ANSSI-BP-028 (intermediary)
Rules and Groups employed by this XCCDF Profile
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Ensure sudo Ignores Commands In Current Dir - sudo ignore_dot
The sudo <code>ignore_dot</code> tag, when specified, will ignore the current directory in the PATH environment variable. This should be enabled by...Rule Medium Severity -
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 -
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 -
Ensure sudo umask is appropriate - sudo umask
The sudo <code>umask</code> tag, when specified, will be added the to the user's umask in the command environment. The umask should be configured b...Rule Medium Severity -
Ensure Only Users Logged In To Real tty Can Execute Sudo - sudo use_pty
The sudo <code>use_pty</code> tag, when specified, will only execute sudo commands from users logged in to a real tty. This should be enabled by ma...Rule Medium Severity -
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 -
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 -
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-automaticpackage can be installed with the following command:$ sudo zypper install dnf-automatic
Rule Medium 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 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 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-automatictimer 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 -
Protect Accounts by Configuring PAM
PAM, or Pluggable Authentication Modules, is a system which implements modular authentication for Linux programs. PAM provides a flexible and confi...Group
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