STIGQter: STIG Summary: IBM z/OS TSS Security Technical Implementation Guide Version: 9 Release: 9 Benchmark Date: 01 Jul 2026:

IBM z/OS for PKI-based authentication must use ICSF or the ESM to store keys.

DISA Rule

SV-223883r998485_rule

Vulnerability Number

V-223883

Group Title

SRG-OS-000067-GPOS-00035

Rule Version

TSS0-ES-000100

Severity

CAT II

CCI(s)

• CCI-000186 - For public key-based authentication, enforce authorized access to the corresponding private key.
• CCI-004910 - Provide protected storage for cryptographic keys with organization-defined safeguards and/or hardware protected key store.

Weight

10

Fix Recommendation

Define all Keys/Certificates to ICSF or the security database.

Remove all .kdb and .jks key files.

Check Contents

Any keys or Certificates must be managed in ICSF or the external security manager and not in UNIX files.

From the ISPF Command Shell enter:
OMVS
enter
find / -name *.kdb
and
Find / -name *.jks

If any files are present, this is a finding.

OMVS
enter
find / -name *.kdb
and
Find / -name *.jks

If any files are present, this is a finding.

Vulnerability Number

V-223883

Documentable

False

Rule Version

TSS0-ES-000100

Severity Override Guidance

Any keys or Certificates must be managed in ICSF or the external security manager and not in UNIX files.

From the ISPF Command Shell enter:
OMVS
enter
find / -name *.kdb
and
Find / -name *.jks

If any files are present, this is a finding.

OMVS
enter
find / -name *.kdb
and
Find / -name *.jks

If any files are present, this is a finding.

Check Content Reference

M

Target Key

4102