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Category:   Application (Forum/Board/Portal)  >   NukeET Vendors:   truzone.org
NukeET Input Validation Hole in 'security.php' Permits Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1013936
SecurityTracker URL:  http://securitytracker.com/id/1013936
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Updated:  May 12 2005
Original Entry Date:  May 11 2005
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): prior to 3.2
Description:   Lostmon and Suko reported a vulnerability in NukeET. A remote user can conduct cross-site scripting attacks.

The 'security.php' script does not properly validate user-supplied input in the 'codigo' variable. 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 NukeET 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 that will execute '<script>alert()</script><h1>XSS PoW@ !!!</h1>' is provided:

http://[target]/security.php?codigo=PHNjcmlwdD5hbGVydCgpPC9zY3JpcHQ+PGgxPlhTUyBQb1dAICEhITwvaDE+

The exploit string must be Base64 encoded.

The vendor was notified on May 9, 2005.

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the NukeET 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:   The vendor has issued a patch, available to registered users at:

http://www.truzone.org/modules.php?name=Projet&op=getit&iddow=77

Vendor URL:  www.truzone.org/ (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  NukeET 'codigo' variable cross site scripting


################################################
NukeET 'codigo' variable cross site scripting
vendor url:http://www.truzone.org
advisore:http://lostmon.blogspot.com/2005/05/
nukeet-codigo-variable-cross-site.html
Vendor confirmed : yes exploit available: yes
#################################################

NukeET Contains a flaw too that allows a remote cross site scripting
attack.This flaw exists because the application does not validate
'codigo' variable upon submission to the 'catalog.php'scripts.This=20
could allow a user to create a specially crafted URL that would
execute arbitrary code in a user's browser within the trust
relationship between the browser and the server,leading to a loss=20
of integrity.

bug found by Suko , investigate and reporter by Lostmon.

##########
versions
##########

prior to 3.2 afected

##########
solution:
##########

vendor patch

http://www.truzone.org/modules.php?name=3DProjet&op=3Dgetit&iddow=3D77

###########
timeline
###########

discovered: 9 may 2005
vendor notify: 9 may 2005
vendor response : 10 may 2005
vendor fix: 10 may 2005
disclosure: 10 may 2005


##########
exploit:
##########

'codigo' variable acepts base64 url encode , if we encode for example

<script>alert()</script><h1>XSS PoW@ !!!</h1>

in base64 this is:

PHNjcmlwdD5hbGVydCgpPC9zY3JpcHQ+PGgxPlhTUyBQb1dAICEhITwvaDE+

if we aded this base64 code the alert and de tag h1 is executed with
any problem.
http://[victim]/security.php?codigo=3D
PHNjcmlwdD5hbGVydCgpPC9zY3JpcHQ+PGgxPlhTUyBQb1dAICEhITwvaDE+


################ End ##################

thnx to estrella to be my ligth
thnx to all http://www.osvdb.org Team
thnx to all who day after day support me !!!
thnx to Suko "la paciencia es una virtud peke=F1o Jedy"

--
atentamente:

Lostmon (lostmon@gmail.com)
Web-Blog: http://lostmon.blogspot.com/
Data Mangler of: http://www.osvdb.org
--
La curiosidad es lo que hace mover la mente....
 
 


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