IBM z/OS RACF Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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IBM z/OS SMF recording options for the SSH daemon must be configured to write SMF records for all eligible events.
<VulnDiscussion>SMF data collection is the basic unit of tracking of all system functions and actions. Included in this tracking data are the...Rule Medium Severity -
SRG-OS-000033-GPOS-00014
<GroupDescription></GroupDescription>Group -
SRG-OS-000104-GPOS-00051
<GroupDescription></GroupDescription>Group -
SRG-OS-000080-GPOS-00048
<GroupDescription></GroupDescription>Group -
The IBM RACF SSH daemon must be configured to use a FIPS 140-2 compliant cryptographic algorithm to protect confidential information and remote access sessions.
<VulnDiscussion>Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. Cryptographic ...Rule High Severity -
SRG-OS-000228-GPOS-00088
<GroupDescription></GroupDescription>Group -
The SSH daemon must be configured with the Standard Mandatory DoD Notice and Consent Banner.
<VulnDiscussion>Display of a standardized and approved use notification before granting access to the publicly accessible operating system en...Rule Medium Severity -
SRG-OS-000096-GPOS-00050
<GroupDescription></GroupDescription>Group -
IBM z/OS SSH daemon must be configured to only use the SSHv2 protocol.
<VulnDiscussion>In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e....Rule High Severity -
SRG-OS-000068-GPOS-00036
<GroupDescription></GroupDescription>Group -
IBM z/OS, for PKI-based authentication, must use the ICSF or ESM for key management.
<VulnDiscussion>Without mapping the certificate used to authenticate to the user account, the ability to determine the identity of the indivi...Rule Medium Severity -
SRG-OS-000080-GPOS-00048
<GroupDescription></GroupDescription>Group -
IBM z/OS permission bits and user audit bits for HFS objects that are part of the Syslog daemon component must be properly configured.
<VulnDiscussion>HFS directories and files of the Syslog daemon provide the configuration and executable properties of this product. Failure t...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The IBM z/OS Syslog daemon must be started at z/OS initialization.
<VulnDiscussion>To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to pre...Rule Medium Severity -
SRG-OS-000104-GPOS-00051
<GroupDescription></GroupDescription>Group -
The IBM z/OS Syslog daemon must be properly defined and secured.
<VulnDiscussion>The Syslog daemon, known as syslogd, is a zOS UNIX daemon that provides a central processing point for log messages issued by...Rule Medium Severity -
SRG-OS-000080-GPOS-00048
<GroupDescription></GroupDescription>Group -
IBM z/OS DFSMS Program Resources must be properly defined and protected.
<VulnDiscussion>To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-ap...Rule Medium Severity -
SRG-OS-000080-GPOS-00048
<GroupDescription></GroupDescription>Group -
IBM z/OS DFSMS control data sets must be protected in accordance with security requirements.
<VulnDiscussion>To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-ap...Rule Medium Severity -
IBM z/OS DFSMS-related RACF classes must be active.
<VulnDiscussion>To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-ap...Rule Medium Severity -
SRG-OS-000080-GPOS-00048
<GroupDescription></GroupDescription>Group -
IBM z/OS DFSMS resources must be protected in accordance with the proper security requirements.
<VulnDiscussion>To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-ap...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
IBM z/OS using DFSMS must properly specify SYS(x).PARMLIB(IGDSMSxx), SMS parameter settings.
<VulnDiscussion>Configuring the operating system to implement organization-wide security implementation guides and security checklists ensure...Rule Medium Severity -
SRG-OS-000032-GPOS-00013
<GroupDescription></GroupDescription>Group -
IBM z/OS PROFILE.TCPIP configuration statements for the TCP/IP stack must be coded properly.
<VulnDiscussion>Remote access services, such as those providing remote access to network devices and information systems, which lack automate...Rule Medium Severity -
SRG-OS-000297-GPOS-00115
<GroupDescription></GroupDescription>Group -
IBM z/OS Configuration files for the TCP/IP stack must be properly specified.
<VulnDiscussion>Configuring the operating system to implement organization-wide security implementation guides and security checklists ensure...Rule Medium Severity -
SRG-OS-000033-GPOS-00014
<GroupDescription></GroupDescription>Group -
The IBM RACF classes required to properly secure the z/OS UNIX environment must be ACTIVE.
<VulnDiscussion>In certain situations, software applications/programs need to execute with elevated privileges to perform required functions....Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
IBM z/OS must be configured to restrict all TCP/IP ports to ports, protocols, and/or services as defined in the PPSM CAL and vulnerability assessments.
<VulnDiscussion>Remote access services, such as those providing remote access to network devices and information systems, which lack automate...Rule Medium Severity -
SRG-OS-000080-GPOS-00048
<GroupDescription></GroupDescription>Group -
IBM z/OS permission bits and user audit bits for HFS objects that are part of the Base TCP/IP component must be properly configured.
<VulnDiscussion>HFS directories and files of the Base TCP/IP component provide the configuration, operational, and executable properties of I...Rule Medium Severity -
SRG-OS-000080-GPOS-00048
<GroupDescription></GroupDescription>Group -
IBM z/OS TCP/IP resources must be properly protected.
<VulnDiscussion>To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-ap...Rule Medium Severity -
SRG-OS-000080-GPOS-00048
<GroupDescription></GroupDescription>Group -
The IBM RACF SERVAUTH resource class must be active for TCP/IP resources.
<VulnDiscussion>IBM Provides the SERVAUTH Class for use in protecting a variety of TCP/IP features/functions/products both IBM and third-part...Rule Medium Severity -
SRG-OS-000080-GPOS-00048
<GroupDescription></GroupDescription>Group -
IBM z/OS data sets for the Base TCP/IP component must be properly protected.
<VulnDiscussion>MVS data sets of the Base TCP/IP component provide the configuration, operational, and executable properties of IBMs TCP/IP s...Rule Medium Severity -
SRG-OS-000324-GPOS-00125
<GroupDescription></GroupDescription>Group -
IBM z/OS SSL encryption options for the TN3270 Telnet Server must be specified properly for each statement that defines a SECUREPORT or within the TELNETGLOBALS.
<VulnDiscussion>During the SSL connection process a mutually acceptable encryption algorithm is selected by the server and client. This algor...Rule Medium Severity -
SRG-OS-000228-GPOS-00088
<GroupDescription></GroupDescription>Group -
The IBM z/OS warning banner for the TN3270 Telnet server must contain the proper content of the Standard Mandatory DoD Notice and Consent Banner.
<VulnDiscussion>System use notifications are required only for access via logon interfaces with human users and are not required when such hu...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
IBM z/OS VTAM session setup controls for the TN3270 Telnet server must be properly specified.
<VulnDiscussion>Configuring the operating system to implement organization-wide security implementation guides and security checklists ensure...Rule Medium Severity -
SRG-OS-000163-GPOS-00072
<GroupDescription></GroupDescription>Group -
The IBM z/OS PROFILE.TCPIP configuration for the TN3270 Telnet server must have the INACTIVE statement properly specified.
<VulnDiscussion>Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take c...Rule Medium Severity
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