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ANSSI-BP-028 (high)

Rules and Groups employed by this XCCDF Profile

  • Verify Ownership on SSH Server Public *.pub Key Files

    SSH server public keys, files that match the /etc/ssh/*.pub glob, must be owned by root user.
    Rule Medium Severity
  • Verify Permissions on SSH Server config file

    To properly set the permissions of /etc/ssh/sshd_config, run the command:
    $ sudo chmod 0600 /etc/ssh/sshd_config
    Rule Medium Severity
  • Verify Permissions on SSH Server Private *_key Key Files

    SSH server private keys - files that match the <code>/etc/ssh/*_key</code> glob, have to have restricted permissions. If those files are owned by t...
    Rule Medium Severity
  • Verify Permissions on SSH Server Public *.pub Key Files

    To properly set the permissions of /etc/ssh/*.pub, run the command:
    $ sudo chmod 0644 /etc/ssh/*.pub
    Rule Medium Severity
  • Configure OpenSSH Server if Necessary

    If the system needs to act as an SSH server, then certain changes should be made to the OpenSSH daemon configuration file <code>/etc/ssh/sshd_confi...
    Group
  • Disable SSH Root Login

    The root user should never be allowed to login to a system directly over a network. To disable root login via SSH, add or correct the following lin...
    Rule Medium Severity
  • Configure Systemd Timer Execution of AIDE

    At a minimum, AIDE should be configured to run a weekly scan. To implement a systemd service and a timer unit to run the service periodically: For ...
    Rule Medium Severity
  • Record Attempts to perform maintenance activities

    The SUSE Linux Enterprise 15 operating system must generate audit records for privileged activities, nonlocal maintenance, diagnostic sessions and ...
    Rule Medium Severity
  • Ensure tmp.mount Unit Is Enabled

    The <code>/tmp</code> directory is a world-writable directory used for temporary file storage. This directory is managed by <code>systemd-tmpfiles<...
    Rule Low Severity
  • Verify Group Who Owns /etc/sudoers.d Directory

    To properly set the group owner of /etc/sudoers.d, run the command:
    $ sudo chgrp root /etc/sudoers.d
    Rule Medium Severity

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