STIGQter: STIG Summary: z/OS CL/SuperSession for RACF STIG Version: 6 Release: 10 Benchmark Date: 27 Apr 2018:

CL/SuperSession STC data sets must be properly protected.

DISA Rule

SV-27097r3_rule

Vulnerability Number

V-17067

Group Title

ZB000001

Rule Version

ZCLSR001

Severity

CAT II

CCI(s)

• CCI-001499 - The organization limits privileges to change software resident within software libraries.

Weight

10

Fix Recommendation

Ensure that WRITE and/or greater access to CL/SuperSession STC data sets are limited to system programmers and CL/SuperSession STC only. Read access can be given to auditors and authorized users.

The installing Systems Programmer will identify and document the product data sets and categorize them according to who will have WRITE and/or greater access and if required that all WRITE and/or greater access is logged. He will identify if any additional groups have WRITE and/or greater access for specific data sets, and once documented he 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 are an example of data sets to be protected:
SYS3.OMEGAMON.RLSNAF
SYS3.OMEGAMON.RLSNAM
SYS3.OMEGAMON.RLSTDB
SYS3.OMEGAMON.RLSVLOG

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

ad 'sys3.omegamon.rlsnaf.** uacc(none) owner(sys3) -
audit(failures(read)) -
data('Site Customized CL/Supersession VSAM')
pe 'sys3.omegamon.rlsnaf.**' id(syspaudt) acc(a)
pe 'sys3.omegamon.rlsnaf.**' id(kls) acc(a)
pe 'sys3.omegamon.rlsnaf.**' id(audtaudt) acc(r)
pe 'sys3.omegamon.rlsnaf.**' id(*) acc(r)

ad 'sys3.omegamon.rlsnam.** uacc(none) owner(sys3) -
audit(failures(read)) -
data('Site Customized CL/Supersession VSAM')
pe 'sys3.omegamon.rlsnam.**' id(syspaudt) acc(a)
pe 'sys3.omegamon.rlsnam.**' id(kls) acc(a)
pe 'sys3.omegamon.rlsnam.**' id(audtaudt) acc(r)
pe 'sys3.omegamon.rlsnam.**' id(*) acc(r)

ad 'sys3.omegamon.rlstdb.** uacc(none) owner(sys3) -
audit(failures(read)) -
data('Site Customized CL/Supersession VSAM')
pe 'sys3.omegamon.rlstdb.**' id(syspaudt) acc(a)
pe 'sys3.omegamon.rlstdb.**' id(kls) acc(a)
pe 'sys3.omegamon.rlstdb.**' id(audtaudt) acc(r)
pe 'sys3.omegamon.rlstdb.**' id(*) acc(r)

ad 'sys3.omegamon.rlsvlog.** uacc(none) owner(sys3) -
audit(failures(read)) -
data('Site Customized CL/Supersession VSAM')
pe 'sys3.omegamon.rlsvlog.**' id(syspaudt) acc(a)
pe 'sys3.omegamon.rlsvlog.**' id(kls) acc(a)
pe 'sys3.omegamon.rlsvlog.**' id(audtaudt) acc(r)
pe 'sys3.omegamon.rlsvlog.**' id(*) acc(r)

Check Contents

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

- SENSITVE.RPT(KLSSTC)

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

- PDI(ZCLS0001)

Verify that the accesses to the CL/SuperSession STC data sets are properly restricted. If the following guidance is true, this is not a finding.

___ The RACF data set access authorizations restrict READ access to auditors and authorized users.

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

___ The RACF data set rules for the data sets does not restrict WRITE and/or greater access to the product STC(s) and/or batch job(s).

___ The RACF data set access authorizations for the data sets specify UACC(NONE) and NOWARNING.

Vulnerability Number

V-17067

Documentable

False

Rule Version

ZCLSR001

Severity Override Guidance

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

- SENSITVE.RPT(KLSSTC)

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

- PDI(ZCLS0001)

Verify that the accesses to the CL/SuperSession STC data sets are properly restricted. If the following guidance is true, this is not a finding.

___ The RACF data set access authorizations restrict READ access to auditors and authorized users.

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

___ The RACF data set rules for the data sets does not restrict WRITE and/or greater access to the product STC(s) and/or batch job(s).

___ The RACF data set access authorizations for the data sets specify UACC(NONE) and NOWARNING.

Check Content Reference

M

Responsibility

Systems Programmer

Target Key

1857

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