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CIS Ubuntu 20.04 Level 2 Server Benchmark

Rules and Groups employed by this XCCDF Profile

  • Services

    The best protection against vulnerable software is running less software. This section describes how to review the software which Ubuntu 20.04 inst...
    Group
  • Avahi Server

    The Avahi daemon implements the DNS Service Discovery and Multicast DNS protocols, which provide service and host discovery on a network. It allows...
    Group
  • Disable Avahi Server if Possible

    Because the Avahi daemon service keeps an open network port, it is subject to network attacks. Disabling it can reduce the system's vulnerability t...
    Group
  • Uninstall avahi Server Package

    If the system does not need to have an Avahi server which implements the DNS Service Discovery and Multicast DNS protocols, the avahi-autoipd and a...
    Rule Medium Severity
  • Disable Avahi Server Software

    The avahi-daemon service can be disabled with the following command:
    $ sudo systemctl mask --now avahi-daemon.service
    Rule Medium Severity
  • Cron and At Daemons

    The cron and at services are used to allow commands to be executed at a later time. The cron service is required by almost all systems to perform n...
    Group
  • Enable cron Service

    The <code>crond</code> service is used to execute commands at preconfigured times. It is required by almost all systems to perform necessary mainte...
    Rule Medium Severity
  • Verify Group Who Owns cron.d

    To properly set the group owner of /etc/cron.d, run the command:
    $ sudo chgrp root /etc/cron.d
    Rule Medium Severity
  • Verify Group Who Owns cron.daily

    To properly set the group owner of /etc/cron.daily, run the command:
    $ sudo chgrp root /etc/cron.daily
    Rule Medium Severity
  • Verify Group Who Owns cron.hourly

    To properly set the group owner of /etc/cron.hourly, run the command:
    $ sudo chgrp root /etc/cron.hourly
    Rule Medium Severity
  • Verify Group Who Owns cron.monthly

    To properly set the group owner of /etc/cron.monthly, run the command:
    $ sudo chgrp root /etc/cron.monthly
    Rule Medium Severity
  • Verify Group Who Owns cron.weekly

    To properly set the group owner of /etc/cron.weekly, run the command:
    $ sudo chgrp root /etc/cron.weekly
    Rule Medium Severity
  • Verify Group Who Owns Crontab

    To properly set the group owner of /etc/crontab, run the command:
    $ sudo chgrp root /etc/crontab
    Rule Medium Severity
  • Verify Owner on cron.d

    To properly set the owner of /etc/cron.d, run the command:
    $ sudo chown root /etc/cron.d 
    Rule Medium Severity
  • Verify Owner on cron.daily

    To properly set the owner of /etc/cron.daily, run the command:
    $ sudo chown root /etc/cron.daily 
    Rule Medium Severity
  • Verify Owner on cron.hourly

    To properly set the owner of /etc/cron.hourly, run the command:
    $ sudo chown root /etc/cron.hourly 
    Rule Medium Severity
  • Verify Owner on cron.monthly

    To properly set the owner of /etc/cron.monthly, run the command:
    $ sudo chown root /etc/cron.monthly 
    Rule Medium Severity
  • Verify Owner on cron.weekly

    To properly set the owner of /etc/cron.weekly, run the command:
    $ sudo chown root /etc/cron.weekly 
    Rule Medium Severity
  • Verify Owner on crontab

    To properly set the owner of /etc/crontab, run the command:
    $ sudo chown root /etc/crontab 
    Rule Medium Severity
  • Verify Permissions on cron.d

    To properly set the permissions of /etc/cron.d, run the command:
    $ sudo chmod 0700 /etc/cron.d
    Rule Medium Severity

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