SMF Board v2.0.2 - Multiple Web Vulnerabilities
Common Vulnerability Scoring System:
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/ )
The Vulnerability Laboratory Research Team discovered multiple web vulnerabilities in the official SMF v2.0.2 (Forum Application).
2012-06-23: Public or Non-Public Disclosure
Product: Simple Machines Forum v2.0.2
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.
[+] Package Manager > Download New Packages > FTP Information Required
[+] Smiley Sets > Add
[+] Newsletter > Add
[+] My Community > Administration Center > Membergroups > Edit Membergroups
[+] Local path to SMF & Username [Packages]
[+] Name of emails
[+] Name & Group Title
Proof of Concept:
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)
<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"
<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">
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="">
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])' <"="">
<br class="clear" />
Review: Edit Membergroups & User/Groups Listing
<h3 class="catbg">Edit Membergroup - "><[PERSISTENT SCRIPT CODE])' <"=""><[PERSISTENT SCRIPT CODE]) <"
The security risk of the persistent input validation vulnerabilities are estimated as medium(+).
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (firstname.lastname@example.org)
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Smf Board V2.0.2 - Multiple Web Vulnerabilitiessmf board v2.0.2 - multiple w
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