Educause Security Discussion mailing list archives

Re: The value of 'least privilege'


From: "Jeffrey I. Schiller" <jis () MIT EDU>
Date: Tue, 30 Mar 2010 12:25:37 -0400

Of course there is a middle ground. People in general should run without
administrator privileges (even people who know what they are doing!).
But that doesn't mean that they shouldn't have access to a separate
account with privileges which they use *occasionally* only to install
software and other tasks that require privilege.

In this case you don't have to wait, and you are also protected from a
significant amount of malware.

Of course the trick is for people to avoid becoming lazy and just
running with privileges all the time... Human nature and all...

                        -Jeff

On 03/30/2010 10:46 AM, randy marchany wrote:
While I agree that limiting administrative rights is a good thing,
sites need to answer accurately the following questions:

1. How long does it take your IT staff to install software that an end
user needs?
2. How long does it take your IT staff to check such software for
security issues? Presumably, this is the real reason why end user
aren't allowed to install software. If your IT staff doesn't check
software for security issues, they can make the same mistake. Do your
admins even check for security problems with vendor software? I
suspect it's not a thorough check.

If the answers to the above questions are "long" and an end user needs
the software ASAP (who doesn't?), then the end user will find ways to
bypass this restriction in order to get the job done. Having a timely
software installation process is critical to the success of this
security solution. No sysadmin can anticipate what software is needed
at any given point in time.

I'm curious to see what the answers are to the above questions. My
informal survey answers range from 1 day (ok) to 2 weeks (not ok).

-Randy Marchany
VA Tech IT Security Office

-- 
========================================================================
Jeffrey I. Schiller
MIT Network Manager/Security Architect
PCI Compliance Officer
Information Services and Technology
Massachusetts Institute of Technology
77 Massachusetts Avenue  Room W92-190
Cambridge, MA 02139-4307
617.253.0161 - Voice
jis () mit edu
http://jis.qyv.name
========================================================================

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