ACF2 PPGM GSO record value must specify protected programs that are only executed by privileged users.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223459	ACF2-ES-000390	SV-223459r877392_rule		Medium

Description

Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or privileges. Privileged functions include, for example, establishing accounts, performing system integrity checks, or administering cryptographic key management activities. Non-privileged users are individuals that do not possess appropriate authorizations. Circumventing intrusion detection and prevention mechanisms or malicious code protection mechanisms are examples of privileged functions that require protection from non-privileged users.

STIG	Date
IBM z/OS ACF2 Security Technical Implementation Guide	2022-12-14

Details

Check Text ( C-25132r504504_chk )

From the ACF command screen enter: SET CONTROL(GSO) LIST LIKE(PPGM-) Refer to the table of Sensitive Utilities resources and/or generic equivalent as detailed in the table. If all applicable programs or their generic equivalent referenced below are represented by GSO PPGM record values, this is not a finding. Sensitive Utility Controls Program Product Function AHLGTF z/OS System Activity Tracing HHLGTF IHLGTF ICPIOCP z/OS System Configuration IOPIOCP IXPIOCP IYPIOCP IZPIOCP BLSROPTR z/OS Data Management DEBE OS/DEBE Data Management DITTO OS/DITTO Data Management FDRZAPOP FDR Product Internal Modification GIMSMP SMP/E Change Management Product ICKDSF z/OS DASD Management IDCSC01 z/OS IDCAMS Set Cache Module IEHINITT z/OS Tape Management IFASMFDP z/OS SMF Data Dump Utility IND$FILE z/OS PC to Mainframe File Transfer (Applicable only for classified systems) CSQJU003 IBM WebSphereMQ CSQJU004 CSQUCVX CSQ1LOGP CSQUTIL WHOIS z/OS Share MOD to identify user name from USERID. Restricted to data center personnel only.

Fix Text (F-25120r504505_fix)

Configure the PPGM GSO value indicating protected programs that are only executed by privileged users in the table below. Sensitive Utility Controls Program Product Function AHLGTF z/OS System Activity Tracing HHLGTF IHLGTF ICPIOCP z/OS System Configuration IOPIOCP IXPIOCP IYPIOCP IZPIOCP BLSROPTR z/OS Data Management DEBE OS/DEBE Data Management DITTO OS/DITTO Data Management FDRZAPOP FDR Product Internal Modification GIMSMP SMP/E Change Management Product ICKDSF z/OS DASD Management IDCSC01 z/OS IDCAMS Set Cache Module IEHINITT z/OS Tape Management IFASMFDP z/OS SMF Data Dump Utility IND$FILE z/OS PC to Mainframe File Transfer (Applicable only for classified systems) CSQJU003 IBM WebSphereMQ CSQJU004 CSQUCVX CSQ1LOGP CSQUTIL WHOIS z/OS Share MOD to identify user name from USERID. Restricted to data center personnel only. Define protected programs that can only be executed by privileged users. PGM MASK(pgm mask1, ...,pgm-mask255) Example: SET C(GSO) INSERT PPGM PGM-MASK() F ACF2,REFRESH(PPGM)