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 LINKLIST libraries to system programmers only.

DISA Rule

SV-223902r561402_rule

Vulnerability Number

V-223902

Group Title

SRG-OS-000080-GPOS-00048

Rule Version

TSS0-ES-000290

Severity

CAT II

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

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 the LINKLIST libraries.

Configure the WRITE or greater access to LINKLIST libraries to be limited to system programmers only and all WRITE or greater access is logged.

Check Contents

From any ISPF input line, enter TSO ISRDDN LINKLIST.

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

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

The ACP data set rules for LINKLIST libraries do not restrict WRITE or greater access to only z/OS systems programming personnel.

The ACP data set rules for LINKLIST libraries do not specify that all (i.e., failures and successes) WRITE or greater access will be logged.

Vulnerability Number

V-223902

Documentable

False

Rule Version

TSS0-ES-000290

Severity Override Guidance

From any ISPF input line, enter TSO ISRDDN LINKLIST.

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

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

The ACP data set rules for LINKLIST libraries do not restrict WRITE or greater access to only z/OS systems programming personnel.

The ACP data set rules for LINKLIST libraries 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