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|                   noptrix.net - Public Security Advisory                    |
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Date:
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08/02/2011

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

Affected Software:
------------------
Software: Adium
Version: <= 1.4.2

Affected Platforms:
-------------------
Mac OS X (10.6.8, 10.6.7, maybe also other...)

Vulnerability Class:
--------------------
HTML/Javascript-Injection / 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.noptrix.net/tmp/adium_inject.png
    - http://www.noptrix.net/tmp/adium_inject2.png
    - http://www.noptrix.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

Solution:
---------
adium.im has to validate the input characters and sanitize the output.

Status:
-------
Adium hasn't fixed the issue yet.

Notes:
------
To the whole world: Funny thing: Anglophone and German media refer me as
Armenian in their Skype XSS articles, yet all the Turkish news sites insists
that I am Turkish. For the record, I am Armenian and my people have been
persecuted by Turkey for hundreds of years. Thanks.