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Guide to the Secure Configuration of Red Hat Enterprise Linux 9

Rules, Groups, and Values defined within the XCCDF Benchmark

  • An SELinux Context must be configured for the pam_faillock.so records directory

    The <code>dir</code> configuration option in PAM pam_faillock.so module defines where the lockout records is stored. The configured directory must ...
    Rule Medium Severity
    Show

  • Install scap-security-guide Package

    The scap-security-guide package can be installed with the following command: 
    $ sudo dnf install scap-security-guide
    Rule Medium Severity
    Show

  • Install subscription-manager Package

    The subscription-manager package can be installed with the following command: 
    $ sudo dnf install subscription-manager
    Rule Medium Severity
    Show

  • Uninstall geolite2-city Package

    The geolite2-city package can be removed with the following command: 
    $ sudo dnf erase geolite2-city
    Rule Low Severity
    Show

  • Uninstall geolite2-country Package

    The geolite2-country package can be removed with the following command: 
    $ sudo dnf erase geolite2-country
    Rule Low Severity
    Show

  • Uninstall gssproxy Package

    The gssproxy package can be removed with the following command: 
    $ sudo dnf erase gssproxy
    Rule Medium Severity
    Show

  • Uninstall iprutils Package

    The iprutils package can be removed with the following command: 
    $ sudo dnf erase iprutils
    Rule Medium Severity
    Show

  • Uninstall krb5-workstation Package

    The krb5-workstation package can be removed with the following command: 
    $ sudo dnf erase krb5-workstation
    Rule Medium Severity
    Show

  • Uninstall tuned Package

    The tuned package can be removed with the following command: 
    $ sudo dnf erase tuned
    Rule Medium Severity
    Show

  • Updating Software

    The <code>dnf</code> command line tool is used to install and update software packages. The system also provides a graphical software update tool i...
    Group
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  • Install dnf-automatic Package

    The dnf-automatic package can be installed with the following command: 
    $ sudo dnf install dnf-automatic
    Rule Medium Severity
    Show

  • Ensure dnf Removes Previous Package Versions

    <code>dnf</code> should be configured to remove previous software components after new versions have been installed. To configure <code>dnf</code> ...
    Rule Low Severity
    Show

  • Configure dnf-automatic to Install Available Updates Automatically

    To ensure that the packages comprising the available updates will be automatically installed by <code>dnf-automatic</code>, set <code>apply_updates...
    Rule Medium Severity
    Show

  • retry

    Number of retry attempts before erroring out
    Value
    Show

  • Ensure gpgcheck Enabled In Main dnf Configuration

    The <code>gpgcheck</code> option controls whether RPM packages' signatures are always checked prior to installation. To configure dnf to check pack...
    Rule High Severity
    Show

  • Ensure gpgcheck Enabled for Local Packages

    <code>dnf</code> should be configured to verify the signature(s) of local packages prior to installation. To configure <code>dnf</code> to verify s...
    Rule High Severity
    Show

  • Ensure gpgcheck Enabled for All dnf Package Repositories

    To ensure signature checking is not disabled for any repos, remove any lines from files in <code>/etc/yum.repos.d</code> of the form: <pre>gpgcheck...
    Rule High Severity
    Show

  • Ensure Red Hat GPG Key Installed

    To ensure the system can cryptographically verify base software packages come from Red Hat (and to connect to the Red Hat Network to receive them),...
    Rule High Severity
    Show

  • Ensure Software Patches Installed



    NOTE: U.S. Defense systems are required to be patched within 30 days or sooner as local policy dictates.
    Rule Medium Severity
    Show

  • Enable dnf-automatic Timer

    The dnf-automatic timer can be enabled with the following command: 
    $ sudo systemctl enable dnf-automatic.timer
    Rule Medium Severity
    Show

  • Account and Access Control

    In traditional Unix security, if an attacker gains shell access to a certain login account, they can perform any action or access any file to which...
    Group
    Show

  • Authselect profile

    Specify the authselect profile to select
    Value
    Show

  • Enable authselect

    Configure user authentication setup to use the <code>authselect</code> tool. If authselect profile is selected, the rule will enable the <xccdf-1.2...
    Rule Medium Severity
    Show

  • Verify Group Ownership of System Login Banner

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

  • Account Lockouts Must Be Logged

    PAM faillock locks an account due to excessive password failures, this event must be logged.
    Rule Medium Severity
    Show

