IBM z/OS ACF2 Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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IBM z/OS UNIX HFS MapName files security parameters must be properly specified.
<VulnDiscussion>Removal of unneeded or non-secure functions, ports, protocols, and services mitigate the risk of unauthorized connection of d...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
IBM z/OS UNIX BPXPRMxx security parameters in PARMLIB must be properly specified.
<VulnDiscussion>Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the sys...Rule Medium Severity -
SRG-OS-000096-GPOS-00050
<GroupDescription></GroupDescription>Group -
IBM z/OS User exits for the FTP Server must not be used without proper approval and documentation.
<VulnDiscussion>In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e....Rule Medium Severity -
SRG-OS-000096-GPOS-00050
<GroupDescription></GroupDescription>Group -
IBM z/OS UNIX security parameters for restricted network service(s) in /etc/inetd.conf must be properly specified.
<VulnDiscussion>In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e....Rule Medium Severity -
SRG-OS-000104-GPOS-00051
<GroupDescription></GroupDescription>Group -
IBM z/OS user account for the z/OS UNIX SUPERSUSER userid must be properly defined.
<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 -
IBM z/OS UNIX user accounts must be properly defined.
<VulnDiscussion>To ensure 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 -
IBM z/OS UNIX groups must be defined with a unique GID.
<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 -
IBM z/OS Attributes of z/OS UNIX user accounts must have a unique GID in the range of 1-99.
<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 -
IBM z/OS Attributes of UNIX user accounts used for account modeling must be defined in accordance with security requirements.
<VulnDiscussion>To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to pre...Rule Medium Severity -
SRG-OS-000080-GPOS-00048
<GroupDescription></GroupDescription>Group -
IBM z/OS System data sets used to support the VTAM network must be properly secured.
<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 startup user account for the z/OS UNIX Telnet Server must be defined properly.
<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 HFS objects for the z/OS UNIX Telnet Server 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-000024-GPOS-00007
<GroupDescription></GroupDescription>Group -
IBM z/OS UNIX Telnet Server etc/banner file must have the Standard Mandatory DoD Notice and Consent Banner.
<VulnDiscussion>A logon banner can be used to inform users about the environment during the initial logon. In the DISA environment, logon ban...Rule Medium Severity -
SRG-OS-000228-GPOS-00088
<GroupDescription></GroupDescription>Group -
IBM z/OS UNIX Telnet Server warning banner must be properly specified.
<VulnDiscussion>Display of a standardized and approved use notification before granting access to the publicly accessible operating system en...Rule Medium Severity -
SRG-OS-000228-GPOS-00088
<GroupDescription></GroupDescription>Group -
IBM z/OS UNIX Telnet Server Startup parameters must be properly specified to display the 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-000080-GPOS-00048
<GroupDescription></GroupDescription>Group -
SRG-OS-000259-GPOS-00100
<GroupDescription></GroupDescription>Group -
IBM Integrated Crypto Service Facility (ICSF) Configuration parameters must be correctly specified.
<VulnDiscussion>IBM Integrated Crypto Service Facility (ICSF) product has the ability to use privileged functions and/or have access to sensi...Rule Medium Severity -
IBM z/OS VTAM USSTAB definitions must not be used for unsecured terminals.
<VulnDiscussion>If the operating system were to allow any user to make changes to software libraries, then those changes might be implemented...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
IBM z/OS TCPIP.DATA configuration statement must contain the DOMAINORIGIN or DOMAIN specified for each TCP/IP defined.
<VulnDiscussion>If data origin authentication and data integrity verification are not performed, the resultant response could be forged, it m...Rule Medium Severity -
SRG-OS-000080-GPOS-00048
<GroupDescription></GroupDescription>Group -
IBM z/OS TCP/IP AT-TLS policy must be properly configured in Policy Agent.
<VulnDiscussion>If events associated with nonlocal administrative access or diagnostic sessions are not logged, a major tool for assessing an...Rule Medium Severity -
SRG-OS-000481-GPOS-00481
<GroupDescription></GroupDescription>Group -
IBM z/OS must enforce a minimum eight character password length.
<VulnDiscussion>The shorter the password, the lower the number of possible combinations that need to be tested before the password is comprom...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
IBM z/OS FTP.DATA configuration statements for the FTP Server must be specified in accordance with requirements.
<VulnDiscussion>This requirement is intended to cover both traditional interactive logons to information systems and general accesses to info...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
IBM Integrated Crypto Service Facility (ICSF) Started Task name must be properly identified / defined to the system ACP.
<VulnDiscussion>IBM Integrated Crypto Service Facility (ICSF) requires a started task that will be restricted to certain resources, datasets ...Rule Medium Severity -
SRG-OS-000259-GPOS-00100
<GroupDescription></GroupDescription>Group -
IBM Integrated Crypto Service Facility (ICSF) STC data sets must be properly protected.
<VulnDiscussion>IBM Integrated Crypto Service Facility (ICSF) STC data sets have the ability to use privileged functions and/or have access t...Rule Medium Severity
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