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

IBM Integrated Crypto Service Facility (ICSF) Configuration parameters must be correctly specified.

DISA Rule

SV-255940r991589_rule

Vulnerability Number

V-255940

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

TSS0-IC-000010

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Evaluate the impact associated with implementation of the control options. Develop a plan of action to implement the control options for CSFPRMxx as specified below:

REASONCODES(ICSF)
COMPAT(NO)
SSM(NO)
SSM can be dynamically set by defining the CSF.SSM.ENABLE SAF profile within the XFACILIT resource
Class. This profile must limited to authorized personnel.

CHECKAUTH(YES)
FIPSMODE(YES,FAIL(YES))
AUDITKEYLIFECKDS (TOKEN(YES),LABEL(YES)).
AUDITKEYLIFEPKDS (TOKEN(YES),LABEL(YES)).
AUDITKEYLIFETKDS (TOKENOBJ(YES),SESSIONOBJ(YES)).
AUDITKEYUSGCKDS (TOKEN(YES),LABEL(YES),INTERVAL(n)).
AUDITKEYUSGPKDS (TOKEN(YES),LABEL(YES),INTERVAL(n)).
AUDITPKCS11USG (TOKENOBJ(YES),SESSIONOBJ(YES),NOKEY(YES),INTERVAL(n)).


DEFAULTWRAP -This parameter can be determined by the site. ENHANCED wrapping specifies the new X9.24 compliant CBC wrapping is used.
If DEFAULTWRAP is not specified, the default wrapping
method will be ORIGINAL for both internal and external tokens. Starting with ICSF FMID HCR77C0, the value for this option can be updated without restarting ICSF by using either the SETICSF command or the ICSF Multi-Purpose service. This access must be restricted to appropriate personnel.
Note: Other options may be site defined.

Check Contents

Refer to the CSFPRMxx member in the logical PARMLIB concatenation.

If the configuration parameters are specified as follows this is not a finding.

REASONCODES(ICSF)
COMPAT(NO)
SSM(NO)
SSM can be dynamically set by defining the CSF.SSM.ENABLE SAF profile within the XFACILIT resource
Class. If this profile is not limited to authorized personnel this is a finding.
CHECKAUTH(YES)
FIPSMODE(YES,FAIL(YES))
AUDITKEYLIFECKDS (TOKEN(YES),LABEL(YES)).
AUDITKEYLIFEPKDS (TOKEN(YES),LABEL(YES)).
AUDITKEYLIFETKDS (TOKENOBJ(YES),SESSIONOBJ(YES)).
AUDITKEYUSGCKDS (TOKEN(YES),LABEL(YES),INTERVAL(n)).
AUDITKEYUSGPKDS (TOKEN(YES),LABEL(YES),INTERVAL(n)).
AUDITPKCS11USG (TOKENOBJ(YES),SESSIONOBJ(YES),NOKEY(YES),INTERVAL(n)).

DEFAULTWRAP -This parameter can be determined by the site. ENHANCED wrapping specifies the new X9.24 compliant CBC wrapping is used.
If DEFAULTWRAP is not specified, the default wrapping
method will be ORIGINAL for both internal and external tokens. Starting with ICSF FMID HCR77C0, the value for this option can be updated without restarting ICSF by using either the SETICSF command or the ICSF Multi-Purpose service. If this access is not restricted to appropriate personnel, this is a finding. (Note: Other options may be site defined.

Vulnerability Number

V-255940

Documentable

False

Rule Version

TSS0-IC-000010

Severity Override Guidance

Refer to the CSFPRMxx member in the logical PARMLIB concatenation.

If the configuration parameters are specified as follows this is not a finding.

REASONCODES(ICSF)
COMPAT(NO)
SSM(NO)
SSM can be dynamically set by defining the CSF.SSM.ENABLE SAF profile within the XFACILIT resource
Class. If this profile is not limited to authorized personnel this is a finding.
CHECKAUTH(YES)
FIPSMODE(YES,FAIL(YES))
AUDITKEYLIFECKDS (TOKEN(YES),LABEL(YES)).
AUDITKEYLIFEPKDS (TOKEN(YES),LABEL(YES)).
AUDITKEYLIFETKDS (TOKENOBJ(YES),SESSIONOBJ(YES)).
AUDITKEYUSGCKDS (TOKEN(YES),LABEL(YES),INTERVAL(n)).
AUDITKEYUSGPKDS (TOKEN(YES),LABEL(YES),INTERVAL(n)).
AUDITPKCS11USG (TOKENOBJ(YES),SESSIONOBJ(YES),NOKEY(YES),INTERVAL(n)).

DEFAULTWRAP -This parameter can be determined by the site. ENHANCED wrapping specifies the new X9.24 compliant CBC wrapping is used.
If DEFAULTWRAP is not specified, the default wrapping
method will be ORIGINAL for both internal and external tokens. Starting with ICSF FMID HCR77C0, the value for this option can be updated without restarting ICSF by using either the SETICSF command or the ICSF Multi-Purpose service. If this access is not restricted to appropriate personnel, this is a finding. (Note: Other options may be site defined.

Check Content Reference

M

Target Key

4102