  • ucredit

    Minimum number of upper case in password
    Value
    Show

  • Warning Banners for System Accesses

    Each system should expose as little information about itself as possible. <br><br> System banners, which are typically displayed just before a logi...
    Group
    Show

  • Login Banner Verbiage

    Enter an appropriate login banner for your organization. Please note that new lines must be expressed by the '\n' character and special characters ...
    Value
    Show

  • MotD Banner Verbiage

    Enter an appropriate login banner for your organization. Please note that new lines must be expressed by the '\n' character and special characters ...
    Value
    Show

  • Remote Login Banner Verbiage

    Enter an appropriate login banner for your organization. Please note that new lines must be expressed by the '\n' character and special characters ...
    Value
    Show

  • Modify the System Login Banner

    To configure the system login banner edit <code>/etc/issue</code>. Replace the default text with a message compliant with the local site policy or...
    Rule Medium Severity
    Show

  • Modify the System Login Banner for Remote Connections

    To configure the system login banner edit <code>/etc/issue.net</code>. Replace the default text with a message compliant with the local site policy...
    Rule Medium Severity
    Show

  • Modify the System Message of the Day Banner

    To configure the system message banner edit <code>/etc/motd</code>. Replace the default text with a message compliant with the local site policy or...
    Rule Medium Severity
    Show

  • Verify Group Ownership of System Login Banner for Remote Connections

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

  • Verify Group Ownership of Message of the Day Banner

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

  • Verify ownership of System Login Banner

    To properly set the owner of /etc/issue, run the command: 
    $ sudo chown root /etc/issue
    Rule Medium Severity
    Show

  • Verify ownership of System Login Banner for Remote Connections

    To properly set the owner of /etc/issue.net, run the command: 
    $ sudo chown root /etc/issue.net
    Rule Medium Severity
    Show

  • Verify ownership of Message of the Day Banner

    To properly set the owner of /etc/motd, run the command: 
    $ sudo chown root /etc/motd
    Rule Medium Severity
    Show

  • Verify permissions on System Login Banner

    To properly set the permissions of /etc/issue, run the command: 
    $ sudo chmod 0644 /etc/issue
    Rule Medium Severity
    Show

  • Verify permissions on System Login Banner for Remote Connections

    To properly set the permissions of /etc/issue.net, run the command: 
    $ sudo chmod 0644 /etc/issue.net
    Rule Medium Severity
    Show

  • Verify permissions on Message of the Day Banner

    To properly set the permissions of /etc/motd, run the command: 
    $ sudo chmod 0644 /etc/motd
    Rule Medium Severity
    Show

  • Implement a GUI Warning Banner

    In the default graphical environment, users logging directly into the system are greeted with a login screen provided by the GNOME Display Manager ...
    Group
    Show

  • Enable GNOME3 Login Warning Banner

    In the default graphical environment, displaying a login warning banner in the GNOME Display Manager's login screen can be enabled on the login scr...
    Rule Medium Severity
    Show

  • Set the GNOME3 Login Warning Banner Text

    In the default graphical environment, configuring the login warning banner text in the GNOME Display Manager's login screen can be configured on th...
    Rule Medium Severity
    Show

  • Protect Accounts by Configuring PAM

    PAM, or Pluggable Authentication Modules, is a system which implements modular authentication for Linux programs. PAM provides a flexible and confi...
    Group
    Show

  • Password Hashing algorithm

    Specify the system default encryption algorithm for encrypting passwords. Defines the value set as ENCRYPT_METHOD in /etc/login.defs.
    Value
    Show

  • remember

    The last n passwords for each user are saved in <code>/etc/security/opasswd</code> in order to force password change history and keep the user from...
    Value
    Show

  • Install pam_pwquality Package

    The libpwquality package can be installed with the following command: 
    $ sudo dnf install libpwquality
    Rule Medium Severity
    Show

  • Disallow Configuration to Bypass Password Requirements for Privilege Escalation

    Verify the operating system is not configured to bypass password requirements for privilege escalation. Check the configuration of the "/etc/pam.d/...
    Rule Medium Severity
    Show

  • Set Lockouts for Failed Password Attempts

    The <code>pam_faillock</code> PAM module provides the capability to lock out user accounts after a number of failed login attempts. Its documentati...
    Group
    Show

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