Info

Last Modified

about 1 month ago

Percent Complete

100%

Disclosure

Aug 21, 2004

Discovery

Unknown

Dates

Exploit

Aug 21, 2004

Solution

Unknown

Keywords

PHP-Nuke module

Description

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.

Classification

Location: Remote/Network Access Required
Attack Type: Information Disclosure, Input Manipulation
Impact: Loss of Confidentiality, Loss of Integrity
Exploit: Exploit Available
Disclosure: OSVDB Verified
OSVDB: Web Related

Solution

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.