CultBooking 2.0.4 (lang) Local File Inclusion Vulnerability

Vendor: Cultuzz Digital Media GmbH
Product web page: http://www.cultuzz.com
Affected version: 2.0.4

Summary: Open source hotel booking system (Internet Booking
Engine (IBE)). Via a central api called CultSwitch it is
possible to make bookings and set the actual availabilities
in the hotels pms. This is easy to install and easy to integrate
with full support.

Desc: CultBooking suffers from a local file inlcusion/disclosure
(LFI/FD) vulnerability when input passed thru the 'lang' parameter
to cultbooking.php script is not properly verified before being used
to include files. This can be exploited to include files from local
resources with directory traversal attacks and URL encoded NULL bytes.

~ Conditional on 'magic_quotes_gpc=off'.

Tested on: Microsoft Windows XP Professional SP3 (EN)
           Apache 2.2.14 (Win32)
           PHP 5.3.1
           MySQL 5.1.41

Vulnerability discovered by: Gjoko 'LiquidWorm' Krstic
                             liquidworm gmail com
                             Zero Science Lab - http://www.zeroscience.mk

Advisory ID: ZSL-2011-4988
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2011-4988.php

16.01.2011


Dork: "inurl:cultbooking.php"

http://1.1.1.2/cultbooking.php?lang=c%3A%5C%5Cboot.ini%00
http://1.1.1.2/cultbooking.php?lang=../../../boot.ini%00