OSEC

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RE: Disabling Cached Logon Credentials

From: Nick Duda (ndudaVistaPrint.com)
Date: Tue Dec 30 2003 - 14:36:08 CST


Even with physical access you (a hacker) want to do what you have to ,
leave and still be undetected. If a hacker is going to get to a physical
server only to change the admin password and do some hack (i.e. trojan),
I would find it silly because when the admin finds out that its not a
password he supplied, that system is as good as formatted. This is why
disbaling stuff like autoplay on cd roms is a good idea, and not to just
lock servers screensavers but rather logout.

I don't think disbaling cached logons is something to worry about if in
a secured data center, but merly a common practice for any security
professional (i.e. do the job right, or don't do it at all, don't
halfass when it comes to security)

- Nick
 

-----Original Message-----
From: dwr3ckhushmail.com [mailto:dwr3ckhushmail.com]
Sent: Tuesday, December 30, 2003 1:29 PM
To: focus-mssecurityfocus.com; full-disclosurelists.netsys.com
Subject: Disabling Cached Logon Credentials

Disabling cached logon credentials is on virtually every server
hardening checklist.

If you have your servers physically secured in a data center what is the
real benefit of disabling cached logon credentials?

Whenever a server is off the network, admins have to obtain the local
admin password. Depending on how you handle local RID=500 account
passwords this can add significantly to downtime when resolving issues.

Does anyone know of a way to exploit cached credentials over the wire?
 

If someone has physical access to a system they own it anyway:

http://home.eunet.no/~pnordahl/ntpasswd/

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