The VTHRESH Control Option values specified are not set to (10,NOT,CAN).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223	TSS0730	SV-223r2_rule	DCCS-1 DCCS-2	Medium

Description
The VTHRESH Control Option selects an access violation threshold for users, batch jobs and started tasks, and selects the action that TSS will take when the threshold is reached. 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 VTHRESH Control Option selects an access violation threshold for users, batch jobs and started tasks, and selects the action that TSS will take when the threshold is reached. 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	2018-12-20

Details

Check Text ( C-520r1_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(TSS0730) b) If the VTHRESH Control Option values are set to VTHRESH(10,NOT,CAN), there is NO FINDING. c) If the VTHRESH Control Option values are not set to VTHRRESH(10,NOT,CAN), this is a FINDING.

Fix Text (F-18016r1_fix)
Evaluate the impact associated with implementation of the control option. Develop a plan of action to implement the control option setting to VTHRESH(10,NOT,CAN), and proceed with the change.