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.IMAGELIB to system programmers only.

DISA Rule

SV-223895r561402_rule

Vulnerability Number

V-223895

Group Title

SRG-OS-000080-GPOS-00048

Rule Version

TSS0-ES-000220

Severity

CAT I

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.
• 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.IMAGELIB to be limited to system programmers only and all WRITE or greater access is logged.

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

SYS1.IMAGELIB is automatically APF-authorized. This data set contains modules, images, tables, and character sets which are essential to system print services.

Check Contents

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

If the following guidance is true, this is not a finding.

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

Vulnerability Number

V-223895

Documentable

False

Rule Version

TSS0-ES-000220

Severity Override Guidance

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

If the following guidance is true, this is not a finding.

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

Check Content Reference

M

Target Key

4102

Comments