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Guide to the Secure Configuration of Red Hat Enterprise Linux CoreOS 4

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Ensure all zIPL boot entries are BLS compliant

    Ensure that zIPL boot entries fully adheres to Boot Loader Specification (BLS) by checking that /etc/zipl.conf doesn't contain image = .
    Rule Medium Severity
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  • 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> needs to be updated to reflect the changes.<br> Run ...
    Rule Medium Severity
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  • Ensure SELinux Not Disabled in zIPL

    To ensure SELinux is not disabled at boot time, check that no boot entry in /boot/loader/entries/*.conf has selinux=0 included in its options.
    Rule Medium Severity
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  • 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 in its options.<br> To ensure that new kernels an...
    Rule Medium Severity
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  • 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> included in its options.<br> To ensure that new kern...
    Rule Medium Severity
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  • Disable vsyscalls in zIPL

    To disable use of virtual syscalls, check that all boot entries in <code>/boot/loader/entries/*.conf</code> have <code>vsyscall=none</code> included in its options.<br> To ensure that new kernels a...
    Rule Medium Severity
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  • 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 reliable source to contribute to random-number entro...
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  • Kernel Configuration

    Contains rules that check the kernel configuration that was used to build it.
    Group
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  • Hash function for kernel module signing

    The hash function to use when signing modules during kernel build process.
    Value
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  • Key and certificate for kernel module signing

    The private key and certificate to use when signing modules during kernel build process. On systems where the OpenSSL ENGINE_pkcs11 is functional — a PKCS#11 URI as defined by RFC7512 In the latter...
    Value
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