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Guide to the Secure Configuration of Ubuntu 20.04

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Ensure AppArmor is installed

    AppArmor provide Mandatory Access Controls.
    Rule Medium Severity
  • Enforce all AppArmor Profiles

    AppArmor profiles define what resources applications are able to access. To set all profiles to enforce mode run the following command: <pre>$ sudo...
    Rule Medium Severity
  • All AppArmor Profiles are in enforce or complain mode

    AppArmor profiles define what resources applications are able to access. To set all profiles to either <code>enforce</code> or <code>complain</code...
    Rule Medium Severity
  • Ensure AppArmor is Active and Configured

    Verify that the Apparmor tool is configured to control whitelisted applications and user home directory access control.<br><br> The <code>apparmor...
    Rule Medium Severity
  • authlogin_radius SELinux Boolean

    default - Default SELinux boolean setting.
    on - SELinux boolean is enabled.
    off - SELinux boolean is disabled.
    Value
  • net.ipv6.conf.all.accept_source_route

    Trackers could be using source-routed packets to generate traffic that seems to be intra-net, but actually was created outside and has been redirec...
    Value
  • UEFI GRUB2 bootloader configuration

    UEFI GRUB2 bootloader configuration
    Group
  • net.ipv6.conf.all.autoconf

    Enable auto configuration on IPv6 interfaces
    Value
  • net.ipv6.conf.all.forwarding

    Toggle IPv6 Forwarding
    Value
  • net.ipv6.conf.all.max_addresses

    Maximum number of autoconfigured IPv6 addresses
    Value
  • systemd-journald

    systemd-journald is a system service that collects and stores logging data. It creates and maintains structured, indexed journals based on logging ...
    Group
  • net.ipv6.conf.all.router_solicitations

    Accept all router solicitations?
    Value
  • net.ipv6.conf.default.accept_ra_defrtr

    Accept default router in router advertisements?
    Value
  • Ensure AppArmor is enabled in the bootloader configuration

    Configure AppArmor to be enabled at boot time and verify that it has not been overwritten by the bootloader boot parameters. Note: This recommenda...
    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
  • L1TF vulnerability mitigation

    Defines the L1TF vulneratility mitigations to employ.
    Value
  • MDS vulnerability mitigation

    Defines the MDS vulneratility mitigation to employ.
    Value
  • Confidence level on Hardware Random Number Generator

    Defines the level of trust on the hardware random number generators available in the system and the percentage of entropy to credit.
    Value
  • Spec Store Bypass Mitigation

    This controls how the Speculative Store Bypass (SSB) vulnerability is mitigated.
    Value
  • net.ipv6.conf.default.accept_ra_pinfo

    Accept prefix information in router advertisements?
    Value

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