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Guide to the Secure Configuration of Red Hat Enterprise Linux 10

Rules, Groups, and Values defined within the XCCDF Benchmark

  • 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
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  • Warning Banners for System Accesses

    Each system should expose as little information about itself as possible. <br> <br> System banners, which are typically displayed jus...
    Group
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  • CIS Login Banner Verbiage

    Enter an appropriate login banner for your organization according to the local policy.
    Value
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  • 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
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  • Ensure Local Login Warning Banner Is Configured Properly

    To configure the system local login warning banner edit the <code>/etc/issue</code> file. The contents of this file is displayed to users prior to ...
    Rule Medium Severity
    Show

  • Ensure Remote Login Warning Banner Is Configured Properly

    To configure the system remote login warning banner edit the <code>/etc/issue.net</code> file. The contents of this file is displayed to users prio...
    Rule Medium Severity
    Show

  • Ensure Message Of The Day Is Configured Properly

    To configure the system message of the day banner edit the <code>/etc/motd</code> file. Replace the default text with a message compliant with the ...
    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

  • 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

  • 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
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  • Password Hashing algorithm

    Specify the system default encryption algorithm for encrypting passwords. Defines the value set as ENCRYPT_METHOD in /etc/login.defs.
    Value
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  • Password Hashing algorithm for pam_unix.so

    Specify the system default encryption algorithm for encrypting passwords. Defines the hashing algorithm to be used in pam_unix.so.
    Value
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  • 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
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  • 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

  • Limit Password Reuse: system-auth

    Do not allow users to reuse recent passwords. This can be accomplished by using the <code>remember</code> option for the <code>pam_pwhistory</code>...
    Rule Medium Severity
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  • Ensure PAM Displays Last Logon/Access Notification

    To configure the system to notify users of last logon/access using <code>pam_lastlog</code>, add or correct the <code>pam_lastlog</code> settings i...
    Rule Low Severity
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  • Set Up a Private Namespace in PAM Configuration

    To setup a private namespace add the following line to <code>/etc/pam.d/login</code>: <pre>session required pam_namespace.so</pre> ...
    Rule Low Severity
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  • 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
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  • fail_deny

    Number of failed login attempts before account lockout
    Value
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  • faillock directory

    The directory where the user files with the failure records are kept
    Value
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  • fail_interval

    Interval for counting failed login attempts before account lockout
    Value
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  • fail_unlock_time

    Seconds before automatic unlocking or permanently locking after excessive failed logins
    Value
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  • tally2_unlock_time

    Seconds before automatic unlocking or permanently locking after excessive failed logins
    Value
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  • pwhistory_remember

    Prevent password re-use using password history lookup
    Value
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  • PAM pwhistory remember - control flag

    'Specify the control flag required for password remember requirement. If multiple values are allowed write them separated by commas as in "required...
    Value
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  • tally2

    Number of failed login attempts
    Value
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  • Configure the Use of the pam_faillock.so Module in the /etc/pam.d/password-auth File.

    The pam_faillock.so module must be loaded in preauth in /etc/pam.d/password-auth.
    Rule Medium Severity
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  • Configure the Use of the pam_faillock.so Module in the /etc/pam.d/system-auth File.

    The pam_faillock.so module must be loaded in preauth in /etc/pam.d/system-auth.
    Rule Medium Severity
    Show

  • 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
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  • Limit Password Reuse: password-auth

    Do not allow users to reuse recent passwords. This can be accomplished by using the <code>remember</code> option for the <code>pam_pwhistory</code>...
    Rule Medium Severity
    Show

  • Limit Password Reuse

    Do not allow users to reuse recent passwords. This can be accomplished by using the <code>remember</code> option for the <code>pam_unix</code> or <...
    Rule Medium Severity
    Show

  • Lock Accounts After Failed Password Attempts

    This rule configures the system to lock out accounts after a number of incorrect login attempts using <code>pam_faillock.so</code>. pam_faillock.so...
    Rule Medium Severity
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  • Configure the root Account for Failed Password Attempts

    This rule configures the system to lock out the <code>root</code> account after a number of incorrect login attempts using <code>pam_faillock.so</c...
    Rule Medium Severity
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  • Lock Accounts Must Persist

    This rule ensures that the system lock out accounts using <code>pam_faillock.so</code> persist after system reboot. From "pam_faillock" man pages: ...
    Rule Medium Severity
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  • Set Interval For Counting Failed Password Attempts

    Utilizing <code>pam_faillock.so</code>, the <code>fail_interval</code> directive configures the system to lock out an account after a number of inc...
    Rule Medium Severity
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  • Set Lockout Time for Failed Password Attempts

    This rule configures the system to lock out accounts during a specified time period after a number of incorrect login attempts using <code>pam_fail...
    Rule Medium Severity
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  • Set Password Quality Requirements

    The default <code>pam_pwquality</code> PAM module provides strength checking for passwords. It performs a number of checks, such as making sure pas...
    Group
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  • Ensure PAM Enforces Password Requirements - Enforce for root User

    The pam_pwquality module's <code>enforce_for_root</code> parameter controls requirements for enforcing password complexity for the root user. Enabl...
    Rule Medium Severity
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  • Set Password Quality Requirements with pam_pwquality

    The <code>pam_pwquality</code> PAM module can be configured to meet requirements for a variety of policies. <br> <br> For example...
    Group
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