STIGQter: STIG Summary: IBM z/OS TSS Security Technical Implementation Guide Version: 8 Release: 2 Benchmark Date: 23 Apr 2021:

IBM z/OS System data sets used to support the VTAM network must be properly secured.

DISA Rule

SV-224104r561402_rule

Vulnerability Number

V-224104

Group Title

SRG-OS-000080-GPOS-00048

Rule Version

TSS0-VT-000010

Severity

CAT II

CCI(s)

• CCI-001499 - The organization limits privileges to change software resident within software libraries.
• CCI-000213 - The information system enforces approved authorizations for logical access to information and system resources in accordance with applicable access control policies.

Weight

10

Fix Recommendation

Configure TSS data set rules for all VTAM system data sets restrict access to only network systems programming staff.
Auditors may have READ access as documented by and approved by the ISSM.

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 data sets (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)

Check Contents

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.
If the ESM data set rules for all VTAM system data sets restrict access to only network systems programming staff, this is not a finding.
If RACF data set rules for all VTAM system data sets all READ access to auditors only, this is not a finding.

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

Vulnerability Number

V-224104

Documentable

False

Rule Version

TSS0-VT-000010

Severity Override Guidance

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.
If the ESM data set rules for all VTAM system data sets restrict access to only network systems programming staff, this is not a finding.
If RACF data set rules for all VTAM system data sets all READ access to auditors only, this is not a finding.

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

Check Content Reference

M

Target Key

4102

Comments