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Guide to the Secure Configuration of Ubuntu 22.04

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Ensure AppArmor is installed

    AppArmor provide Mandatory Access Controls.
    Rule Medium Severity
    Show

  • 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
    Show

  • 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
    Show

  • 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
    Show

  • authlogin_yubikey SELinux Boolean

    default - Default SELinux boolean setting.
    on - SELinux boolean is enabled.
    off - SELinux boolean is disabled.
    Value
    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 Ubuntu 22.04...
    Group
    Show

  • git_cgi_use_cifs SELinux Boolean

    default - Default SELinux boolean setting.
    on - SELinux boolean is enabled.
    off - SELinux boolean is disabled.
    Value
    Show

  • Network Related Kernel Runtime Parameters for Hosts and Routers

    Certain kernel parameters should be set for systems which are acting as either hosts or routers to improve the system's ability defend against cert...
    Group
    Show

  • net.ipv4.conf.all.accept_redirects

    Disable ICMP Redirect Acceptance
    Value
    Show

  • git_cgi_use_nfs SELinux Boolean

    default - Default SELinux boolean setting.
    on - SELinux boolean is enabled.
    off - SELinux boolean is disabled.
    Value
    Show

  • 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
    Show

  • 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
    Show

  • L1TF vulnerability mitigation

    Defines the L1TF vulneratility mitigations to employ.
    Value
    Show

  • MDS vulnerability mitigation

    Defines the MDS vulneratility mitigation to employ.
    Value
    Show

  • 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
    Show

  • Spec Store Bypass Mitigation

    This controls how the Speculative Store Bypass (SSB) vulnerability is mitigated.
    Value
    Show

  • Disable Recovery Booting

    Ubuntu 22.04 systems support an "recovery boot" option that can be used to prevent services from being started. The <code>GRUB_DISABLE_RECOVERY</co...
    Rule Medium Severity
    Show

  • IOMMU configuration directive

    On x86 architecture supporting VT-d, the IOMMU manages the access control policy between the hardware devices and some of the system critical u...
    Rule Unknown Severity
    Show

  • net.ipv4.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
    Show

  • Configure L1 Terminal Fault mitigations

    L1 Terminal Fault (L1TF) is a hardware vulnerability which allows unprivileged speculative access to data which is available in the Level 1 Data Ca...
    Rule High Severity
    Show

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