Re: OPS$

"Deshpande, Kirti" wrote:
>
> We use REMOTE_OS_AUTHENT in many of our databases. I know we shouldn't do
> this, but we have to, and that's another topic...
>
> We also use a specific auth prefix.
>
> Now, can someone show me how a Windoze user, 'GOD' get in the database when
> I do not have a user, '<Auth_Prefix>GOD' in my database.
>
> I say, I have nothing to worry about this setup as long as 'GOD' user in my
> database is controlled appropriately via roles, grants, profile etc....
>
> Sure, if I had <auth_prefix>GOD in the database, I will be looking for
> another job....
> Right?
>
> - Kirti
>

The problem as I see it is that it's fairly easy to get the names of users on a database. The number of databases you can connect to using dbsnmp/dbsnmp or outln/outln is desperately high, and from there you can query ALL_USERS. I must say that I am truly hopeless with any Microsoft OS, so you could safely let me with admin rights on the box when I feel at my most mischievous. But imagine I come with Linux on my laptop, I plug (like many 'nomad' users often do) into your network, manage to connect (as a less-than-nothing user), check the user list, spot something looking like a prefix, and use this information to add with linuxconf a suitably named account to my machine? I am certain that in your case everything is correctly fenced, but I have met many many many databases where the standard in terms of grants was 'TO PUBLIC', and where database links were PUBLIC as well, and usually connected to the other database as the owner of most tables (even as DBA). IMHO, if you really want to be secure, you must first know Oracle and your environment well, and also audit sensitive information.

-- 
Regards,

Stephane Faroult
Oriole Ltd
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Stephane Faroult
  INET: sfaroult_at_oriole.com

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