[NT] Fastream NETFile FTP/Web Server HTTP HEAD DoS

From: SecuriTeam (support_at_securiteam.com)
Date: 09/08/05

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    To: list@securiteam.com
    Date: 8 Sep 2005 14:01:20 +0200

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      Fastream NETFile FTP/Web Server HTTP HEAD DoS


    " <http://www.fastream.com/netfileserver.htm> Fastream NETFile FTP/Web
    Server is a secure FTP server and Web-based file server combined together
    in one program. Our claim is that it is the "easiest to setup and
    administer server" on the Internet!"

    Due to improper handling of keepalive in HTTP HEAD requests, it is
    possible to cause a denial of service to Fastream NETFile FTP/Web Server.


    Vulnerable Systems:
     * Fastream NETFile FTP/Web Server 7.1.2 Professional

    Fastream NETfile FTP/Web Server improperly handles the timeout on
    "keepalive" connections after making a HEAD request to the web server.
    When a remote user sends a HEAD request, the web server doesn't close the
    connection with the client. This makes it possible for a remote user to
    use all the available connections and thus make the software deny service
    to other users.


    The information has been provided by <mailto:bratax@gmail.com> bratax ck.


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