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Category:   Application (Calendar)  >   WebCalendar Vendors:   Knudsen, Craig
WebCalendar Include File Bug in 'includedir' Parameter Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1014849
SecurityTracker URL:  http://securitytracker.com/id/1014849
CVE Reference:   CVE-2005-2717   (Links to External Site)
Updated:  Jun 8 2008
Original Entry Date:  Sep 3 2005
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 1.0.1
Description:   A vulnerability was reported in WebCalendar. A remote user can execute arbitrary code on the target system.

The 'includes/functions.php' does not properly initialize the 'includedir' parameter. A remote user can supply a specially crafted URL to cause the target system to include and execute arbitrary PHP code from a remote location. The PHP code, including operating system commands, will run with the privileges of the target web service.

Impact:   A remote user can execute arbitrary PHP code and operating system commands on the target system with the privileges of the target web service.
Solution:   The vendor has issued a fixed version (1.0.1), available at:

http://www.k5n.us/webcalendar.php?topic=Download

Vendor URL:  www.k5n.us/webcalendar.php (Links to External Site)
Cause:   Input validation error, State error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


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