Arbitrary File Upload & Stored XSS

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


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




Vendor description:


"InvoicePlane is a self-hosted open source application for managing your

quotes, invoices, clients and payments."





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



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


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


PAYLOAD : client_name="onmouseover=prompt("XSS")>


URL : http:// $DOMAIN/index.php/index.php/users/form/$User-ID


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

2017-04-11: Vendor requests security advisory to be shared over unencrypted


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.





Upgrade to InvoicePlane 1.5.2 as version 1.5.0 doesn't fix all the

identified vulnerabilities:








Advisory URL:






SEC Consult Vulnerability Lab


SEC Consult

Bangkok - Berlin - Linz - Luxembourg - Montreal - Moscow

Kuala Lumpur - Singapore - Vienna (HQ) - Vilnius - Zurich


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EOF Jasveer Singh / @2017