The 'PhotoADay' module for PHP-Nuke contains an input validation flaw that allows a remote cross site scripting attack. This flaw exists because the application does not validate the pad_selected variable submitted to the PhotoADay script. 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.

Currently, there are no known upgrades or patches to correct this issue. The vendor has been contacted. It is possible to correct the flaw by implementing the following workaround(s):

Modify the code:
unset($matches);
unset($loc);
if (preg_match("/([OdWo5NIbpuU4V2iJT0n]) /",
rawurldecode($loc=$_SERVER["QUERY_STRING"]), $matches)) {
die("YOU ARE SLAPPED BY <a href=\"http://nukecops.com\">NUKECOPS</a> BY
USING '$matches[1]' INSIDE '$loc'.");
}

to use strip_tags() like this:

unset($matches);
unset($loc);
if (preg_match("/([OdWo5NIbpuU4V2iJT0n]) /",
rawurldecode($loc=strip_tags($_SERVER["QUERY_STRING"])), $matches)) {
die("YOU ARE SLAPPED BY <a href=\"http://nukecops.com\">NUKECOPS</a> BY
USING '$matches[1]' INSIDE '$loc'.");
}

Alternativley disable use of the PhotoADay module.

• Security Tracker: 1011027
• Bugtraq ID: 11009
• Vendor URL: http://www.photoaday.net/ [ Link is 404 ]

• King Of Love - leaveskyhotmail.com - Q8Crackers Crew

We currently have no CVSS2 data on this vulnerability. Feel free to suggest it.