Guide to the Secure Configuration of SUSE Linux Enterprise 15
Rules, Groups, and Values defined within the XCCDF Benchmark
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Ensure gpgcheck Enabled In Main zypper Configuration
The <code>gpgcheck</code> option controls whether RPM packages' signatures are always checked prior to installation. To configure zypper to check p...Rule High Severity -
Ensure gpgcheck Enabled for Local Packages
<code>zypper</code> should be configured to verify the signature(s) of local packages prior to installation. To configure <code>zypper</code> to ve...Rule High Severity -
Ensure gpgcheck Enabled for All zypper 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 package manager repositories are configured
Systems need to have package manager repositories configured to ensure they receive the latest patches and updates.Rule Medium Severity -
Ensure SUSE GPG Key Installed
To ensure the system can cryptographically verify base software packages come from SUSE (and to connect to the SUSE to receive them), the SUSE GPG ...Rule High Severity -
Ensure Software Patches Installed
If the system is configured for online updates, invoking the following command will list available security updates: <pre>$ sudo zypper refresh &a...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 -
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 -
Authselect profile
Specify the authselect profile to selectValue -
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 -
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 -
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 -
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 -
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 -
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 -
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 -
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 -
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 -
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 -
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
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