secuvera-SA-2017-03: Reflected Cross-Site-Scripting Vulnerabilities- in OCS Inventory NG ocsreports Web application

From: Simon Bieber <>
To: <>
Subject: secuvera-SA-2017-03: Reflected Cross-Site-Scripting Vulnerabilities- in OCS Inventory NG ocsreports Web application

Affected Products
   OCSInventory-ocsreports 2.4
   (older releases have not been tested) 
References (used for updates) (Release announcement of OCS Inventory 2.4.1)

   Open Computer and Software Inventory Next Generation (OCS inventory NG) is free software that enables users to inventory IT assets. (Source: Wikipedia)
   OCS Reports for OCS Inventory is a web application to manage the OCS Inventory Server and Clients. 
   The web application is prone to reflected Cross-Site-Scripting (XSS) attacks.

   An attacker is able to execute arbitrary (javascript) code within a victims' browser by luring a victim to click on a link containing malicious code 

Vulnerable Scripts:
   1) anonymous: USERID and Password field of login page are vulnerable
   2) logged in user: index.php: arbitrary supplied URL parameters will get included within a javascript block. 
   3) logged in user: index.php: parameter "prov" will get included within a hidden page form field
   1) Enter the following payload into login form: " onload="alert(42);
   2) http://<ip>/index.php?function=visu_search&prov=allsoft&value=somesoftware%&rk28e'-alert(1)-'js9gz=1
   3) http://<ip>/index.php?function=visu_search&prov=allsoftfrsk4'accesskey%3d'x'onclick%3d'alert(1)'%2f%2fqqy1d&value=<name_of_software>

   Install OCS Inventory Release 2.4.1 or newer. 
Disclosure Timeline:
   2017/12/15 vendor contacted, asked for security contact information
   2018/01/02 contacted vendor again after no answer was received so far
   2018/01/02 response of responsible contact 
   2018/01/22 Sent technical details
   2018/02/12 Developer replied proposing fix
   2018/03/28 Developer contacted us to announce the upcoming release
   2018/04/05 OCS Version 2.4.1 was released
   2018/08/09 Release of the security advisory
   Simon Bieber, secuvera GmbH
Thanks to:
   Michael Hermann, secuvera GmbH 
   for his support!
   Gilles Dubois and Damien Belliard, factorfx
   for fixing this issue!
   All information is provided without warranty. The intent is to provide informa-
   tion to secure infrastructure and/or systems, not to be able to attack or damage.
   Therefore secuvera shall not be liable for any direct or indirect damages that 
   might be caused by using this information. 

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