Title: Netautor Professional 5.5.0 (goback) XSS Vulnerability
Advisory ID: ZSL-2010-4964
Type: Remote
Impact: Cross-Site Scripting
Risk: (2/5)
Release Date: 17.09.2010

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.
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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.

Description

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.

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[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 );

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Vendor

/digiconcept/ - http://www.digiconcept.net

Affected Version

Netautor Professional 5.5.0
Digital Workroom 5.3.1

Tested On

Microsoft Windows XP Professional 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.

PoC

napro_xss.txt

Credits

Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>

References

[1] http://www.packetstormsecurity.org/filedesc/ZSL-2010-4964.txt.html
[2] http://securityreason.com/wlb_show/WLB-2010090084
[3] http://www.securityfocus.com/bid/43290
[4] http://secunia.com/advisories/41475
[5] http://osvdb.org/show/osvdb/68128
[6] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-3489

Changelog

[17.09.2010] - Initial release
[18.09.2010] - Added reference [2] and [3]
[21.09.2010] - Added reference [4]
[22.09.2010] - Added reference [5]
[28.09.2010] - Added reference [6]

Contact

Zero Science Lab

Web: http://www.zeroscience.mk
e-mail: lab@zeroscience.mk