The DOWN Control Option values specified are not set to (BW,SB,OW) and TW if users are still defined in SYS1.UADS, TN if only systems personnel are defined in SYS1.UADS.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-196	TSS0360	SV-196r2_rule	DCCS-1 DCCS-2	Medium

Description
The DOWN Control Option determines how jobs are initiated and passwords changed when the TSS address space is inactive. 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 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 migration process or contingency plan activation.

Description

The DOWN Control Option determines how jobs are initiated and passwords changed when the TSS address space is inactive. 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 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 migration process or contingency plan activation.

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

Details

Check Text ( C-17881r1_chk )
a) Refer to the following report produced by the TSS Data Collection: - TSSCMDS.RPT(STATUS) Automated Analysis Refer to the following report produced by the TSS Data Collection: - PDI(TSS0360) b) If only systems personnel are defined in SYS1.UADS and the DOWN Control Option values are set to DOWN(BW,SB,TN,OW), there is NO FINDING. c) If non systems personnel are defined in SYS1.UADS and the DOWN Control Option values are set to DOWN(BW,SB,TW,OW), there is NO FINDING. d) If the DOWN Control Option values do not conform to the above requirements, this is a FINDING.

Check Text ( C-17881r1_chk )

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

- TSSCMDS.RPT(STATUS)

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

- PDI(TSS0360)

b) If only systems personnel are defined in SYS1.UADS and the DOWN Control Option values are set to DOWN(BW,SB,TN,OW), there is NO FINDING.

c) If non systems personnel are defined in SYS1.UADS and the DOWN Control Option values are set to DOWN(BW,SB,TW,OW), there is NO FINDING.

d) If the DOWN Control Option values do not conform to the above requirements, this is a FINDING.

Fix Text (F-17043r1_fix)
Evaluate the impact associated with implementation of the control option. Develop a plan of action to implement the control option setting as specified below and proceed with the change. Setting if ONLY systems personnel are defined in SYS1.UADS: DOWN(BW,SB,TN,OW) Setting if any non systems personnel are defined in SYS1.UADS: DOWN(BW,SB,TW,OW)