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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-255940	TSS0-IC-000010	SV-255940r881312_rule		Medium

Description
IBM Integrated Crypto Service Facility (ICSF) product has the ability to use privileged functions and/or have access to sensitive data. Failure to properly configure parameter values could potentially the integrity of the base product which could result in compromising the operating system or sensitive data.

STIG	Date
IBM z/OS TSS Security Technical Implementation Guide	2023-12-18

Details

Check Text ( C-59617r881310_chk )
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 Text ( C-59617r881310_chk )

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.

Fix Text (F-59560r881311_fix)
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.

Fix Text (F-59560r881311_fix)

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.