Non-existent or inaccessible Link Pack Area (LPA) libraries.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-5605	AAMV0325	SV-5605r2_rule	DCCS-1 DCCS-2 DCSL-1	Low

Description
LPA libraries give a common access point for the general usage of modules. Many of the subsystems installed on a domain rely upon these modules for proper execution. If the list of libraries found in this LPA member is not properly maintained, the integrity of the operating environment is subject to compromise.

STIG	Date
z/OS ACF2 STIG	2018-01-05

Details

Check Text ( C-667r1_chk )
STIG ID: AAMV0325 Default Severity: Category III Refer to the following reports produced by the z/OS Data Collection: - PARMLIB.ACCESS(LPALSTxx) - PARMLIB.ACCESS(IEAFIXxx) - PARMLIB.ACCESS(IEALPAxx) NOTE: The LPALSTxx, IEAFIXxx, and IEALPAxx reports are only produced if inaccessible libraries exist. The report names represent the actual SYS1.PARMLIB members where inaccessible libraries are found. If these reports do not exist, there is NO FINDING. Automated Analysis Refer to the following report produced by the z/OS Data Collection: - PDI(AAMV0325) b) If no inaccessible LPA libraries exist, there is NO FINDING. c) If inaccessible LPA libraries do exist, this is a FINDING.

Check Text ( C-667r1_chk )

STIG ID: AAMV0325 Default Severity: Category III Refer to the following reports produced by the z/OS Data Collection:

- PARMLIB.ACCESS(LPALSTxx)
- PARMLIB.ACCESS(IEAFIXxx)
- PARMLIB.ACCESS(IEALPAxx)

NOTE: The LPALSTxx, IEAFIXxx, and IEALPAxx reports are only produced if inaccessible libraries exist. The report names represent the actual SYS1.PARMLIB members where inaccessible libraries are found. If these reports do not exist, there is NO FINDING.

Automated Analysis
Refer to the following report produced by the z/OS Data Collection:

- PDI(AAMV0325)

b) If no inaccessible LPA libraries exist, there is NO FINDING.

c) If inaccessible LPA libraries do exist, this is a FINDING.

Fix Text (F-16982r1_fix)
The systems programmer will ensure that only existing libraries are specified in the LPA list of libraries. Review all entries contained in the LPA members for the actual existence of each library. Develop a plan of action to correct deficiencies. The system Link Pack Area (LPA) is the component of MVS that maintains core operating system functions resident in main storage. A security concern exists when libraries from which LPA modules are obtained require APF authorization. Control over residence in the LPA is specified within the operating system in the following members of the data set SYS1.PARMLIB: - LPALSTxx specifies the names of libraries to be concatenated to SYS1.LPALIB when the LPA is generated at IPL in an MVS/XA or MVS/ESA system. (The xx is the suffix designated by the LPA parameter in the IEASYSxx member of SYS1.PARMLIB or overridden by the computer operator at system initial program load [IPL].) - IEAFIXxx specifies the names of modules from SYS1.SVCLIB, the LPALSTxx concatenation, and the LNKLSTxx concatenation that are to be temporarily fixed in central storage in the Fixed LPA (FLPA) for the duration of an IPL. (The xx is the suffix designated by the FIX parameter in the IEASYSxx member of SYS1.PARMLIB or overridden by the computer operator at IPL.) - IEALPAxx specifies the names of modules that will be loaded from the following: ? SYS1.SVCLIB ? The LPALSTxx concatenation ? The LNKLSTxx concatenation as a temporary extension to the existing Pageable LPA (PLPA) in the Modified LPA (MLPA) for the duration of an IPL. (The xx is the suffix designated by the MLPA parameter in the IEASYSxx member of SYS1.PARMLIB or overridden by the computer operator at IPL.) Use the following recommendations and techniques to control the exposures created by the LPA facility: (1) The LPALSTxx, IEAFIXxx, and IEALPAxx members will contain only required libraries. On a semi annual basis, Software Support should review the volume serial numbers, and should verify them in accordance with the system catalog. Software Support will remove all non existent libraries. The IAO should modify and/or delete the rules associated with these libraries.

Fix Text (F-16982r1_fix)

The systems programmer will ensure that only existing libraries are specified in the LPA list of libraries.

Review all entries contained in the LPA members for the actual existence of each library. Develop a plan of action to correct deficiencies.

The system Link Pack Area (LPA) is the component of MVS that maintains core operating system functions resident in main storage. A security concern exists when libraries from which LPA modules are obtained require APF authorization.

Control over residence in the LPA is specified within the operating system in the following members of the data set SYS1.PARMLIB:

- LPALSTxx specifies the names of libraries to be concatenated to SYS1.LPALIB when the LPA is generated at IPL in an MVS/XA or MVS/ESA system. (The xx is the suffix designated by the LPA parameter in the IEASYSxx member of SYS1.PARMLIB or overridden by the computer operator at system initial program load [IPL].)

- IEAFIXxx specifies the names of modules from SYS1.SVCLIB, the LPALSTxx concatenation, and the LNKLSTxx concatenation that are to be temporarily fixed in central storage in the Fixed LPA (FLPA) for the duration of an IPL. (The xx is the suffix designated by the FIX parameter in the IEASYSxx member of SYS1.PARMLIB or overridden by the computer operator at IPL.)

- IEALPAxx specifies the names of modules that will be loaded from the following:

? SYS1.SVCLIB
? The LPALSTxx concatenation
? The LNKLSTxx concatenation as a temporary extension to the existing Pageable

LPA (PLPA) in the Modified LPA (MLPA) for the duration of an IPL. (The xx is the suffix designated by the MLPA parameter in the IEASYSxx member of SYS1.PARMLIB or overridden by the computer operator at IPL.)

Use the following recommendations and techniques to control the exposures created by the LPA facility:

(1) The LPALSTxx, IEAFIXxx, and IEALPAxx members will contain only required libraries. On a semi annual basis, Software Support should review the volume serial numbers, and should verify them in accordance with the system catalog. Software Support will remove all non existent libraries. The IAO should modify and/or delete the rules associated with these libraries.