InvoicePlane 1.4.10 File Upload / Cross Site Scripting

`SEC Consult Vulnerability Lab Security Advisory < 20170523-0 >  
=======================================================================  
title: Arbitrary File Upload & Stored XSS  
product: InvoicePlane  
vulnerable version: 1.4.10  
fixed version: 1.5.2  
CVE number: -  
impact: High  
homepage: https://invoiceplane.com/  
found: 2017-04-10  
by: Jasveer Singh (Office Kuala Lumpur)  
SEC Consult Vulnerability Lab  
  
An integrated part of SEC Consult  
Bangkok - Berlin - Linz - Luxembourg - Montreal - Moscow  
Kuala Lumpur - Singapore - Vienna (HQ) - Vilnius - Zurich  
  
https://www.sec-consult.com  
  
=======================================================================  
  
Vendor description:  
-------------------  
"InvoicePlane is a self-hosted open source application for managing your  
quotes, invoices, clients and payments."  
  
Source: https://invoiceplane.com/  
  
  
Business recommendation:  
------------------------  
By exploiting the vulnerabilities documented in this advisory, an attacker can  
fully compromise the web server which has InvoicePlane installed. Potentially  
sensitive invoice data might get exposed through this attack.  
  
SEC Consult recommends not to attach InvoicePlane to the network until a  
thorough security review has been performed by security professionals and all  
identified issues have been resolved.  
  
  
Vulnerability overview/description:  
-----------------------------------  
1. Arbitrary File Upload  
An authenticated user can upload a malicious file to the webserver. It is  
possible for an attacker to upload a script which is able to compromise the  
webserver.  
  
2. Stored Cross Site Scripting  
This vulnerability allows an authenticated user to inject malicious client  
side script which will be executed in the browser of users if they visit  
the manipulated site.  
  
  
Proof of concept:  
-----------------  
1. Arbitrary File Upload  
Below URL is used to upload the malicious file through the attachment  
segment.  
  
URL : http://$DOMAIN/index.php/invoices/view/$INVOICE-ID  
  
  
2. Stored Cross Site Scripting  
The following parameters have been found to be vulnerable against  
stored cross site scripting. Furthermore, there exist many more  
vulnerable parameters.  
  
The following payload shows a simple alert message box:  
URL : http://$DOMAIN/index.php/clients/view/$Client-ID  
METHOD : POST  
PAYLOAD : client_name="onmouseover=prompt("XSS")>  
  
URL : http://$DOMAIN/index.php/index.php/users/form/$User-ID  
METHOD : POST  
PAYLOAD : user_name="onmouseover=prompt("XSS1")>  
  
  
Vulnerable / tested versions:  
-----------------------------  
InvoicePlane version 1.4.10 has been tested. This version was the latest  
at the time the security vulnerabilities were discovered.  
  
  
Vendor contact timeline:  
------------------------  
2017-04-11: Contacting vendor through [email protected]  
2017-04-11: Vendor requests security advisory to be shared over unencrypted  
channel.  
2017-04-23: Vendor released patch version 1.5.0 however not all  
vulnerabilities were fixed properly.  
2017-05-07: Patch (1.5.2) released by the vendor which fixes all issues  
2017-05-23: Public release of security advisory.  
  
  
Solution:  
---------  
Upgrade to InvoicePlane 1.5.2 as version 1.5.0 doesn't fix all the  
identified vulnerabilities:  
  
https://community.invoiceplane.com/t/topic/4258  
  
  
Workaround:  
-----------  
None  
  
  
Advisory URL:  
-------------  
https://www.sec-consult.com/en/Vulnerability-Lab/Advisories.htm  
  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
SEC Consult Vulnerability Lab  
  
SEC Consult  
Bangkok - Berlin - Linz - Luxembourg - Montreal - Moscow  
Kuala Lumpur - Singapore - Vienna (HQ) - Vilnius - Zurich  
  
About SEC Consult Vulnerability Lab  
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of new offensive and defensive technologies for our customers. Hence our  
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recommendation about the risk profile of new technologies.  
  
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EOF Jasveer Singh / @2017  
  
`