Security Basics mailing list archives
RE: Spying in a corporate environment
From: "Craig Wright" <Craig.Wright () bdo com au>
Date: Sat, 24 Nov 2007 08:21:09 +1100
There are a couple ways to look at this issue. It is possible to restrict the "local admin user". However, local admin rights enable you to setup a service or process that runs as system. System rights can override any and all GPO imposed restrictions and allow direct memory rewriting and the injection of dll's (as per debug privilege - even if this is removed from the local admin). Setting restrictions on local admin makes life a little more difficult for the user/attacker, but it by no means stops them all together. Regards, Craig S Wright (GSE-Compliance) Craig Wright Manager of Information Systems Direct : +61 2 9286 5497 Craig.Wright () bdo com au +61 417 683 914 BDO Kendalls (NSW) Level 19, 2 Market Street Sydney NSW 2000 GPO BOX 2551 Sydney NSW 2001 Fax +61 2 9993 9497 www.bdo.com.au Liability limited by a scheme approved under Professional Standards Legislation in respect of matters arising within those States and Territories of Australia where such legislation exists. The information in this email and any attachments is confidential. If you are not the named addressee you must not read, print, copy, distribute, or use in any way this transmission or any information it contains. If you have received this message in error, please notify the sender by return email, destroy all copies and delete it from your system. Any views expressed in this message are those of the individual sender and not necessarily endorsed by BDO Kendalls. You may not rely on this message as advice unless subsequently confirmed by fax or letter signed by a Partner or Director of BDO Kendalls. It is your responsibility to scan this communication and any files attached for computer viruses and other defects. BDO Kendalls does not accept liability for any loss or damage however caused which may result from this communication or any files attached. A full version of the BDO Kendalls disclaimer, and our Privacy statement, can be found on the BDO Kendalls website at http://www.bdo.com.au or by emailing administrator () bdo com au. BDO Kendalls is a national association of separate partnerships and entities. ________________________________ From: listbounce () securityfocus com on behalf of Col Sent: Sat 24/11/2007 3:19 AM To: Ansgar -59cobalt- Wiechers Cc: security-basics () securityfocus com Subject: Re: Spying in a corporate environment On Nov 23, 2007 3:08 PM, Ansgar -59cobalt- Wiechers <bugtraq () planetcobalt net> wrote: <snip>
However, while being logged into the local machine instead of the domain domain policies are not re-applied. An administrator can now manually change/remove those policies. At least AFAICS. Someone correct me if I'm wrong. Regards Ansgar Wiechers
Administrators can always access the registry and update whatever they like, getting the settings re-applied by GPO the next time it runs (every 90 mins or so). I'm pretty sure the GUI doesn't let you do what you describe, in fact I just logged into my desktop as local admin and I cannot edit the WSUS or Firewall rules as they are controlled by GPO. Of course there is a registry key to stop all GPO processing on a client - this includes password policy, complex passwords the lot... None of this is a big problem, as long as our users are not technical! :) I have enough information to go looking for a tool, in fact I have someone writing something for me that will address the USB memory stick question, the others are covered by the 5 different tools I've had recommended on this list. Thanks for all the replies, I'm well aware of the issues we face because the CIO wants everyone to have admin rights its a daily discussion in our office :) Cheers. Colin.
Current thread:
- Re: Spying in a corporate environment, (continued)
- Re: Spying in a corporate environment Ansgar -59cobalt- Wiechers (Nov 21)
- RE: Spying in a corporate environment Mario DeBono (Nov 22)
- Re: Spying in a corporate environment Ansgar -59cobalt- Wiechers (Nov 22)
- Re: Spying in a corporate environment Tremaine Lea (Nov 22)
- RE: Spying in a corporate environment Mario DeBono (Nov 22)
- Re: Spying in a corporate environment Ansgar -59cobalt- Wiechers (Nov 22)
- Re: Spying in a corporate environment Big Joe Jenkins (Nov 23)
- Re: Spying in a corporate environment Ansgar -59cobalt- Wiechers (Nov 23)
- Re: Spying in a corporate environment Big Joe Jenkins (Nov 23)
- Re: Spying in a corporate environment Col (Nov 23)
- RE: Spying in a corporate environment Craig Wright (Nov 23)
- Re: Spying in a corporate environment Col (Nov 21)
- Re: Spying in a corporate environment Tremaine Lea (Nov 27)