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ANSSI-BP-028 (high)

Rules and Groups employed by this XCCDF Profile

  • Verify Ownership on SSH Server Private *_key Key Files

    SSH server private keys, files that match the /etc/ssh/*_key glob, must be owned by root user.
    Rule Medium Severity
  • 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 the <code>root</code> user and the <code>root</code...
    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_config</code>. The following recommendations can be app...
    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 line in <code>/etc/ssh/sshd_config</code>: <pre>Pe...
    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 example, if a systemd timer is expected to be star...
    Rule Medium Severity
  • Record Attempts to perform maintenance activities

    The SUSE Linux Enterprise 12 operating system must generate audit records for privileged activities, nonlocal maintenance, diagnostic sessions and other system-level access. Verify the operating s...
    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</code>. Ensure that the <code>tmp.mount</code> sys...
    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
  • Verify User Who Owns /etc/sudoers.d Directory

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

    To properly set the permissions of /etc/sudoers.d, run the command:
    $ sudo chmod 0750 /etc/sudoers.d
    Rule Medium Severity
  • Verify Group Who Owns /etc/sudoers File

    To properly set the group owner of /etc/sudoers, run the command:
    $ sudo chgrp root /etc/sudoers
    Rule Medium Severity
  • Verify User Who Owns /etc/sudoers File

    To properly set the owner of /etc/sudoers, run the command:
    $ sudo chown root /etc/sudoers 
    Rule Medium Severity
  • Verify Permissions On /etc/sudoers File

    To properly set the permissions of /etc/sudoers, run the command:
    $ sudo chmod 0440 /etc/sudoers
    Rule Medium Severity
  • Ensure That the sudo Binary Has the Correct Permissions

    To properly set the permissions of /usr/bin/sudo, run the command:
    $ sudo chmod 4111 /usr/bin/sudo
    Rule Medium Severity
  • Ensure PAM Enforces Password Requirements - Minimum Different Categories

    The pam_pwquality module's <code>minclass</code> parameter controls requirements for usage of different character classes, or types, of character that must exist in a password before it is consider...
    Rule Medium Severity
  • Ensure PAM Enforces Password Requirements - Authentication Retry Prompts Permitted Per-Session

    To configure the number of retry prompts that are permitted per-session: Edit the <code>pam_pwquality.so</code> statement in <code>/etc/pam.d/system-auth</code> to show <code>retry=<xccdf-1.2:s...
    Rule Medium Severity
  • Configure Logind to terminate idle sessions after certain time of inactivity

    To configure <code>logind</code> service to terminate inactive user sessions after <xccdf-1.2:sub idref="xccdf_org.ssgproject.content_value_var_logind_session_timeout" use="legacy"></xccdf-1.2:sub>...
    Rule Medium Severity

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