Re: AS400 user password (fwd)

["Leif Svalgaard" <leif@xxxxxxxx>]

They are not used afterwards and it is a simple matter to erase the content
and think that is precisely what IBM has done (will do) in the PTF to fix
this.

----- Original Message -----
From: William Washington III <w.washington@iols.net>
To: <MIDRANGE-L@midrange.com>
Sent: Saturday, June 10, 2000 2:08 PM
Subject: Re: AS400 user password (fwd)


> Are the buffers used for a legitimate purpose after login?  It seems to be
a
> simple matter for IBM to flush the buffers once the job has entered the
> subsystem.  Does SECLVL(50) help in any way?
>
> ----- Original Message -----
> From: "V. LeVeque" <vleveque@earthlink.net>
> To: <MIDRANGE-L@midrange.com>
> Sent: Saturday, June 10, 2000 12:25 AM
> Subject: Re: AS400 user password (fwd)
>
>
> > This is exactly the point of all those "petty" requirements of a C2
> > certification - to ensure that object reuse does not result in sensitive
> > information being leaked.  You know, why you shouldn't be able to view
> other
> > user's QTEMP and things of that sort.
> >
> > I hate to say "I told you so", but a lot of this difficult and seemingly
> > impractical security theory really DOES matter for us "just plain
business
> > systems folk"
> >
> > Be grateful this is an AS/400 and not Windows NT, or this code would be
> > posted throughout the Internet as we speak.  The only thing saving us
with
> > this is the relative lack of interest in the AS/400 by the hacking
> community.
> >
> >
> > At 07:59 PM 6/9/00 -0500, you wrote:
> > >From: William Washington III <w.washington@iols.net>
> > >> I'm sure the infamous 17-line RPG IV program is a call to one
> > >> of the service routines.  (But I haven't seen it... I could be wrong!)
> > >
> > >
> > >You are in fact wrong. It is much simpler than that. The signon
> > >program reads a screen buffer with your user ID and password
> > >you just typed. The contents of that buffer hangs around until
> > >signoff or another signon (when it will contain yet another
> > >password !). A general principle of secure working is the
> > >erase the contents of all buffers and variables as soon as
> > >they are no longer needed. IBM violated that simple principle.
> > >
> > >
> >
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