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Simple one-file GuestBook 1.0



.:. Simple one-file guestbook 1.0 .:.

Date:
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August 08, 2006 

Vendor:
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http://www.xeroxer.com/index.php?page=3

Description:
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This is my simple one-file guestbook.
It's made of one .php file (the script) and one .txt file (the entrystorage 
file).
It uses no database just a flat textfile.
It is made so it's easy to include in any page.
It has admin login where you can edit and remove entrys.
Demo can be found at: 
http://php.xeroxer.com/simple_one-file_guestbook/demo/guestbook.php
Any help needed please mail me at: webmaster@xxxxxxxxxxx

Version:
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<= 1.0

Vulnerability(ies) / Exploit(s):
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I malicious people can Bypass Administrator Pannel to delete all of the 
messages in the GuestBook because there is no control
about admin credential.

PoC(s):
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An attacker can use this URL via the browser to delete all messages:

http://host/[path]/guestbook.php?id=4


Vendor Status:
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[August 08, 2006] Informed!

Solution:
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[August 08, 2006] No solution available from the vendor.

You can edit the source code and control the administratior credential.

Credit:
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omnipresent
omnipresent[at]email[dot]it
http://it.security.netsons.org