[UNIX] paBox Cross Site Scripting

From: SecuriTeam (support_at_securiteam.com)
Date: 03/22/05

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Date: 22 Mar 2005 18:00:25 +0200

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      paBox Cross Site Scripting
    ------------------------------------------------------------------------

    SUMMARY

    " <http://www.phparena.net/pabox.php> paBox is a PHP/mySQL shoutbox script
    (Also known as a tagboard.) You can add it to your site and visitors can
    post new messages, it is similar to a guestbook."

    paBox is vulnerable to a cross site scripting vulnerability due lack of
    validation of user provided input.

    DETAILS

    Vulnerable Systems:
     * paBox version 2.0

    The parameter in the form that lets you select which 'smilie' to use as an
    icon for your post is prone to a script injection attack.

    The specific parameter is:
    <INPUT type=radio CHECKED value="wink.gif" name=posticon>

    Where wink.gif become the value of the SRC attribute of the <img> tag when
    your post is submitted.

    By altering the value of wink.gif, or adding another instance of this
    parameter, its possible to inject malicious code into the value of the
    parameter, for example:
    <INPUT type=radio CHECKED
    value=""><script>document.write(document.cookie);</script>"
    name=posticon>click me

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:Sean@sage-web.com> Rift.

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