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Guide to the Secure Configuration of Red Hat Enterprise Linux 8

Rules, Groups, and Values defined within the XCCDF Benchmark

  • 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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  • net.ipv4.icmp_ignore_bogus_error_responses

    Enable to prevent unnecessary logging
    Value
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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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  • Kernel panic timeout

    The time, in seconds, to wait until a reboot occurs. If the value is 0 the system never reboots. If the value is less than 0 the system reboots immediately.
    Value
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  • Do not allow ACPI methods to be inserted/replaced at run time

    This debug facility allows ACPI AML methods to be inserted and/or replaced without rebooting the system. This configuration is available from kernel 3.0. The configuration that was used to build k...
    Rule Low Severity
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  • Emulate Privileged Access Never (PAN)

    Enabling this option prevents the kernel from accessing user-space memory directly by pointing TTBR0_EL1 to a reserved zeroed area and reserved ASID. The user access routines restore the valid TTBR...
    Rule Medium Severity
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  • Disable kernel support for MISC binaries

    Enabling <code>CONFIG_BINFMT_MISC</code> makes it possible to plug wrapper-driven binary formats into the kernel. This is specially useful for programs that need an interpreter to run like Java, Py...
    Rule Medium Severity
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  • Enable support for BUG()

    Disabling this option eliminates support for BUG and WARN, reducing the size of your kernel image and potentially quietly ignoring numerous fatal conditions. You should only consider disabling this...
    Rule Medium Severity
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