CA-ACF2 must limit access to SYSTEM DUMP data sets to appropriate authorized users.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223433	ACF2-ES-000120	SV-223433r918576_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.

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.

STIG	Date
IBM z/OS ACF2 Security Technical Implementation Guide	2024-02-22

Details

Check Text ( C-25106r918575_chk )
Ask the system administrator and/or DASD administrator to determine the System Dump data sets. Refer to data sets SYS1.DUMPxx. Dump data sets can be identified by reviewing the logical parmlib concatenation data sets for the current COMMNDxx member. Find the COM= that specifies the DUMPDS NAME (DD NAME=name-pattern) entry. The name-pattern is used to identify additional Dump data sets. If ACF2 data set rules for System Dump data sets do not restrict READ, WRITE, and/or ALLOCATE access to only systems programming personnel, this is a finding. If ACF2 data set rules for all System Dump data sets do not restrict READ access to personnel having justification to review these Dump data sets, this is a finding.

Check Text ( C-25106r918575_chk )

Ask the system administrator and/or DASD administrator to determine the System Dump data sets.

Refer to data sets SYS1.DUMPxx. Dump data sets can be identified by reviewing the logical parmlib concatenation data sets for the current COMMNDxx member. Find the COM= that specifies the DUMPDS NAME (DD NAME=name-pattern) entry. The name-pattern is used to identify additional Dump data sets.

If ACF2 data set rules for System Dump data sets do not restrict READ, WRITE, and/or ALLOCATE access to only systems programming personnel, this is a finding.

If ACF2 data set rules for all System Dump data sets do not restrict READ access to personnel having justification to review these Dump data sets, this is a finding.

Fix Text (F-25094r504435_fix)
Configure data set rules for access to SYSTEM DUMP data set(s) to be limited to system programmers only, unless a letter justifying access is filed with the ISSO in the site security plan. Evaluate the impact of correcting the deficiency. Develop a plan of action and implement the changes required to restrict access to these data sets.