Guide to the Secure Configuration of SUSE Linux Enterprise 15
Rules, Groups, and Values defined within the XCCDF Benchmark
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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 shoul...Rule Medium Severity -
Ensure Users Re-Authenticate for Privilege Escalation - sudo NOPASSWD
The sudo <code>NOPASSWD</code> tag, when specified, allows a user to execute commands using sudo without having to authenticate. This should be dis...Rule Medium Severity -
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 -
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 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...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 -
Ensure gnutls-utils is installed
Thegnutls-utils
package can be installed with the following command:$ sudo zypper install gnutls-utils
Rule Medium Severity -
Ensure nss-tools is installed
Thenss-tools
package can be installed with the following command:$ sudo zypper install nss-tools
Rule Medium Severity -
Updating Software
The <code>zypper</code> command line tool is used to install and update software packages. The system also provides a graphical software update too...Group -
Install dnf-automatic Package
Thednf-automatic
package can be installed with the following command:$ sudo zypper install dnf-automatic
Rule Medium Severity -
Ensure zypper Removes Previous Package Versions
<code>zypper</code> should be configured to remove previous software components after new versions have been installed. To configure <code>zypper</...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 GPG keys are configured
The operation system or installed application can be successfully bootstrapped without the GPG key being trusted. However, you cannot install new ...Rule Medium Severity
Node 2
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