ANSSI-BP-028 (intermediary)
Rules and Groups employed by this XCCDF Profile
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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.d/00-compliancea...Rule Medium Severity -
System Security Services Daemon
The System Security Services Daemon (SSSD) is a system daemon that provides access to different identity and authentication providers such as Red Hat's IdM, Microsoft's AD, openLDAP, MIT Kerberos, ...Group -
System Security Services Daemon (SSSD) - LDAP
The System Security Services Daemon (SSSD) is a system daemon that provides access to different identity and authentication providers such as Red Hat's IdM, Microsoft's AD, openLDAP, MIT Kerberos, ...Group -
Ensure tmp.mount Unit Us 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 -
Set Root Account Password Maximum Age
Configure the root account to enforce a <xccdf-1.2:sub idref="xccdf_org.ssgproject.content_value_var_accounts_maximum_age_root" use="legacy"></xccdf-1.2:sub>-day maximum password lifetime restricti...Rule Medium Severity -
User Initialization Files Must Be Group-Owned By The Primary Group
Change the group owner of interactive users files to the group found in <pre>/etc/passwd</pre> for the user. To change the group owner of a local interactive user home directory, use the following ...Rule Medium Severity -
User Initialization Files Must Be Owned By the Primary User
Set the owner of the user initialization files for interactive users to the primary owner with the following command: <pre>$ sudo chown <i>USER</i> /home/<i>USER</i>/.*</pre> This rule ensures eve...Rule Medium Severity -
All User Files and Directories In The Home Directory Must Be Group-Owned By The Primary Group
Change the group of a local interactive users files and directories to a group that the interactive user is a member of. To change the group owner of a local interactive users files and directories...Rule Medium Severity -
All User Files and Directories In The Home Directory Must Have a Valid Owner
Either remove all files and directories from the system that do not have a valid user, or assign a valid user to all unowned files and directories. To assign a valid owner to a local interactive us...Rule Medium Severity -
All User Files and Directories In The Home Directory Must Have Mode 0750 Or Less Permissive
Set the mode on files and directories in the local interactive user home directory with the following command: <pre>$ sudo chmod 0750 /home/<i>USER</i>/<i>FILE_DIR</i> </pre> Files ...Rule Medium Severity -
Verify Group Who Owns /etc/ipsec.d Directory
To properly set the group owner of/etc/ipsec.d
, run the command:$ sudo chgrp root /etc/ipsec.d
Rule Medium Severity -
Verify User Who Owns /etc/ipsec.d Directory
To properly set the owner of/etc/ipsec.d
, run the command:$ sudo chown root /etc/ipsec.d
Rule Medium Severity
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