Unclassified Information in Non-federal Information Systems and Organizations (NIST 800-171)
Rules and Groups employed by this XCCDF Profile
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Configure auditing of unsuccessful permission changes
Ensure that unsuccessful attempts to change file or directory permissions are audited. The following rules configure audit as described above: <pr...Rule Medium Severity -
Configure auditing of successful permission changes
Ensure that successful attempts to modify permissions of files or directories are audited. The following rules configure audit as described above:...Rule Medium Severity -
GRUB2 bootloader configuration
During the boot process, the boot loader is responsible for starting the execution of the kernel and passing options to it. The boot loader allows ...Group -
Disable Recovery Booting
Red Hat Enterprise Linux 8 systems support an "recovery boot" option that can be used to prevent services from being started. The <code>GRUB_DISABL...Rule Medium Severity -
Configure kernel to trust the CPU random number generator
There exist two ways how to ensure that the Linux kernel trusts the CPU hardware random number generator. If the option is configured during kernel...Rule Medium Severity -
Enable Kernel Page-Table Isolation (KPTI)
To enable Kernel page-table isolation, add the argument <code>pti=on</code> to the default GRUB 2 command line for the Linux operating system. To e...Rule Low Severity -
Disable vsyscalls
To disable use of virtual syscalls, add the argument <code>vsyscall=none</code> to the default GRUB 2 command line for the Linux operating system. ...Rule Medium Severity -
UEFI GRUB2 bootloader configuration
UEFI GRUB2 bootloader configurationGroup -
Set the UEFI Boot Loader Password
The grub2 boot loader should have a superuser account and password protection enabled to protect boot-time settings. <br><br> Since plaintext passw...Rule High Severity -
zIPL bootloader configuration
During the boot process, the bootloader is responsible for starting the execution of the kernel and passing options to it. The default Red Hat Ente...Group -
Enable Auditing to Start Prior to the Audit Daemon in zIPL
To ensure all processes can be audited, even those which start prior to the audit daemon, check that all boot entries in <code>/boot/loader/entries...Rule Medium Severity -
Extend Audit Backlog Limit for the Audit Daemon in zIPL
To improve the kernel capacity to queue all log events, even those which start prior to the audit daemon, check that all boot entries in <code>/boo...Rule Medium Severity -
Ensure all zIPL boot entries are BLS compliant
Ensure that zIPL boot entries fully adheres to Boot Loader Specification (BLS) by checking that <code>/etc/zipl.conf</code> doesn't contain <code>i...Rule Medium Severity -
Ensure zIPL bootmap is up to date
Make sure that <code>/boot/bootmap</code> is up to date.<br> Every time a boot entry or zIPL configuration is changed <code>/boot/bootmap</code> ne...Rule Medium Severity -
Enable page allocator poisoning in zIPL
To enable poisoning of free pages, check that all boot entries in <code>/boot/loader/entries/*.conf</code> have <code>page_poison=1</code> included...Rule Medium Severity -
Enable SLUB/SLAB allocator poisoning in zIPL
To enable poisoning of SLUB/SLAB objects, check that all boot entries in <code>/boot/loader/entries/*.conf</code> have <code>slub_debug=P</code> in...Rule Medium Severity -
Configure Syslog
The syslog service has been the default Unix logging mechanism for many years. It has a number of downsides, including inconsistent log format, lac...Group -
Ensure rsyslog is Installed
Rsyslog is installed by default. Thersyslogpackage can be installed with the following command:$ sudo yum install rsyslog
Rule Medium Severity -
Network Configuration and Firewalls
Most systems must be connected to a network of some sort, and this brings with it the substantial risk of network attack. This section discusses th...Group -
firewalld
The dynamic firewall daemon <code>firewalld</code> provides a dynamically managed firewall with support for network “zones” to assign a level of tr...Group
Node 2
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