phpCOIN v1.2.2 XSS vuln.

phpCOIN v1.2.2 XSS vuln.

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Vuln. discovered by : r0t
Date: 28 march 2006
vendor:http://www.phpcoin.com/
affected versions:V.1.2.2 and prior
orginal advisory:http://pridels.blogspot.com/2006/03/phpcoin-v122-xss-vuln.html
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Vuln. Description:

phpCOIN contains a flaw that allows a remote cross site scripting
attack. This flaw exists because input passed to "fs" paremeter in
"mod.php" and "mod_print.php" isn't properly sanitised before being
returned to the user.
This could allow a user to create a specially crafted URL that would
execute arbitrary code in a user's browser within the trust
relationship between the browser and the server, leading to a loss of
integrity.

example:

/mod_print.php?mod=helpdesk&sb=&so=&fb=&fs=[XSS]
/mod.php?mod=orders&mode=view&sb=1&so=A&fb=&fs=[XSS]

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Solution:
Edit the source code to ensure that input is properly sanitised.
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More information @ unsecured-systems.com/forum/