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Guide to the Secure Configuration of Oracle Linux 7

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Ensure Users Re-Authenticate for Privilege Escalation - sudo !authenticate

    The sudo <code>!authenticate</code> option, when specified, allows a user to execute commands using sudo without having to authenticate. This should be disabled by making sure that the <code>!authe...
    Rule Medium Severity
    Show

  • The operating system must restrict privilege elevation to authorized personnel

    The sudo command allows a user to execute programs with elevated (administrator) privileges. It prompts the user for their password and confirms your request to execute a command by checking a file...
    Rule Medium Severity
    Show

  • Only the VDSM User Can Use sudo NOPASSWD

    The sudo <code>NOPASSWD</code> tag, when specified, allows a user to execute commands using sudo without having to authenticate. Only the <code>vdsm</code> user should have this capability in any s...
    Rule Medium Severity
    Show

  • Ensure sudo only includes the default configuration directory

    Administrators can configure authorized <code>sudo</code> users via drop-in files, and it is possible to include other directories and configuration files from the file currently being parsed. Mak...
    Rule Medium Severity
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  • Explicit arguments in sudo specifications

    All commands in the sudoers file must strictly specify the arguments allowed to be used for a given user. If the command is supposed to be executed only without arguments, pass "" as an argument in...
    Rule Medium Severity
    Show

  • Don't define allowed commands in sudoers by means of exclusion

    Policies applied by sudo through the sudoers file should not involve negation. Each user specification in the <code>sudoers</code> file contains a comma-delimited list of command specifications. T...
    Rule Medium Severity
    Show

  • Don't target root user in the sudoers file

    The targeted users of a user specification should be, as much as possible, non privileged users (i.e.: non-root). User specifications have to explicitly list the runas spec (i.e. the list of targe...
    Rule Medium Severity
    Show

  • System Tooling / Utilities

    The following checks evaluate the system for recommended base packages -- both for installation and removal.
    Group
    Show

  • Install binutils Package

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

  • Ensure gnutls-utils is installed

    The gnutls-utils package can be installed with the following command: 
    $ sudo yum install gnutls-utils
    Rule Medium Severity
    Show

  • Install libcap-ng-utils Package

    The libcap-ng-utils package can be installed with the following command: 
    $ sudo yum install libcap-ng-utils
    Rule Medium Severity
    Show

  • Ensure nss-tools is installed

    The nss-tools package can be installed with the following command: 
    $ sudo yum install nss-tools
    Rule Medium Severity
    Show

  • Install openscap-scanner Package

    The openscap-scanner package can be installed with the following command: 
    $ sudo yum install openscap-scanner
    Rule Medium Severity
    Show

  • Install rear Package

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

  • Install rng-tools Package

    The rng-tools package can be installed with the following command: 
    $ sudo yum install rng-tools
    Rule Low Severity
    Show

  • Install scap-security-guide Package

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

  • Install vim Package

    The vim-enhanced package can be installed with the following command: 
    $ sudo yum install vim-enhanced
    Rule Low Severity
    Show

  • Uninstall abrt-addon-ccpp Package

    The abrt-addon-ccpp package can be removed with the following command: 
    $ sudo yum erase abrt-addon-ccpp
    Rule Low Severity
    Show

  • Uninstall abrt-addon-kerneloops Package

    The abrt-addon-kerneloops package can be removed with the following command: 
    $ sudo yum erase abrt-addon-kerneloops
    Rule Low Severity
    Show

  • Uninstall abrt-addon-python Package

    The abrt-addon-python package can be removed with the following command: 
    $ sudo yum erase abrt-addon-python
    Rule Low Severity
    Show

  • Uninstall abrt-cli Package

    The abrt-cli package can be removed with the following command: 
    $ sudo yum erase abrt-cli
    Rule Low Severity
    Show

  • Uninstall abrt-plugin-logger Package

    The abrt-plugin-logger package can be removed with the following command: 
    $ sudo yum erase abrt-plugin-logger
    Rule Low Severity
    Show

  • Uninstall abrt-plugin-rhtsupport Package

    The abrt-plugin-rhtsupport package can be removed with the following command: 
    $ sudo yum erase abrt-plugin-rhtsupport
    Rule Low Severity
    Show

  • Uninstall abrt-plugin-sosreport Package

    The abrt-plugin-sosreport package can be removed with the following command: 
    $ sudo yum erase abrt-plugin-sosreport
    Rule Low Severity
    Show

  • Uninstall geolite2-city Package

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

  • Uninstall geolite2-country Package

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

  • Uninstall gssproxy Package

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

  • Uninstall iprutils Package

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

  • Uninstall libreport-plugin-logger Package

    The libreport-plugin-logger package can be removed with the following command: 
    $ sudo yum erase libreport-plugin-logger
    Rule Low Severity
    Show

  • Uninstall libreport-plugin-rhtsupport Package

    The libreport-plugin-rhtsupport package can be removed with the following command: 
    $ sudo yum erase libreport-plugin-rhtsupport
    Rule Low Severity
    Show

  • Uninstall tuned Package

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

  • Ensure yum Removes Previous Package Versions

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

  • Ensure gpgcheck Enabled for Local Packages

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

  • Ensure gpgcheck Enabled for All yum Package Repositories

    To ensure signature checking is not disabled for any repos, remove any lines from files in /etc/yum.repos.d of the form: 
    gpgcheck=0
    Rule High Severity
    Show

  • Ensure gpgcheck Enabled for Repository Metadata

    Verify the operating system prevents the installation of patches, service packs, device drivers, or operating system components of local packages without verification of the repository metadata. Ch...
    Rule High Severity
    Show

  • Ensure Oracle Linux GPG Key Installed

    To ensure the system can cryptographically verify base software packages come from Oracle (and to connect to the Unbreakable Linux Network to receive them), the Oracle GPG key must properly be inst...
    Rule High 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

  • 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 that account has access. Therefore, making it mor...
    Group
    Show

  • Ensure system-auth and password-auth files are symbolic links pointing to system-auth-local and password-auth-local

    Oracle Linux 7 must be configured to prevent overwriting of custom authentication configuration settings by the authconfig utility. This can be avoided by creating new local configuration files and...
    Rule Medium Severity
    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 login prompt, give out information about the s...
    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 like parentheses and quotation marks must be escap...
    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 like parentheses and quotation marks must be escap...
    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 like parentheses and quotation marks must be escap...
    Value
    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

  • 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 a legal disclaimer. The DoD required text is eit...
    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

Node 2

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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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