View Invoices -> Add New Invoice -> Customer: Field put </script><script>alert('XSS');</script>

Save the change.

or

Under "Items"
Items -> Add new item-> Item field: put </script><script>alert('XSS');</script>

Save the change.

or

Under "Customers"
Customers -> Add New Customer -> Customer Name: put </script><script>alert('XSS');</script>

Save the change.

or

Under "Quotes"
Quotes -> View Quotes -> Add New Quote -> Customer: put </script><script>alert('XSS');</script>

Save the change.

3. Login in authenticated privileged or unprivileged user to Express Invoice v7.12 web enable service and visit any of Invoices/Items/Customers/Quotes section, Persistent XSS payload will execute.


# Disclosure Timeline
======================
Vulnerability Discover Date: 12-Sep-2019.
Vulnerability notification to vendor via vendor provided web form: 12-Sep-2019 ,13-Sep-2019, 19-Sep-2019, 26-Sep-2019, no responds.
Submit exploit-db : 14-Oct-2019.


# Disclaimer
=============
The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise.
The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information.
The author prohibits any malicious use of security related information or exploits by the author or elsewhere.
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