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

CA-TSS must limit Write or greater access to SYS1.SVCLIB to system programmers only.

DISA Rule

SV-223894r561402_rule

Vulnerability Number

V-223894

Group Title

SRG-OS-000080-GPOS-00048

Rule Version

TSS0-ES-000210

Severity

CAT I

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.
• CCI-002235 - The information system prevents non-privileged users from executing privileged functions to include disabling, circumventing, or altering implemented security safeguards/countermeasures.

Weight

10

Fix Recommendation

Configure WRITE or greater access to SYS1.SVCLIB to be limited to system programmers only and all WRITE or greater access is logged and reviewed. Evaluate the impact of correcting the deficiency. Develop a plan of action and implement the changes for SYS1.SVCLIB. SYS1.SVCLIB contains SVCs and I/O appendages as such: they are very powerful and will be strictly controlled to avoid compromising system integrity.

Check Contents

Execute a data set list of access for SYS1.SVCLIB.

If all of the following are true, this is not a finding.

If any of the following are untrue, this is a finding.

ESM data set rules for SYS1.SVCLIB restrict WRITE or greater access to only z/OS systems programming personnel.
ESM data set rules for SYS1.SVCLIB specify that all (i.e., failures and successes) WRITE or greater access will be logged.

Vulnerability Number

V-223894

Documentable

False

Rule Version

TSS0-ES-000210

Severity Override Guidance

Execute a data set list of access for SYS1.SVCLIB.

If all of the following are true, this is not a finding.

If any of the following are untrue, this is a finding.

ESM data set rules for SYS1.SVCLIB restrict WRITE or greater access to only z/OS systems programming personnel.
ESM data set rules for SYS1.SVCLIB specify that all (i.e., failures and successes) WRITE or greater access will be logged.

Check Content Reference

M

Target Key

4102

Comments