STIGQter STIGQter: STIG Summary: z/OS CSSMTP for TSS STIG Version: 6 Release: 5 Benchmark Date: 27 Oct 2017: IBM Communications Server Simple Mail Transfer Protocol (CSSMTP) STC data sets must be properly protected.

DISA Rule

SV-89727r2_rule

Vulnerability Number

V-17067

Group Title

ZB000001

Rule Version

ZSMTT001

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Ensure that WRITE and/or greater access to the IBM Communications Server Simple Mail Transfer Protocol (CSSMTP) STC data sets are limited to system programmers and CSSMTP STC and/or batch jobs only. READ access can be given to auditors at the ISSOs discretion.

The installing Systems Programmer will identify and document the product data sets and categorize them according to who will have what type of access and if required which type of access is logged. The installing systems programmer will identify any additional groups requiring access to specific data sets, and once documented the installing systems programmer will work with the ISSO to see that they are properly restricted to the ACP (Access Control Program) active on the system.

Note: The data sets and/or data set prefixes identified below are examples of a possible installation. The actual data sets and/or prefixes are determined when the product is actually installed on a system through the product’s installation guide and can be site specific.


The following commands are provided as an example for implementing data set controls:

TSS PERMIT(audtaudt) DSN(SYS3.TCPIP.CSSMTP.) ACCESS(R)
TSS PERMIT(syspaudt) DSN(SYS3.TCPIP.CSSMTP.) ACCESS(R)
TSS PERMIT(tstcaudt) DSN(SYS3.TCPIP.CSSMTP.) ACCESS(R)
TSS PERMIT(icststc) DSN(SYS3.TCPIP.CSSMTP.) ACCESS(R)
TSS PERMIT(syspaudt) DSN(SYS3.TCPIP.CSSMTP.) ACCESS(ALL)
TSS PERMIT(tstcaudt) DSN(SYS3.TCPIP.CSSMTP.) ACCESS(ALL)
TSS PERMIT(icststc) DSN(SYS3.TCPIP.CSSMTP.) ACCESS(ALL)

Check Contents

Examine the running started task for CSSMTP.

Verify that access to the IBM Communications Server Simple Mail Transfer Protocol (CSSMTP) STC data sets are properly restricted. The data sets to be protected are identified in the data set referenced in the DD statements of the CSSMTP started task(s) and/or batch job(s).
Refer to the following report produced by the Data Set and Resource Data Collection:

- SENSITVE.RPT(SMTPSTC)

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

- PDI(ZSMT0001)

If the following guidance is true, this is not a finding.

___ The TSS data set access authorizations restrict READ access to auditors.

___ The TSS data set access authorizations restrict WRITE and/or greater access to systems programming personnel.

___ The TSS data set access authorizations restrict WRITE and/or greater access to the product STC(s) and/or batch job(s).

Vulnerability Number

V-17067

Documentable

False

Rule Version

ZSMTT001

Severity Override Guidance

Examine the running started task for CSSMTP.

Verify that access to the IBM Communications Server Simple Mail Transfer Protocol (CSSMTP) STC data sets are properly restricted. The data sets to be protected are identified in the data set referenced in the DD statements of the CSSMTP started task(s) and/or batch job(s).
Refer to the following report produced by the Data Set and Resource Data Collection:

- SENSITVE.RPT(SMTPSTC)

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

- PDI(ZSMT0001)

If the following guidance is true, this is not a finding.

___ The TSS data set access authorizations restrict READ access to auditors.

___ The TSS data set access authorizations restrict WRITE and/or greater access to systems programming personnel.

___ The TSS data set access authorizations restrict WRITE and/or greater access to the product STC(s) and/or batch job(s).

Check Content Reference

M

Responsibility

Systems Programmer

Target Key

2091

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