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  `´´`´\/´`nullsecurity team`´\/`´´`´\/`´``´\/  ``´```´```´´´´`´``0_o\/´´`´´

                          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 (or Exploit)|:

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