Guide to the Secure Configuration of Red Hat Enterprise Linux 9
Rules, Groups, and Values defined within the XCCDF Benchmark
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Set the UEFI Boot Loader Admin Username to a Non-Default Value
The grub2 boot loader should have a superuser account and password protection enabled to protect boot-time settings. <br><br> To maximize the prote...Rule Medium Severity -
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 -
Protect Random-Number Entropy Pool
The I/O operations of the Linux kernel block layer due to their inherently unpredictable execution times have been traditionally considered as a re...Group -
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 -
Ensure SELinux Not Disabled in zIPL
To ensure SELinux is not disabled at boot time, check that no boot entry in <code>/boot/loader/entries/*.conf</code> has <code>selinux=0</code> inc...Rule Medium Severity -
Configure kernel to zero out memory before allocation in zIPL
To ensure that the kernel is configured to zero out memory before allocation, check that all boot entries in <code>/boot/loader/entries/*.conf</cod...Rule Medium Severity
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