IBM z/OS UNIX MVS data sets with z/OS UNIX components must be properly protected.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223623	ACF2-US-000080	SV-223623r533198_rule		Medium

Description
Access control policies include: identity-based policies, role-based policies, and attribute-based policies. Access enforcement mechanisms include: access control lists, access control matrices, and cryptography. These policies and mechanisms must be employed by the application to control access between users (or processes acting on behalf of users) and objects (e.g., devices, files, records, processes, programs, and domains) in the information system. Satisfies: SRG-OS-000080-GPOS-00048, SRG-OS-000259-GPOS-00100

Description

Access control policies include: identity-based policies, role-based policies, and attribute-based policies. Access enforcement mechanisms include: access control lists, access control matrices, and cryptography. These policies and mechanisms must be employed by the application to control access between users (or processes acting on behalf of users) and objects (e.g., devices, files, records, processes, programs, and domains) in the information system. Satisfies: SRG-OS-000080-GPOS-00048, SRG-OS-000259-GPOS-00100

STIG	Date
IBM z/OS ACF2 Security Technical Implementation Guide	2021-03-29

Details

Check Text ( C-25296r504827_chk )
If the ESM data set rules for each of the data sets listed in the table below restrict UPDATE and ALLOCATE access to systems programming personnel, this is not a finding. MVS DATA SETS WITH z/OS UNIX COMPONENTS DATA SET NAME/MASK MAINTENANCE TYPE FUNCTION SYS1.ABPX* Distribution IBM z/OS UNIX ISPF panels, messages, tables, clists SYS1.AFOM* Distribution IBM z/OS UNIX Application Services SYS1.BPA.ABPA* Distribution IBM z/OS UNIX Connection Scaling Process Mgr. SYS1.CMX.ACMX* Distribution IBM z/OS UNIX Connection Scaling Connection Mgr. SYS1.SBPX* Target IBM z/OS UNIX ISPF panels, messages, tables, clists SYS1.SFOM* Target IBM z/OS UNIX Application Services SYS1.CMX.SCMX* Target IBM z/OS UNIX Connection Scaling Connection Mgr.

Check Text ( C-25296r504827_chk )

If the ESM data set rules for each of the data sets listed in the table below restrict UPDATE and ALLOCATE access to systems programming personnel, this is not a finding.

MVS DATA SETS WITH z/OS UNIX COMPONENTS
DATA SET NAME/MASK MAINTENANCE TYPE FUNCTION
SYS1.ABPX* Distribution IBM z/OS UNIX ISPF panels, messages, tables, clists
SYS1.AFOM* Distribution IBM z/OS UNIX Application Services
SYS1.BPA.ABPA* Distribution IBM z/OS UNIX Connection Scaling Process Mgr.
SYS1.CMX.ACMX* Distribution IBM z/OS UNIX Connection Scaling Connection Mgr.
SYS1.SBPX* Target IBM z/OS UNIX ISPF panels, messages, tables, clists
SYS1.SFOM* Target IBM z/OS UNIX Application Services
SYS1.CMX.SCMX* Target IBM z/OS UNIX Connection Scaling Connection Mgr.

Fix Text (F-25284r504828_fix)
Define ESM data set rules for each of the data sets listed in the table below restrict UPDATE and ALLOCATE access to systems programming personnel. The data sets designated as distribution data sets should have all access restricted to systems programming personnel. TSO/E users who also use z/OS UNIX should have read access to the SYS1.SBPX* data sets. Read access for all users to the remaining target data sets is at the site's discretion. All other access must be restricted to systems programming personnel. MVS DATA SETS WITH z/OS UNIX COMPONENTS DATA SET NAME/MASK MAINTENANCE TYPE FUNCTION SYS1.ABPX* Distribution IBM z/OS UNIX ISPF panels, messages, tables, clists SYS1.AFOM* Distribution IBM z/OS UNIX Application Services SYS1.BPA.ABPA* Distribution IBM z/OS UNIX Connection Scaling Process Mgr. SYS1.CMX.ACMX* Distribution IBM z/OS UNIX Connection Scaling Connection Mgr. SYS1.SBPX* Target IBM z/OS UNIX ISPF panels, messages, tables, clists SYS1.SFOM* Target IBM z/OS UNIX Application Services SYS1.CMX.SCMX* Target IBM z/OS UNIX Connection Scaling Connection Mgr.

Fix Text (F-25284r504828_fix)

Define ESM data set rules for each of the data sets listed in the table below restrict UPDATE and ALLOCATE access to systems programming personnel.

The data sets designated as distribution data sets should have all access restricted to systems programming personnel. TSO/E users who also use z/OS UNIX should have read access to the SYS1.SBPX* data sets. Read access for all users to the remaining target data sets is at the site's discretion. All other access must be restricted to systems programming personnel.

MVS DATA SETS WITH z/OS UNIX COMPONENTS
DATA SET NAME/MASK MAINTENANCE TYPE FUNCTION
SYS1.ABPX* Distribution IBM z/OS UNIX ISPF panels, messages, tables, clists
SYS1.AFOM* Distribution IBM z/OS UNIX Application Services
SYS1.BPA.ABPA* Distribution IBM z/OS UNIX Connection Scaling Process Mgr.
SYS1.CMX.ACMX* Distribution IBM z/OS UNIX Connection Scaling Connection Mgr.
SYS1.SBPX* Target IBM z/OS UNIX ISPF panels, messages, tables, clists
SYS1.SFOM* Target IBM z/OS UNIX Application Services
SYS1.CMX.SCMX* Target IBM z/OS UNIX Connection Scaling Connection Mgr.