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

IBM z/OS UNIX MVS data sets or HFS objects must be properly protected.

DISA Rule

SV-224079r561402_rule

Vulnerability Number

V-224079

Group Title

SRG-OS-000080-GPOS-00048

Rule Version

TSS0-US-000060

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

Weight

10

Fix Recommendation

Review the access authorizations defined in the ACP for the MVS data sets that contain operating system components and for the MVS data sets that contain HFS file systems and ensure that they conform to the specifications below.

Review the UNIX permission bits on the HFS directories and files and ensure that they conform to the specifications below:

Define ESM data set rules for the data sets referenced in the ROOT and the MOUNT statements in BPXPRMxx to restrict update access to the z/OS UNIX kernel (i.e., OMVS or OMVSKERN).

Define ESM data set rules for the data sets referenced in the ROOT and the MOUNT statements in BPXPRMxx to restrict WRITE or greater access to systems programming personnel.

Check Contents

Refer to the proper BPXPRMxx member in SYS1.PARMLIB

If the ESM data set rules for the data sets referenced in the ROOT and the MOUNT statements in BPXPRMxx restrict update access to the z/OS UNIX kernel (i.e., OMVS or OMVSKERN), this is not a finding.

If the ESM data set rules for the data set referenced in the ROOT and the MOUNT statements in BPXPRMxx restrict WRITE or greater access to systems programming personnel, this is not a finding.

Vulnerability Number

V-224079

Documentable

False

Rule Version

TSS0-US-000060

Severity Override Guidance

Refer to the proper BPXPRMxx member in SYS1.PARMLIB

If the ESM data set rules for the data sets referenced in the ROOT and the MOUNT statements in BPXPRMxx restrict update access to the z/OS UNIX kernel (i.e., OMVS or OMVSKERN), this is not a finding.

If the ESM data set rules for the data set referenced in the ROOT and the MOUNT statements in BPXPRMxx restrict WRITE or greater access to systems programming personnel, this is not a finding.

Check Content Reference

M

Target Key

4102

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