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Re: nestea2 and HP Jet Direct cards.
From: matt () SARATOGA ITS BOND EDU AU (Matt Carter)
Date: Mon, 11 May 1998 08:32:01 +1000

This is similar for the Bay networks/Xylogics Micro Annex ELS, Annex 2000,
and 4000 series and probably a lot more.

Running proff's 'strobe' on a bay/xylogics annex will result in instant
hanging of the annex, leave it go for 30 seconds, then come back to the
annex and you'll see load averages near the 100% mark.

For the duration of the strobe the device is rendered unusable.

On Sun, 10 May 1998, David LeBlanc wrote:

From: David LeBlanc <dleblanc () MINDSPRING COM>
Date: Sun, 10 May 1998 16:24:04 -0400
Subject: [BUGTRAQ]      nestea2 and HP Jet Direct cards.
Message-ID: < () mindspring com>

At 10:40 PM 5/7/98 -0700, Damon Petta wrote:

I have also tried bonk, boink, teardrop, overdrop and none of them seem to
have any effect on the printers.

You don't really have to do anything quite that sophisticated.  All you
have to do is make multiple connects to listening ports on them quickly.
Some sort of race condition.  If the port scanner you're using is remotely
efficient, up it goes.  I'm not surprised that they are vulnerable to more
complex attacks if their base IP stack can't even handle rapid-fire SYN
packets on different ports.

David LeBlanc
dleblanc () mindspring com

Matt Carter                   | Systems Management Group
Email: matt () bond edu au       | Bond University
Phone: +61 7 5595 1423        | University Drive
Fax:   +61 7 5595 1456        | Robina, QLD 4226

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