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[Full-disclosure] Element CMS script insertion vulnerability

edi.strosarvarnostne-novice.com
Date: Fri Jul 13 2007 - 20:41:29 CDT


=========================================================================
TeamIntell Security Advisory TISA2007-06-Public
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Element CMS "s" parameter script insertion vulnerability
=========================================================================

Release Date: 14.7.2007
Severity: Less critical
Impact: Cross-site scripting (XSS)
Status: Official patch not available (0-day)
Software: Element CMS
Vendor: http://www.element.si
                  http://www.elementcms.si
Disclosed: Edi Strosar (TeamIntell)

Description:
============

Element CMS, a full featured Slovenian content management
system, is prone to a cross-site scripting vulnerability
because the application fails to properly sanitize
user-supplied input.

Input passed to the "s" parameter in default.asp is not
properly sanitized before being used. This can be
exploited to insert arbitrary HTML and script code in a
user's browser session in context of an affected site.

The vulnerability is reported in all versions of Element
CMS.

Proof of Concept:
=================

http://demo2.element.si/default.asp?pID=search&mid=sl&s="><script>alert(String.fromCharCode(88,83,83))</script>

Solution:
=========

Vendor informed. Official patch not available.

Note: because of arrogant and unprofessional vendor's
response TeamIntell decided to release the advisory.

Contact:
========

Maldin d.o.o.
Trzaska cesta 2
1000 Ljubljana - SI

tel: +386 (0)590 70 170
fax: +386 (0)590 70 177
gsm: +386 (0)31 816 400
web: www.teamintell.com
e-mail: infoteamintell.com

Disclaimer:
===========

The content of this report is purely informational and
meant for educational purposes only. Maldin d.o.o. shall
in no event be liable for any damage whatsoever, direct or
implied, arising from use or spread of this information.
Any use of information in this advisory is entirely at
user's own risk.

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