On Tuesday 03 November 2009 11:16, Jack Woehr wrote:
>Edmund R. MacKenty wrote:
>> .  I don't think the UID/GID can be re-used, as
>> your vendor controls their assignments for system accounts and useradd(8)
>> will not assign UID/GID values below 500
>
>That number-below-which is controlled by the contents of /etc/login.defs
>I believe, which is an editable text file, not a hard limit.

Correct.  But in order for the scenario you described to occur, one of the 
following must happen:

1) A superuser edits /etc/login.defs and sets SYSTEM_USER_MIN to zero or some 
other very low value, or

2) A superuser runs "useradd -r -u 40 cracker" and gives that account to a 
plain user.

Either scenario requires an irresponsible superuser.  Marcy does not fall into 
that category.
        - MacK.
-----
Edmund R. MacKenty
Software Architect
Rocket Software
275 Grove Street · Newton, MA 02466-2272 · USA
Tel: +1.617.614.4321
Email: m...@rs.com
Web: www.rocketsoftware.com  

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