Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri ([email protected])VULNERABLE:624
Document Title:
===============
SMF Board v2.0.2 - Multiple Web Vulnerabilities
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=596
Release Date:
=============
2012-06-25
Vulnerability Laboratory ID (VL-ID):
====================================
624
Common Vulnerability Scoring System:
====================================
4.1
Product & Service Introduction:
===============================
Simple Machines Forum — SMF in short — is a free, professional grade software package that allows you to set up
your own online community within minutes. Its powerful custom made template engine puts you in full control of
the layout of your message board and with our unique SSI - or Server Side Includes - function you can let your
forum and your website interact with each other. SMF is written in the popular language PHP and uses a MySQL database.
It is designed to provide you with all the features you need from a bulletin board while having an absolute minimal
impact on the resources of the server. SMF is the next generation of forum software - and best of all it is and
will always remain completely free!
(Copy of the Vendor Homepage: http://www.simplemachines.org/ )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered multiple web vulnerabilities in the official SMF v2.0.2 (Forum Application).
Vulnerability Disclosure Timeline:
==================================
2012-06-23: Public or Non-Public Disclosure
Discovery Status:
=================
Published
Affected Product(s):
====================
SMF
Product: Simple Machines Forum 2.0.2
Exploitation Technique:
=======================
Remote
Severity Level:
===============
Medium
Technical Details & Description:
================================
Multiple persistent input validation vulnerabilities are detected in the official SMF v2.0.2 (Board|Forum Application) CMS.
The bugs allow remote attackers to implement/inject malicious script code on the application-side (persistent). The persistent
vulnerabilities are located in the package manager, smiley sets, newsletter and edit members or groups with the vulnerable bound
post parameters local path url, username, url, emails & title. Exploitation requires low user inter action & privileged application
user account. Successful exploitation of the vulnerability can lead to session hijacking (admin/mod/user) or stable (persistent)
manipulation of the web application context.
Vulnerable Section(s):
[+] Package Manager > Download New Packages > FTP Information Required
[+] Smiley Sets > Add
[+] Newsletter > Add
[+] My Community > Administration Center > Membergroups > Edit Membergroups
Vulnerable Module(s):
[+] Local path to SMF & Username [Packages]
[+] URL
[+] Name of emails
[+] Name & Group Title
Proof of Concept (PoC):
=======================
The persistent input validation vulnerability can be exploited by remote attacker with local low privileged user account & low required
user inter action. For demonstration or reproduce ...
Review: Package Manager > Download New Packages > FTP Information Required (Listing)
<dd>
<input size="30" name="ftp_server" id="ftp_server" type="text"><[PERSISTENT SCRIPT CODE]' <"="" class="input_text">
<label for="ftp_port">Port: </label>
<input type="text" size="3" name="ftp_port" id="ftp_port" value="21"
class="input_text" />
... or
<dd>
<input size="50" name="ftp_path" id="ftp_path" value="public_html/demo/smf "
type="text"><[PERSISTENT SCRIPT CODE])' <"="" style="width: 99%;" class="input_text">
</dd>
</dl>
<div class="righttext">
URL: http://127.0.0.1:1339/smf/index.php?action=admin;area=packages;sa=packageget;get;f5073d7837d8=5a2bdd540a245be265f26c102fff9626
Review: Smiley Sets > Add
<tr class="windowbg" id="list_smiley_set_list_0">
<td style="text-align: center;"></td>
<td class="windowbg">Akyhne's Set</td>
<td class="windowbg">"><[PERSISTENT SCRIPT CODE]' <="" <strong="">
akyhne</strong>/...</td>
URL: http://127.0.0.1:1339/smf/index.php?action=admin;area=smileys;sa=modifyset;set=2
Review: Newsletter > Add
<input name="email_force" value="0" type="hidden">
<input name="total_emails" value="1" type="hidden">
<input name="max_id_member" value="13" type="hidden">
<input name="groups" value="0,1,2,3" type="hidden">
<input name="exclude_groups" value="0,1,2,3" type="hidden">
<input name="members" value="" type="hidden">
<input name="exclude_members" value="" type="hidden">
<input name="emails" value="" type="hidden"><[PERSISTENT SCRIPT CODE])' <"="">
</form>
</div>
<br class="clear" />
</div>
URL: http://127.0.0.1:1339/smf/index.php?action=admin;area=news;sa=mailingmembers;b74f235ec=2b30f2b9aad6e26815e1c18594922b37
Review: Edit Membergroups & User/Groups Listing
<h3 class="catbg">Edit Membergroup - "><[PERSISTENT SCRIPT CODE])' <"=""><[PERSISTENT SCRIPT CODE]) <"
><ifram
</h3>
</div>
<div class="windowbg2">
<span class="topslice"><span></span></span>
URL: http://127.0.0.1:1339/smf/index.php?action=admin;area=membergroups;sa=index;b74f235ec=2b30f2b9aad6e26815e1c18594922b37
URL: http://127.0.0.1:1339/smf/index.php?action=admin;area=membergroups;sa=add;b74f235ec=2b30f2b9aad6e26815e1c18594922b37
Security Risk:
==============
The security risk of the persistent input validation vulnerabilities are estimated as medium(+).
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri ([email protected])
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=========================
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