STIGQter: STIG Summary: IBM z/OS ACF2 Security Technical Implementation Guide Version: 8 Release: 2 Benchmark Date: 23 Apr 2021:

IBM z/OS JES2 output devices must be controlled in accordance with the proper security requirements.

DISA Rule

SV-223534r533198_rule

Vulnerability Number

V-223534

Group Title

SRG-OS-000080-GPOS-00048

Rule Version

ACF2-JS-000070

Severity

CAT II

CCI(s)

• 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

NOTE: If CLASMAP defines WRITER as anything other than TYPE(WTR), replace WTR below with the appropriate three letters.

Configure the WRITER resource class (i.e., TYPE(WTR)) as follows with:

JES2.- (backstop profile)
JES2.LOCAL.OFFn.- (spool offload transmitter)
JES2.LOCAL.OFFn.ST (spool offload SYSOUT transmitter)
JES2.LOCAL.OFFn.JT (spool offload job transmitter)
JES2.LOCAL.PRTn (local printer)
JES2.LOCAL.PUNn (local punch)
JES2.NJE.nodename (NJE node)
JES2.RJE.Rnnnn.PRm (remote printer)
JES2.RJE.Rnnnn.PUm (remote punch)

Ensure the following items are in effect:

The JES2.- resource is defined to the WRITER resource class with a default access of PREVENT.

The other resources mentioned above are protected by generic and/or fully qualified rules defined to the WRITER resource class with a default access of PREVENT.

NOTE: A default access of READ is allowed for output destinations that are permitted to route output for all users. Currently, there is no guidance on which output destinations are appropriate for a default access of READ. However, common sense should prevail during the analysis. For example, a default access of READ would typically be inappropriate for RJE, NJE, and offload output destinations.

Examples:
$KEY(JES2) TYPE(WTR)
LOCAL.OFF- UID(*) PREVENT
LOCAL.OFF-.JT UID(*) PREVENT
LOCAL.OFF-.ST UID(oper) SERVICE(READ) ALLOW
LOCAL.OFF-.ST UID(sysprgmr) SERVICE(READ) ALLOW
LOCAL.OFF-.ST UID(seca) SERVICE(READ) ALLOW
LOCAL.OFF-.ST UID(*) PREVENT
LOCAL.PRT- UID(*) SERVICE(READ) ALLOW
LOCAL.PUN- UID(*) PREVENT
NJE.- UID(*) SERVICE(READ) ALLOW
RJE.- UID(sysprgmr) SERVICE(READ) ALLOW
RJE.- UID(*) PREVENT
- UID(*) PREVENT

Check Contents

From the ACF input screen enter:
SET CONTROL(GSO)
LIST LIKE(CLASMAP-) [To determine the resource class for WRITER]

NOTE: If CLASMAP defines WRITER as anything other than TYPE(WTR), replace WTR below with the appropriate three letters.

SET RESOURCE(WTR)
LIST LIKE(-)

If the JES2.- resource is defined to the WRITER resource class with a default access of PREVENT, this is not a finding.

If the other resources mentioned below are protected by generic and/or fully qualified rules defined to the WRITER resource class with a default access of PREVENT, this is not a finding.

If the ACF2 resources and/or generic equivalent identified below are defined with access restricted to the appropriate personnel, this is not a finding.

NOTE: A default access of READ is allowed for output destinations that are permitted to route output for all users. Currently, there is no guidance on which output destinations are appropriate for a default access of READ. However, common sense should prevail during the analysis. For example, a default access of READ would typically be inappropriate for RJE, NJE, and offload output destinations.

JES2 is typically the name of the JES2 subsystem. Refer to the SUBSYS report and locate the entry with the description of PRIMARY JOB ENTRY SUBSYSTEM. The SUBSYSTEM NAME of this entry is the name of the JES2 subsystem.

OFFn, where n is the number of the offload transmitter. Determine the numbers by searching for OFF( in the JES2 parameters.

PRTn, where n is the number of the local printer. Determine the numbers by searching for PRT( in the JES2 parameters.

PUNn, where n is the number of the local card punch. Determine the numbers by searching for PUN( in the JES2 parameters.

Nodename is the NAME parameter value specified on the NODE statement. Review the JES2 parameters for NJE node definitions by searching for NODE( in the report.

Rnnnn.PRm, where nnnn is the number of the remote workstation and m is the number of the printer. Determine the numbers by searching for .PR in the JES2 parameters.

Rnnnn.PUm, where nnnn is the number of the remote workstation and m is the number of the punch. Determine the numbers by searching for .PU in the JES2 parameters.

Vulnerability Number

V-223534

Documentable

False

Rule Version

ACF2-JS-000070

Severity Override Guidance

From the ACF input screen enter:
SET CONTROL(GSO)
LIST LIKE(CLASMAP-) [To determine the resource class for WRITER]

NOTE: If CLASMAP defines WRITER as anything other than TYPE(WTR), replace WTR below with the appropriate three letters.

SET RESOURCE(WTR)
LIST LIKE(-)

If the JES2.- resource is defined to the WRITER resource class with a default access of PREVENT, this is not a finding.

If the other resources mentioned below are protected by generic and/or fully qualified rules defined to the WRITER resource class with a default access of PREVENT, this is not a finding.

If the ACF2 resources and/or generic equivalent identified below are defined with access restricted to the appropriate personnel, this is not a finding.

NOTE: A default access of READ is allowed for output destinations that are permitted to route output for all users. Currently, there is no guidance on which output destinations are appropriate for a default access of READ. However, common sense should prevail during the analysis. For example, a default access of READ would typically be inappropriate for RJE, NJE, and offload output destinations.

JES2 is typically the name of the JES2 subsystem. Refer to the SUBSYS report and locate the entry with the description of PRIMARY JOB ENTRY SUBSYSTEM. The SUBSYSTEM NAME of this entry is the name of the JES2 subsystem.

OFFn, where n is the number of the offload transmitter. Determine the numbers by searching for OFF( in the JES2 parameters.

PRTn, where n is the number of the local printer. Determine the numbers by searching for PRT( in the JES2 parameters.

PUNn, where n is the number of the local card punch. Determine the numbers by searching for PUN( in the JES2 parameters.

Nodename is the NAME parameter value specified on the NODE statement. Review the JES2 parameters for NJE node definitions by searching for NODE( in the report.

Rnnnn.PRm, where nnnn is the number of the remote workstation and m is the number of the printer. Determine the numbers by searching for .PR in the JES2 parameters.

Rnnnn.PUm, where nnnn is the number of the remote workstation and m is the number of the punch. Determine the numbers by searching for .PU in the JES2 parameters.

Check Content Reference

M

Target Key

4100

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