The LINKLST GSO record value if specified only contains trusted system datasets.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-138	ACF0330	SV-138r2_rule	DCCS-1 DCCS-2	Medium

Description
The system-wide options control the default settings for determining how the ACP will function when handling requests for access to the operating system environment, ACP, and customer data. The ACP provides the ability to set a number of these fields at the subsystem level. If no setting is found, the system-wide defaults will be used. The improper setting of any one of these fields, individually or in combination with another, can compromise the security of the processing environment. In addition, failure to establish standardized settings for the ACP control options introduces the possibility of exposure during a migration process or contingency plan activation.

Description

The system-wide options control the default settings for determining how the ACP will function when handling requests for access to the operating system environment, ACP, and customer data. The ACP provides the ability to set a number of these fields at the subsystem level. If no setting is found, the system-wide defaults will be used. The improper setting of any one of these fields, individually or in combination with another, can compromise the security of the processing environment. In addition, failure to establish standardized settings for the ACP control options introduces the possibility of exposure during a migration process or contingency plan activation.

STIG	Date
z/OS ACF2 STIG	2019-12-12

Details

Check Text ( C-17366r1_chk )
a) Refer to the following report produced by the ACF2 Data Collection: - ACF2CMDS.RPT(ACFGSO) Automated Analysis Refer to the following report produced by the ACF2 Data Collection: - PDI(ACF0330) b) If the GSO LINKLST record values conform to the following requirements, there is NO FINDING. Specifies one or more partitioned data sets considered part of the system link (SYS1.LINKLIB) during data set access validation. Only trusted system data sets will be listed. Application libraries will never be included. Example: LIBRARY(SYS1.LINKLIB SYS2A.FDR.LOADLIB) c) If there is any deviation from the above requirements in the GSO LINKLST record values, this is a FINDING.

Check Text ( C-17366r1_chk )

a) Refer to the following report produced by the ACF2 Data Collection:

- ACF2CMDS.RPT(ACFGSO)

Automated Analysis
Refer to the following report produced by the ACF2 Data Collection:

- PDI(ACF0330)

b) If the GSO LINKLST record values conform to the following requirements, there is NO FINDING.

Specifies one or more partitioned data sets considered part of the system link (SYS1.LINKLIB) during data set access validation. Only trusted system data sets will be listed. Application libraries will never be included. Example: LIBRARY(SYS1.LINKLIB SYS2A.FDR.LOADLIB)

c) If there is any deviation from the above requirements in the GSO LINKLST record values, this is a FINDING.

Fix Text (F-16537r1_fix)
The IAO will ensure the LINKLIST GSO value if specified only contains trusted system datasets. Specifies one or more partitioned data sets considered part of the system link (SYS1.LINKLIB) during data set access validation. Only trusted system data sets will be listed. Application libraries will never be included. Example: SET C(GSO) INSERT LINKLST LIBRARY(SYS1.LINKLIB SYS2A.FDR.LOADLIB) F ACF2,REFRESH(LINKLST)

Fix Text (F-16537r1_fix)

The IAO will ensure the LINKLIST GSO value if specified only contains trusted system datasets.

Specifies one or more partitioned data
sets considered part of the system link
(SYS1.LINKLIB) during data set
access validation.

Only trusted system data sets will
be listed. Application
libraries will never be included.

Example:

SET C(GSO)
INSERT LINKLST LIBRARY(SYS1.LINKLIB SYS2A.FDR.LOADLIB)

F ACF2,REFRESH(LINKLST)