Netautor Professional 5.5.0 (goback) XSS Vulnerability


Vendor: /digiconcept/
Product web page: http://www.digiconcept.net
Affected version: 5.5.0 and DW 5.3.1


Summary: Netautor Professional is an application server and
development environment. Netautor Professional was developed
to serve the practical needs of users, and was continuously
advanced.
--
Digital Workroom is a well proven and time-tested Content Management
System. It`s based on also digiconcept`s developed Application Server
"Netautor Professional" and PHP 5. The standard functional range covers
the majoritarian needs on Internet- and Intranet environments for publication
and communication.


Desc: Netautor Professional v5.5.0 suffers from a XSS vulnerability because
input passed via the "goback" parameter to login2.php script is not properly
sanitised before being returned to the user. This can be exploited to execute
arbitrary HTML and script code in a user's browser session in context of an
affected site.


----------------------------- [FILE] :: [LINE#] :: [STRING] -----------------------------

\ROOT\digitalworkroom\exports\DW_5.3\mlayouts_262527331.xml :: 532 :: unset($GLOBALS['goback']);
\ROOT\digitalworkroom\exports\DW_5.3\mlayouts_262527331.xml :: 536 :: if(!empty($GLOBALS['goback'])) $values['USER_TARGET'][0] = $GLOBALS['goback'];
\ROOT\digitalworkroom\exports\DW_5.3\mlayouts_262527331.xml :: 575 :: /* Auf GLOBALS['goback'] von NPF_SECURE reagieren*/
\ROOT\digitalworkroom\exports\DW_5.3\mlayouts_262527331.xml :: 661 :: <?php if (empty( $GLOBALS['goback'])): ?>
\ROOT\netautor\napro4\home\login2.msk :: 49 :: <input type="hidden" name="goback" value="<?php echo($goback); ?>" >
\ROOT\netautor\napro4\home\login2.php :: 38 :: if(empty($goback)) $goback = $USER->get_feature_value('initial_doc');
\ROOT\netautor\napro4\include\functions\users.fnc :: 822 :: if (!strpos($url,'&goback=')) $url.='&goback='.rawurlencode($PHP_SELF);
\ROOT\netautor\napro4\include\npf_lib\npf_special.fnc :: 155 :: $redirect.=( strpos($redirect,'?') ? '&' : '?' ).'goback='.rawurlencode( $REQUEST_URI );

-----------------------------------------------------------------------------------------


Tested on: MS WinXP Pro SP3 (EN)
           PHP 5.3.0
           MySQL 5.1.36
           Apache 2.2.11 (Win32)


Vendor status: [14.09.2010] Vulnerability discovered.
               [15.09.2010] Contact with the vendor.
               [17.09.2010] No reply from vendor.
               [17.09.2010] Public advisory released.


Vulnerability discovered by: Gjoko 'LiquidWorm' Krstic
                             liquidworm gmail com
                             Zero Science Lab - http://www.zeroscience.mk


Advisory ID: ZSL-2010-4964
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2010-4964.php


PoC:

 http://10.0.0.17/netautor/napro4/home/login2.php?goback=%22%3Cscript%3Ealert%28document.location%29%3C/script%3E