RE: Possible Intrusion Attempt?
From: Whiteside, Larry [contractor] (BAE14_at_SPHQ.SSP.NAVY.MIL)
Date: 05/23/03
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Date: Fri, 23 May 2003 14:46:25 -0400 To: "Rob Shein" <shoten@starpower.net>, "Matt LaFelero" <ramstryke@yahoo.com>
What mail server do you use? Exchange/Outlook will allow you to convert all html email to plaintext before the user receives it. It can be done at the client or the server. People will still be able to receive email from everyone, it's just that html email will be converted to plaintext before the user receives it. It doesn't adversely affect anyone.
L
***************************
Larry Whiteside Jr.
Sr. Security Engineer
-----Original Message-----
From: Rob Shein [mailto:shoten@starpower.net]
Sent: Friday, May 23, 2003 2:34 PM
To: Whiteside, Larry [contractor]; 'Matt LaFelero'
Cc: incidents@securityfocus.com
Subject: RE: Possible Intrusion Attempt?
I'm a little fuzzy about this part...how do you prevent people from
accepting HTML mail, and considering how many mail clients out there send it
by default, what do you do when all of a sudden a large percentage of people
can't email you anymore?
-----Original Message-----
From: Whiteside, Larry [contractor] [mailto:BAE14@SSP.NAVY.MIL]
Sent: Thursday, May 22, 2003 3:31 PM
To: Matt LaFelero
Cc: incidents@securityfocus.com
Subject: RE: Possible Intrusion Attempt?
<snip>
my 2 cents:
You should first stop allowing HTML email. That is one of the easiest ways
for arbitrary code to be executed on your host. Then you should revamp your
security program to teach your users not to open things from unknown
sources. As long as you allow HTML email, you can be subject to this type of
attack.
<snip>
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