Document Title:
===============
Lepton v1.2.0 CMS - Multiple Web Vulnerabilities
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=626
Release Date:
=============
2012-06-22
Vulnerability Laboratory ID (VL-ID):
====================================
626
Common Vulnerability Scoring System:
====================================
4
Product & Service Introduction:
===============================
LEPTON is an easy-to-use but full customizable Content Management System (CMS). LEPTON enables you to run nearly all
the websites most others current CMS promise you but has the big advantage of extremely short learning and training
curves, and this is a great argument to those who work with LEPTON. LEPTON needs a MySQL database, the most common
database on webspaces. LEPTON is easily installed and started, and - what is really important - can easily be adapted
to fit the needs of nearly all web appearences. Besides many other features LEPTON got ...
easy to use backend
content input via wysiwyg-editors
multi-language-support
file and media management
design via template system
addons to extend cms
scaling access system
and much more...
(Copy of the Vendor Homepage: http://www.lepton-cms.org/english.php?lang=EN )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered multiple Web Vulnerabilities in the Lepton v1.2.0 Content Management System.
Vulnerability Disclosure Timeline:
==================================
2012-06-23: Public or Non-Public Disclosure
Discovery Status:
=================
Published
Exploitation Technique:
=======================
Remote
Severity Level:
===============
Medium
Technical Details & Description:
================================
Multiple persistent input validation vulnerabilities are detected in iScripts Reserve Logic v1.2 Booking Content Management System.
The bugs allow remote attackers to implement/inject malicious script code on the application-side (persistent). The persistent
vulnerabilities are located in the modify groups, add user, listing, Profile & add page module(s) with the bound vulnerable parameters
Groupname, Username, Display Name & list_page_title. Exploitation requires low user inter action & privileged application user account.
Successful exploitation of the vulnerability can lead to session hijacking (admin) or stable (persistent) context manipulation.
Vulnerable Module(s):
[+] Modify Groups - Group
[+] Access - Add User
[+] Preferences - My Settings - Profile
[+] Add Page
Vulnerable Parameter(s):
[+] Group Name
[+] Username
[+] Display Name
[+] list_page_title & url (modify_link)
Proof of Concept (PoC):
=======================
The persistent web vulnerabilities can be exploited by remote attacker with privileged user account or without user account.
To exploit the vulnerability low or medium user inter action is required. For demonstration or reproduce ...
Review: Access - Add User > Username
<form name="user" action="http://demo.opensourcecms.com/lepton/admins/users/add.php?leptoken=462c08f506b7992a08a40z1340321337" method="post" class="">
<input name="user_id" value="" type="hidden">
<input name="username_fieldname" value="username_Age0ll2" type="hidden">
<p>Minimum length for user name: 3 chars, Minimum length for Password: 6 chars!</p>
<table 0"="" border="0" cellpadding="0 cellspacing=" width="100%">
<tbody><tr>
<td width="150">Username:</td>
<td class="value_input">
<input name="username_Age0ll2" value="\" type="text"><[PERSISTENT INJECTED SCRIPT CODE])' <"="">
</td>
</tr>
<tr>
<td>Password:</td>
<td class="value_input">
<input type="password" name="password" value=""><[PERSISTENT INJECTED SCRIPT CODE]) <" />
</td>
</tr>
<tr>
<td>Re-type Password:</td>
<td class="value_input">
<input type="password" name="password2" value=""><[PERSISTENT INJECTED SCRIPT CODE]<" />
</td>
URL: http://127.0.0.1:8080/lepton/admins/users/index.php?leptoken=0644c1632f2de642c422az1340321400
Review: Preferences - My Settings - Profile > Displayname
<optgroup label="Pages"><option value="pages/modify.php?page_id=2" selected="selected">
"><[PERSISTENT INJECTED SCRIPT CODE]<</option>
<option value="pages/modify.php?page_id=1">hello world</option>
</optgroup></select>
URL: http://127.0.0.1:8080/lepton/admins/preferences/index.php?leptoken=43842ae95ec290c5dc346z1340321767
Review: Modify Groups - Group
<table border="0" cellpadding="2" cellspacing="0" width="100%">
<tbody><tr>
<td width="150">Name:</td>
<td>
<input name="group_name" maxlength="255" type="text"><[PERSISTENT INJECTED SCRIPT CODE]' <"="" style="width: 98%;">
</td>
URL: http://127.0.0.1:8080/lepton/admins/groups/groups.php?leptoken=b966d35413402c86743a7z1340321327
Review: Add Page - Listing (url or link)
<img src="index.php2-Dateien/visible_16.png" alt="Visibility: Public" class="page_list_rights">
<span class="modify_link">"><[PERSISTENT INJECTED SCRIPT CODE]") <</span></a>
</td>
<td class="list_page_title">"><[PERSISTENT INJECTED SCRIPT CODE]") <</td>
<td class="list_page_URL">/hello-world/[PERSISTENT INJECTED SCRIPT CODE]28vl29.php</td>
<td class="list_page_id">2</td>
URL: http://127.0.0.1:8080/lepton/admins/pages/index.php?leptoken=aa02a5f10be74d8702542z1340321827
Security Risk:
==============
The security risk of the persistent input validation vulnerabilities are estimated as medium.
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm@vulnerability-lab.com)
Vulnerability Laboratory [Research Team] - Ibrahim El-Sayed [storm] (strom@vulnerability-lab.com)
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=========================
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