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Category:   Application (Calendar)  >   Horde Kronolith Vendors:   Horde Project
Horde Kronolith Input Validation Hole in 'addevent.php' Permits Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1019934
SecurityTracker URL:  http://securitytracker.com/id/1019934
CVE Reference:   CVE-2008-1974   (Links to External Site)
Updated:  May 9 2008
Original Entry Date:  Apr 28 2008
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 2.1.8
Description:   A vulnerability was reported in Horde Kronolith. A remote user can conduct cross-site scripting attacks.

The add event screen does not properly filter HTML code from user-supplied input in the 'url' parameter before displaying the input. 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 Horde Application Framework 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]/horde/kronolith/addevent.php?timestamp=1208932200&url=%22%3E%3CScript%3Ealert('Aria-Security%20Team (Persian Security Team)')%3C/script%3E

The original advisory is available at:

http://forum.aria-security.com/showthread.php?t=49

The-0utl4w from Aria-Security Team reported this vulnerability.

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the Horde Application Framework 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:   The vendor has issued a fixed version (2.1.8), available at:

http://www.horde.org/download/app/?app=kronolith

Vendor URL:  www.horde.org/kronolith/ (Links to External Site)
Cause:   Input validation error

Message History:   None.


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