IBM System Display and Search Facility (SDSF) installation data sets will be properly protected.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-224317	ZISFA000	SV-224317r840228_rule		Medium

Description
IBM System Display and Search Facility (SDSF) installation data sets have the ability to use privileged functions and/or have access to sensitive data. Failure to properly restrict access to these data sets could result in violating the integrity of the base product which could result in compromising the operating system or sensitive data.

STIG	Date
z/OS IBM System Display and Search Facility for ACF2 Security Technical Implementation Guide	2022-06-27

Details

Check Text ( C-25994r840226_chk )
Refer to the following report produced by the Data Set and Resource Data Collection: - SENSITVE.RPT(ISFRPT) Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ZISF0000) Verify that the accesses to the IBM SDSF installation data sets are properly restricted. If the following guidance is true, this is not a finding. ___ The ACF2 data set rules for the data sets restricts READ access to all authorized users. ___ The ACF2 data set rules for the data sets restricts WRITE and/or greater access to systems programming personnel. ___ The ACF2 data set rules for the data sets specify that all (i.e., failures and successes) WRITE and/or greater access is logged.

Check Text ( C-25994r840226_chk )

Refer to the following report produced by the Data Set and Resource Data Collection:

- SENSITVE.RPT(ISFRPT)

Automated Analysis
Refer to the following report produced by the Data Set and Resource Data Collection:

- PDI(ZISF0000)

Verify that the accesses to the IBM SDSF installation data sets are properly restricted. If the following guidance is true, this is not a finding.

___ The ACF2 data set rules for the data sets restricts READ access to all authorized users.

___ The ACF2 data set rules for the data sets restricts WRITE and/or greater access to systems programming personnel.

___ The ACF2 data set rules for the data sets specify that all (i.e., failures and successes) WRITE and/or greater access is logged.

Fix Text (F-25982r840227_fix)
The ISSO will ensure that WRITE and/or greater access to IBM SDSF installation data sets is limited to System Programmers only, and all WRITE and/or greater access is logged. READ access can be given to all authorized users. The installing Systems Programmer will identify and document the product data sets and categorize them according to who will have WRITE and/or greater access and if required that all WRITE and/or greater access is logged, will identify if any additional groups have WRITE and/or greater access for specific data sets, and once documented, will work with the ISSO to see that they are properly restricted to the ACP (Access Control Program) active on the system. Data sets to be protected will be: SYS1.ISF.AISF SYS1.ISF.SISF The following commands are provided as a sample for implementing data set controls: $KEY(S1I) $PREFIX(SYS1) ISF.AISF-.- UID(syspaudt) R(A) W(L) A(L) E(A) ISF.SISF-.- UID(syspaudt) R(A) W(L) A(L) E(A) ISF.SISF-.- UID(authorized users/*) R(A) E(A) SET RULE COMPILE 'ACF2.MVA.DSNRULES(S1I)' STORE

Fix Text (F-25982r840227_fix)

The ISSO will ensure that WRITE and/or greater access to IBM SDSF installation data sets is limited to System Programmers only, and all WRITE and/or greater access is logged. READ access can be given to all authorized users.

The installing Systems Programmer will identify and document the product data sets and categorize them according to who will have WRITE and/or greater access and if required that all WRITE and/or greater access is logged, will identify if any additional groups have WRITE and/or greater access for specific data sets, and once documented, will work with the ISSO to see that they are properly restricted to the ACP (Access Control Program) active on the system.

Data sets to be protected will be:
SYS1.ISF.AISF
SYS1.ISF.SISF

The following commands are provided as a sample for implementing data set controls:

$KEY(S1I)
$PREFIX(SYS1)
ISF.AISF-.- UID(syspaudt) R(A) W(L) A(L) E(A)
ISF.SISF-.- UID(syspaudt) R(A) W(L) A(L) E(A)
ISF.SISF-.- UID(authorized users/*) R(A) E(A)

SET RULE
COMPILE 'ACF2.MVA.DSNRULES(S1I)' STORE