[UNIX] MySQLguest Arbitrary Code Injection

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To: list@securiteam.com
Date: 5 Oct 2004 11:44:35 +0200

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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  MySQLguest Arbitrary Code Injection
------------------------------------------------------------------------

SUMMARY

 <http://www.allwebscripts.com> MySQLguest by "Allwebscripts is a
guestbook script that uses MySQL to store messages".

Allwebscripts' MySQLguest is vulnerable to a source code injection
vulnerability in the AWSguest.php page. The vulnerability occurs as fields
in the AWSguest.php page do not adequately sanitize HTML, script or PHP
code.

DETAILS

In the AWSguest.php page, any of the following fields can be used to
inject arbitrary HTML, JavaScript or PHP: "Name", "Email", "Homepage" and
"Comments".

Exploit:
E-mail: <?php echo <p>Hello World</p>
Homepage: <script language=javascript>alert ("Messagebox")
Comments: <IFRAME SRC=www.computerknights.org>

ADDITIONAL INFORMATION

The information has been provided by BliZZard.

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