The System datasets used to support the VTAM network are improperly secured.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-6956	ZVTM0018	SV-7360r2_rule		Medium

Description
VTAM options and definitions are used to define VTAM operational capabilities. They must be strictly controlled. Unauthorized users could override or change start options or network definitions. Failure to properly control VTAM resources could potentially compromise the network operations.

STIG	Date
z/OS TSS STIG	2019-09-27

Details

Check Text ( C-26116r1_chk )
a) Create a list of data set names containing all VTAM start options, configuration lists, network resource definitions, commands, procedures, exit routines, all SMP/E TLIBs, and all SMP/E DLIBs used for installation and in development/production VTAM environments. Refer to the following report produced by the Data Set and Resource Data Collection: - SENSITVE.RPT(VTAMRPT) Automated Analysis Refer to the following report produced by the Data Set and Resource Data Collection: - PDI(ZVTM0018) b) Ensure that TSS data set rules for all VTAM system data sets restrict access to only network systems programming staff. These data sets include libraries containing VTAM load modules and exit routines, and VTAM start options and definition statements. c) If (b) above is true, there is NO FINDING. d) If (b) above is untrue, this is a FINDING.

Check Text ( C-26116r1_chk )

a) Create a list of data set names containing all VTAM start options, configuration lists, network resource definitions, commands, procedures, exit routines, all SMP/E TLIBs, and all SMP/E DLIBs used for installation and in development/production VTAM environments.

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

- SENSITVE.RPT(VTAMRPT)

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

- PDI(ZVTM0018)

b) Ensure that TSS data set rules for all VTAM system data sets restrict access to only network systems programming staff. These data sets include libraries containing VTAM load modules and exit routines, and VTAM start options and definition statements.

c) If (b) above is true, there is NO FINDING.

d) If (b) above is untrue, this is a FINDING.

Fix Text (F-18842r1_fix)
Ensure that TSS data set rules for all VTAM system data sets restrict access to only network systems programming staff. These data sets include libraries containing VTAM load modules and exit routines, and VTAM start options and definition statements. The following sample TSS commands show proper permissions for VTAM datasets (replace "profile" with the profile name of the network systems programming staff authorities) : TSS PERMIT(profile) DSN(SYS1.VTAM.) ACC(ALL) TSS PERMIT(profile) DSN('SYS1.VTAMLIB.) ACC(ALL) TSS PERMIT(profile) DSN(SYS1.VTAM.SISTCLIB.) ACC(ALL) TSS PERMIT(profile) DSN(SYS3.VTAM.) ACC(ALL) TSS PERMIT(profile) DSN(SYS3.VTAMLIB.) ACC(ALL)

Fix Text (F-18842r1_fix)

Ensure that TSS data set rules for all VTAM system data sets restrict access to only network systems programming staff.

These data sets include libraries containing VTAM load modules and exit routines, and VTAM start options and definition statements.

The following sample TSS commands show proper permissions for VTAM datasets (replace "profile" with the profile name of the network systems programming staff authorities) :

TSS PERMIT(profile) DSN(SYS1.VTAM.) ACC(ALL)
TSS PERMIT(profile) DSN('SYS1.VTAMLIB.) ACC(ALL)
TSS PERMIT(profile) DSN(SYS1.VTAM.SISTCLIB.) ACC(ALL)
TSS PERMIT(profile) DSN(SYS3.VTAM.) ACC(ALL)
TSS PERMIT(profile) DSN(SYS3.VTAMLIB.) ACC(ALL)