Guide to the Secure Configuration of Red Hat Enterprise Linux 8
Rules, Groups, and Values defined within the XCCDF Benchmark
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Ensure Users Re-Authenticate for Privilege Escalation - sudo
The sudo <code>NOPASSWD</code> and <code>!authenticate</code> option, when specified, allows a user to execute commands using sudo without having t...Rule Medium Severity -
Require Re-Authentication When Using the sudo Command
The sudo <code>timestamp_timeout</code> tag sets the amount of time sudo password prompt waits. The default <code>timestamp_timeout</code> value is...Rule Medium Severity -
Ensure only owner and members of group owner of /usr/bin/sudo can execute it
Remove the execute permission bit of <code>/etc/bin/sudo</code> for the other users. To properly set the permissions of <code>/usr/bin/sudo</code>...Rule Medium Severity -
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 yo...Rule Medium Severity -
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>vds...Rule Medium Severity -
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 configuratio...Rule Medium Severity -
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...Rule Medium Severity -
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 expl...Rule Medium Severity -
Ensure invoking users password for privilege escalation when using sudo
The sudoers security policy requires that users authenticate themselves before they can use sudo. When sudoers requires authentication, it validate...Rule Medium Severity -
System Tooling / Utilities
The following checks evaluate the system for recommended base packages -- both for installation and removal.Group -
Install binutils Package
Thebinutils
package can be installed with the following command:$ sudo yum install binutils
Rule Medium Severity -
Install dnf-plugin-subscription-manager Package
The <code>dnf-plugin-subscription-manager</code> package can be installed with the following command: <pre> $ sudo yum install dnf-plugin-subscript...Rule Medium Severity -
Ensure gnutls-utils is installed
Thegnutls-utils
package can be installed with the following command:$ sudo yum install gnutls-utils
Rule Medium Severity -
Install libcap-ng-utils Package
Thelibcap-ng-utils
package can be installed with the following command:$ sudo yum install libcap-ng-utils
Rule Medium Severity -
Ensure nss-tools is installed
Thenss-tools
package can be installed with the following command:$ sudo yum install nss-tools
Rule Medium Severity -
Install openscap-scanner Package
Theopenscap-scanner
package can be installed with the following command:$ sudo yum install openscap-scanner
Rule Medium Severity -
Install rear Package
Therear
package can be installed with the following command:$ sudo yum install rear
Rule Medium Severity -
Install rng-tools Package
Therng-tools
package can be installed with the following command:$ sudo yum install rng-tools
Rule Low Severity -
Install scap-security-guide Package
Thescap-security-guide
package can be installed with the following command:$ sudo yum install scap-security-guide
Rule Medium Severity -
Install subscription-manager Package
Thesubscription-manager
package can be installed with the following command:$ sudo yum install subscription-manager
Rule Medium Severity -
Install tar Package
Thetar
package can be installed with the following command:$ sudo yum install tar
Rule Medium Severity -
Install vim Package
Thevim-enhanced
package can be installed with the following command:$ sudo yum install vim-enhanced
Rule Low Severity -
Uninstall abrt-addon-ccpp Package
Theabrt-addon-ccpp
package can be removed with the following command:$ sudo yum erase abrt-addon-ccpp
Rule Low Severity -
Uninstall abrt-addon-kerneloops Package
Theabrt-addon-kerneloops
package can be removed with the following command:$ sudo yum erase abrt-addon-kerneloops
Rule Low Severity -
Uninstall abrt-cli Package
Theabrt-cli
package can be removed with the following command:$ sudo yum erase abrt-cli
Rule Low Severity -
Uninstall abrt-plugin-logger Package
Theabrt-plugin-logger
package can be removed with the following command:$ sudo yum erase abrt-plugin-logger
Rule Low Severity -
Uninstall abrt-plugin-rhtsupport Package
Theabrt-plugin-rhtsupport
package can be removed with the following command:$ sudo yum erase abrt-plugin-rhtsupport
Rule Low Severity -
Uninstall abrt-plugin-sosreport Package
Theabrt-plugin-sosreport
package can be removed with the following command:$ sudo yum erase abrt-plugin-sosreport
Rule Low Severity -
Uninstall geolite2-city Package
Thegeolite2-city
package can be removed with the following command:$ sudo yum erase geolite2-city
Rule Low Severity -
Uninstall geolite2-country Package
Thegeolite2-country
package can be removed with the following command:$ sudo yum erase geolite2-country
Rule Low Severity -
Uninstall gssproxy Package
Thegssproxy
package can be removed with the following command:$ sudo yum erase gssproxy
Rule Medium Severity -
Uninstall iprutils Package
Theiprutils
package can be removed with the following command:$ sudo yum erase iprutils
Rule Medium Severity -
Uninstall krb5-workstation Package
Thekrb5-workstation
package can be removed with the following command:$ sudo yum erase krb5-workstation
Rule Medium Severity -
Uninstall libreport-plugin-logger Package
Thelibreport-plugin-logger
package can be removed with the following command:$ sudo yum erase libreport-plugin-logger
Rule Low Severity -
Uninstall libreport-plugin-rhtsupport Package
The <code>libreport-plugin-rhtsupport</code> package can be removed with the following command: <pre> $ sudo yum erase libreport-plugin-rhtsupport<...Rule Low Severity -
Uninstall pigz Package
Thepigz
package can be removed with the following command:$ sudo yum erase pigz
Rule Low Severity -
Uninstall python3-abrt-addon Package
Thepython3-abrt-addon
package can be removed with the following command:$ sudo yum erase python3-abrt-addon
Rule Low Severity -
Uninstall tuned Package
Thetuned
package can be removed with the following command:$ sudo yum erase tuned
Rule Medium Severity -
Updating Software
The <code>yum</code> command line tool is used to install and update software packages. The system also provides a graphical software update tool i...Group -
Install dnf-automatic Package
Thednf-automatic
package can be installed with the following command:$ sudo yum install dnf-automatic
Rule Medium Severity -
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> ...Rule Low Severity -
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 -
Configure dnf-automatic to Install Only Security Updates
To configure <code>dnf-automatic</code> to install only security updates automatically, set <code>upgrade_type</code> to <code>security</code> unde...Rule Low Severity -
Ensure gpgcheck Enabled In Main yum Configuration
The <code>gpgcheck</code> option controls whether RPM packages' signatures are always checked prior to installation. To configure yum to check pack...Rule High Severity -
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 s...Rule High Severity -
Ensure gpgcheck Enabled for All yum 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 -
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 w...Rule High Severity -
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 -
Ensure Software Patches Installed
If the system is joined to the Red Hat Network, a Red Hat Satellite Server, or a yum server, run the following command to install updates: <pre>$ ...Rule Medium Severity -
Enable dnf-automatic Timer
Thednf-automatic
timer can be enabled with the following command:$ sudo systemctl enable dnf-automatic.timer
Rule Medium Severity
Node 2
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