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Guide to the Secure Configuration of OpenEmbedded

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Configure Speculative Store Bypass Mitigation

    Certain CPUs are vulnerable to an exploit against a common wide industry wide performance optimization known as Speculative Store Bypass (SSB). In...
    Rule Medium Severity
    Show

  • Enforce Spectre v2 mitigation

    Spectre V2 is an indirect branch poisoning attack that can lead to data leakage. An exploit for Spectre V2 tricks the indirect branch predictor int...
    Rule High Severity
    Show

  • Ensure debug-shell service is not enabled during boot

    systemd's <code>debug-shell</code> service is intended to diagnose systemd related boot issues with various <code>systemctl</code> commands. Once e...
    Rule Medium Severity
    Show

  • Non-UEFI GRUB2 bootloader configuration

    Non-UEFI GRUB2 bootloader configuration
    Group
    Show

  • Verify /boot/grub2/grub.cfg Group Ownership

    The file <code>/boot/grub2/grub.cfg</code> should be group-owned by the <code>root</code> group to prevent destruction or modification of the file....
    Rule Medium Severity
    Show

  • Verify /boot/grub2/grub.cfg User Ownership

    The file <code>/boot/grub2/grub.cfg</code> should be owned by the <code>root</code> user to prevent destruction or modification of the file. To pr...
    Rule Medium Severity
    Show

  • Verify /boot/grub2/grub.cfg Permissions

    File permissions for <code>/boot/grub2/grub.cfg</code> should be set to 600. To properly set the permissions of <code>/boot/grub2/grub.cfg</code>,...
    Rule Medium Severity
    Show

  • Set Boot Loader Password in grub2

    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
    Show

  • UEFI GRUB2 bootloader configuration

    UEFI GRUB2 bootloader configuration
    Group
    Show

  • 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 OpenEmbedded...
    Group
    Show

  • 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
    Show

  • 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 prog...
    Rule Medium Severity
    Show

  • 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 c...
    Rule Medium Severity
    Show

  • Disable compatibility with brk()

    Enabling compatiliby with <code>brk()</code> allows legacy binaries to run (i.e. those linked against libc5). But this compatibility comes at the c...
    Rule Medium Severity
    Show

  • Disable the 32-bit vDSO

    Certain buggy versions of glibc (2.3.3) will crash if they are presented with a 32-bit vDSO that is not mapped at the address indicated in its segm...
    Rule Low Severity
    Show

  • Enable checks on credential management

    Enable this to turn on some debug checking for credential management. The additional code keeps track of the number of pointers from task_structs t...
    Rule Low Severity
    Show

  • Disable kernel debugfs

    <code>debugfs</code> is a virtual file system that kernel developers use to put debugging files into. Enable this option to be able to read and wri...
    Rule Low Severity
    Show

  • Enable checks on linked list manipulation

    Enable this to turn on extended checks in the linked-list walking routines. The configuration that was used to build kernel is available at <code>...
    Rule Low Severity
    Show

  • Enable checks on notifier call chains

    Enable this to turn on sanity checking for notifier call chains. This is most useful for kernel developers to make sure that modules properly unreg...
    Rule Low Severity
    Show

  • Enable checks on scatter-gather (SG) table operations

    Scatter-gather tables are mechanism used for high performance I/O on DMA devices. Enable this to turn on checks on scatter-gather tables. The conf...
    Rule Low Severity
    Show

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siemur/test-space

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