Various IBM applications accept extended parameter lists that may specify the 
addresses of exits. Putting such an application in AUTHPGM would be a disaster.


--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3


________________________________________
From: IBM Mainframe Discussion List <[email protected]> on behalf of 
Paul Gilmartin <[email protected]>
Sent: Friday, November 15, 2019 2:47 PM
To: [email protected]
Subject: Re: AUTHPGM in IKJTSOxx

On Wed, 13 Nov 2019 08:55:39 -0600, Jeffrey Holst wrote:

>Does AUTHPGM require that the specified program have a non-zero AC or that it 
>be in an APF authorized library?
>
>I ask because it appears that a very clever user may have written a program 
>whose name matches a program in the AUTHPGM list. The program executes a macro 
>instruction that requires APF authorization. It appears that he was able to 
>successfully call it from TSO.
>
What does AUTHPGM protect, or rather what security hazard does the
absence of a program from the AUTHPGM list specifically prevent?  Can
an expert outline a scenario?

-- gil

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