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.LPALIB to system programmers only.

DISA Rule

SV-223896r561402_rule

Vulnerability Number

V-223896

Group Title

SRG-OS-000080-GPOS-00048

Rule Version

TSS0-ES-000230

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

Fix Recommendation

Review access authorization to critical system files. Evaluate the impact of correcting the deficiency. Develop a plan of action and implement the changes required to protect SYS1.LPALIB.

Configure WRITE or greater access to SYS1.LPALIB to be limited to system programmers only and all WRITE or greater access is logged.

Check Contents

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

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

If any of the following is true, this is a finding.

The ESM data set rules for SYS1.LPALIB do not restrict WRITE or greater access to only z/OS systems programming personnel.
The ESM data set rules for SYS1.LPALIB do not specify that all (i.e., failures and successes) WRITE or greater access will be logged.

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

DISA Rule

Vulnerability Number

Group Title

Rule Version

Severity

CCI(s)

Weight

Fix Recommendation

Check Contents

Vulnerability Number

Documentable

Rule Version

Severity Override Guidance

Check Content Reference

Target Key

Comments