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Guide to the Secure Configuration of Oracle Linux 10

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Trigger a kernel BUG when data corruption is detected

    This option makes the kernel BUG when it encounters data corruption in kernel memory structures when they get checked for validity. This configurat...
    Rule Low Severity
    Show

  • Prevent applications from mapping low portion of virtual memory

    To set the runtime status of the <code>vm.mmap_min_addr</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w vm.mmap_min_addr=...
    Rule Medium Severity
    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

  • 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
    Show

  • 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
    Show

  • fail_unlock_time

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

  • tally2_unlock_time

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

  • tally2

    Number of failed login attempts
    Value
    Show

  • Ensure /var/tmp Located On Separate Partition

    The <code>/var/tmp</code> directory is a world-writable directory used for temporary file storage. Ensure it has its own partition or logical volum...
    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

  • retry

    Number of retry attempts before erroring out
    Value
    Show

  • ucredit

    Minimum number of upper case in password
    Value
    Show

  • Verify Permissions on group File

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

  • Verify Permissions on gshadow File

    To properly set the permissions of /etc/gshadow, run the command: 
    $ sudo chmod 0000 /etc/gshadow
    Rule Medium Severity
    Show

  • Verify Permissions on passwd File

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

  • 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>...
    Rule Medium Severity
    Show

  • 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...
    Rule Medium Severity
    Show

  • System Settings

    Contains rules that check correct system settings.
    Group
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  • Installing and Maintaining Software

    The following sections contain information on security-relevant choices during the initial operating system installation process and the setup of s...
    Group
    Show

  • Prefer to use a 64-bit Operating System when supported

    Prefer installation of 64-bit operating systems when the CPU supports it.
    Rule Medium Severity
    Show

  • Ensure All User Initialization Files Have Mode 0740 Or Less Permissive

    Set the mode of the user initialization files to <code>0740</code> with the following command: <pre>$ sudo chmod 0740 /home/<i>USER</i>/.<i>INIT_FI...
    Rule Medium Severity
    Show

  • Ensure AppArmor is enabled in the bootloader configuration

    Configure AppArmor to be enabled at boot time and verify that it has not been overwritten by the bootloader boot parameters. Note: This recommenda...
    Rule Medium Severity
    Show

  • Verify Permissions on shadow File

    To properly set the permissions of /etc/shadow, run the command: 
    $ sudo chmod 0000 /etc/shadow
    Rule Medium Severity
    Show

  • Verify Permissions on /etc/shells File

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

  • Verify File Permissions Within Some Important Directories

    Some directories contain files whose confidentiality or integrity is notably important and may also be susceptible to misconfiguration over time, p...
    Group
    Show

  • Verify Group Who Owns /etc/sysctl.d Directory

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

  • Verify User Who Owns /etc/sysctl.d Directory

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

  • Verify Permissions On /etc/sysctl.d Directory

    To properly set the permissions of /etc/sysctl.d, run the command: 
    $ sudo chmod 0755 /etc/sysctl.d
    Rule Medium Severity
    Show

  • System and Software Integrity

    System and software integrity can be gained by installing antivirus, increasing system encryption strength with FIPS, verifying installed software,...
    Group
    Show

  • Software Integrity Checking

    Both the AIDE (Advanced Intrusion Detection Environment) software and the RPM package management system provide mechanisms for verifying the integr...
    Group
    Show

  • Integrity Scan Notification Email Address

    Specify the email address for designated personnel if baseline configurations are changed in an unauthorized manner.
    Value
    Show

  • Verify Integrity with AIDE

    AIDE conducts integrity checks by comparing information about files with previously-gathered information. Ideally, the AIDE database is created imm...
    Group
    Show

  • Install AIDE

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

  • Ensure /home Located On Separate Partition

    If user home directories will be stored locally, create a separate partition for <code>/home</code> at installation time (or migrate it later using...
    Rule Low Severity
    Show

  • 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
    Show

  • Sudo

    <code>Sudo</code>, which stands for "su 'do'", provides the ability to delegate authority to certain users, groups of users, or system administrato...
    Group
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  • Group name dedicated to the use of sudo

    Specify the name of the group that should own /usr/bin/sudo.
    Value
    Show

  • Sudo - umask value

    Specify the sudo umask to use. The actual umask value that is used is the union of the user's umask and the sudo umask. The default sudo umask is 0...
    Value
    Show

  • Install sudo Package

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

  • 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
    Show

  • 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
    Show

  • 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
    Show

  • 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
    Show

  • 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
    Show

  • 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
    Show

  • 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
    Show

  • Ensure Privileged Escalated Commands Cannot Execute Other Commands - sudo NOEXEC

    The sudo <code>NOEXEC</code> tag, when specified, prevents user executed commands from executing other commands, like a shell for example. This sho...
    Rule High Severity
    Show

  • Ensure Only Users Logged In To Real tty Can Execute Sudo - sudo requiretty

    The sudo <code>requiretty</code> tag, when specified, will only execute sudo commands from users logged in to a real tty. This should be enabled by...
    Rule Medium Severity
    Show

Node 2

siemur/test-space

The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.

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