Re: QTEMP in LIBL (Was Re: OVRDBF problem or maybe itisearly Alzheimer's -- WDSCI-L

At previous job sites, QTEMP always seemed to be the norm at the top of thelist. However, at this site, they have it at the bottom. When asked why Iwas referred to this little article at Midrange...


Proper Use of QTEMP



Hey, Ted:

In the article, "Suggestions for a Temporary Library," the author writes thefollowing statement: "...the top of the library list. QTEMP is alreadythere."

So many sites put QTEMP at the top of the library list to save qualifyingfile names with QTEMP. I have always felt that this exposes a potentialsecurity risk. This is mainly for reasons that might never happen, but, ifdamage can be done, some day it is bound to happen. For example, a userusing Query/400 could easily create a file in QTEMP that has the same nameas a file elsewhere in the library list. A subsequent program mightreference the file in QTEMP rather than the one it should. Subsequentscenarios range from a harmless program crash to accidental or evendeliberate file corruption.

To get around this, I suggest that QTEMP should ALWAYS be placed at thebottom of the library list and that references to files in QTEMP shouldALWAYS be hard coded.


FWIW,

Gregg

----- Original Message -----From: "Holden Tommy" <Tommy.Holden@xxxxxxxxxxxxxxxxx>

To: "Websphere Development Studio Client for iSeries" <wdsci-l@xxxxxxxxxxxx>
Sent: Wednesday, July 12, 2006 2:42 PM

Subject: Re: [WDSCI-L] QTEMP in LIBL (Was Re: OVRDBF problem or maybeitisearly Alzheimer's

Ummm...
They can only place a rogue object in their current job's QTEMP....so
how is that a security risk...you'll STILL know who did what...


Thanks,
Tommy Holden


-----Original Message-----
From: wdsci-l-bounces@xxxxxxxxxxxx [mailto:wdsci-l-bounces@xxxxxxxxxxxx]
On Behalf Of Alan G. Campin
Sent: Wednesday, July 12, 2006 2:27 PM
To: wdsci-l@xxxxxxxxxxxx
Subject: [WDSCI-L] QTEMP in LIBL (Was Re: OVRDBF problem or maybe it
isearly Alzheimer's

This brings up a question I have wondered about.

I also always thought that QTEMP should be at the top of the user

portion

of the library list.  What is the logic for placing it at the end of

the

list instead of the beginning?


I suspect this discussion should be in Midrange-L but here goes.

I always thought that it should be at the top too until recently
discussing issue with my boss and he brought up point that having at the
top introduces security risks. Someone can place a rogue object in the
QTEMP and it gets found instead of the real object.

The solution is to keep the QTEMP in the bottom of the list and to
always reference the QTEMP explicitly.



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