III - Administrative Public
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000134-GPOS-00068
Group -
CA VM:Secure must have a security group for Security Administrators only.
An isolation boundary provides access control and protects the integrity of the hardware, software, and firmware that perform security functions. Security functions are the hardware, software, and...Rule Medium Severity -
SRG-OS-000138-GPOS-00069
Group -
The IBM z/VM SYSTEM CONFIG file must be configured to clear TDISK on IPL.
Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of information, produced by the actions of prior users/roles (or the actions of ...Rule Medium Severity -
SRG-OS-000142-GPOS-00071
Group -
The IBM z/VM TCP/IP FOREIGNIPCONLIMIT statement must be properly configured.
DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity. Managing exc...Rule Medium Severity -
SRG-OS-000142-GPOS-00071
Group -
The IBM z/VM TCP/IP PERSISTCONNECTIONLIMIT statement must be properly configured.
DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity. Managing exc...Rule Medium Severity -
SRG-OS-000142-GPOS-00071
Group -
The IBM z/VM TCP/IP PENDINGCONNECTIONLIMIT statement must be properly configured.
DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity. Managing exc...Rule Medium Severity -
SRG-OS-000185-GPOS-00079
Group -
IBM z/VM tapes must use Tape Encryption.
Information at rest refers to the state of information when it is located on a secondary storage device (e.g., disk drive and tape drive, when used for backups) within an operating system. Guest o...Rule Medium Severity -
SRG-OS-000228-GPOS-00088
Group -
The IBM z/VM TCP/IP must be configured to display the mandatory DoD Notice and Consent banner before granting access to the system.
Display of a standardized and approved use notification before granting access to the publicly accessible operating system ensures privacy and security notification verbiage used is consistent with...Rule Medium Severity -
SRG-OS-000254-GPOS-00095
Group -
The IBM z/VM JOURNALING statement must be coded on the configuration file.
If auditing is enabled late in the start-up process, the actions of some start-up processes may not be audited. Some audit systems also maintain state information only available if auditing is enab...Rule Medium Severity -
SRG-OS-000256-GPOS-00097
Group -
CA VM:Secure product SECURITY CONFIG file must be restricted to appropriate personnel.
Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operatio...Rule Medium Severity -
SRG-OS-000257-GPOS-00098
Group -
The IBM z/VM AUDT and Journal Mini Disks must be restricted to the appropriate system administrators.
Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operatio...Rule Medium Severity -
SRG-OS-000123-GPOS-00064
Group -
IBM z/VM must remove or disable emergency accounts after the crisis is resolved or 72 hours.
Emergency accounts are privileged accounts that are established in response to crisis situations where the need for rapid account activation is required. Therefore, emergency account activation may...Rule Medium Severity -
SRG-OS-000259-GPOS-00100
Group -
The IBM z/VM must restrict link access to the disk on which system software resides.
If the operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part ...Rule Medium Severity -
SRG-OS-000362-GPOS-00149
Group -
The IBM z/VM Privilege command class A and Class B must be properly assigned.
Allowing regular users to install software, without explicit privileges, creates the risk that untested or potentially malicious software will be installed on the system. Explicit privileges (escal...Rule Medium Severity -
SRG-OS-000364-GPOS-00151
Group -
CA VM:Secure AUTHORIZ CONFIG file must be properly configured.
Failure to provide logical access restrictions associated with changes to system configuration may have significant effects on the overall security of the system. When dealing with access restrict...Rule Medium Severity -
SRG-OS-000341-GPOS-00132
Group -
The IBM z/VM journal minidisk space allocation must be large enough for one weeks worth of audit records.
In order to ensure operating systems have a sufficient storage capacity in which to write the audit logs, operating systems need to be able to allocate audit record storage capacity. The task of a...Rule Medium Severity -
SRG-OS-000342-GPOS-00133
Group -
CA VM:Secure product audit records must offload audit records to a different system or media.
Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common process in information systems with limited audit storage capacity.Rule Medium Severity -
SRG-OS-000479-GPOS-00224
Group -
CA VM:Secure product audit records must be offloaded on a weekly basis.
Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common process in information systems with limited audit storage capacity.Rule Medium Severity -
SRG-OS-000379-GPOS-00164
Group -
The IBM z/VM Portmapper server virtual machine userID must be included in the AUTOLOG statement of the TCP/IP server configuration file.
Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. Bidirectional authentication provides stronger safeguards to validate the...Rule Medium Severity -
SRG-OS-000312-GPOS-00124
Group -
CA VM:Secure product MANAGE command must be restricted to system administrators.
Discretionary Access Control (DAC) is based on the notion that individual users are "owners" of objects and therefore have discretion over who should be authorized to access the object and in which...Rule Medium Severity -
SRG-OS-000326-GPOS-00126
Group -
The CA VM:Secure LOGONBY command must be restricted to system administrators.
In certain situations, software applications/programs need to execute with elevated privileges to perform required functions. However, if the privileges required for execution are at a higher level...Rule Medium Severity -
SRG-OS-000324-GPOS-00125
Group -
The IBM z/VM CP Privilege Class A, B, and D must be restricted to appropriate system operators.
Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or privileges. Privileg...Rule Medium Severity -
SRG-OS-000329-GPOS-00128
Group -
The IBM z/VM JOURNALING statement must be properly configured.
By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-forcing, is reduced. Limits are imposed by locking the a...Rule Medium Severity -
SRG-OS-000425-GPOS-00189
Group -
The IBM z/VM TCP/IP SECUREDATA option for FTP must be set to REQUIRED.
Information can be either unintentionally or maliciously disclosed or modified during preparation for transmission, for example, during aggregation, at protocol transformation points, and during pa...Rule Medium Severity -
SRG-OS-000297-GPOS-00115
Group -
IBM z/VM TCP/IP config file INTERNALCLIENTPARMS statement must be properly configured.
Remote access services, such as those providing remote access to network devices and information systems, which lack automated control capabilities, increase risk and make remote user access manage...Rule Medium Severity -
SRG-OS-000425-GPOS-00189
Group -
All IBM z/VM TCP/IP servers must be configured for SSL/TLS connection.
Information can be either unintentionally or maliciously disclosed or modified during preparation for transmission, for example, during aggregation, at protocol transformation points, and during pa...Rule Medium Severity
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