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                                                     /___/ team

                          PUBLIC SECURITY ADVISORY
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TITLE
=====

Adium - HTML/Javascript - Cross Site Scripting Vulnerability


AUTHOR
======

noptrix


DATE
====

08-02-2011


VENDOR
======

Adium - http://www.adium.im/


AFFECTED PRODUCT
================

Adium in version <= 1.4.2


AFFECTED PLATFORMS
==================

Mac OS X (10.6.8, 10.6.7, maybe other also...)


VULNERABILITY CLASS
===================

Cross Site Scripting


DESCRIPTION
===========

Adium suffers from a persistent HTML/Javascript injection / Cross-Site Scripting
vulnerability due to a lack of input validation and output sanitization of
filenames.


PROOF OF CONCEPT
================

The following HTML/Javascript payload can be used as a filename to trigger the
described vulnerability:

--- SNIP ---

sh3ll$ echo "123" > \"\>\<body\>\<h1\>0x90trix\ pwns\ -\ XSS\ POWER\ \<iframe\ \src\=\"www.google.com\"\ style\=\"background-color\:\ green\".gif

--- SNIP ---

For a PoC demonstration see:

    [+] http://www.nullsecurity.net/tmp/adium_inject.png
    [+] http://www.nullsecurity.net/tmp/adium_inject2.png
    [+] http://www.nullsecurity.net/tmp/adium_inject3.png


IMPACT
======

An attacker could for example inject HTML/Javascript code and redirect/phish any
users of Adium. With some time, creativity, fantasy and good music, an attacker
could leverage the vulnerability to increase the attack vector to the underlying
software and operating system of the victim.


THREAT LEVEL
============

Medium - High


STATUS
======

Fixed.


DISCLAIMER
==========

nullsecurity.net hereby emphasize, that the information which is published here are
for education purposes only. nullsecurity.net does not take any responsibility for
any abuse or misusage!

                Copyright (c) 2011 - nullsecurity.net