DRAFT - ANSSI-BP-028 (enhanced)
Rules and Groups employed by this XCCDF Profile
-
Install sudo Package
Thesudo
package can be installed with the following command:$ sudo dnf install sudo
Rule Medium Severity -
Verify Group Who Owns /etc/sudoers.d Directory
To properly set the group owner of/etc/sudoers.d
, run the command:$ sudo chgrp root /etc/sudoers.d
Rule Medium Severity -
Verify User Who Owns /etc/sudoers.d Directory
To properly set the owner of/etc/sudoers.d
, run the command:$ sudo chown root /etc/sudoers.d
Rule Medium Severity -
Verify Permissions On /etc/sudoers.d Directory
To properly set the permissions of/etc/sudoers.d
, run the command:$ sudo chmod 0750 /etc/sudoers.d
Rule Medium Severity -
Verify Group Who Owns /etc/sudoers File
To properly set the group owner of/etc/sudoers
, run the command:$ sudo chgrp root /etc/sudoers
Rule Medium Severity -
Verify User Who Owns /etc/sudoers File
To properly set the owner of/etc/sudoers
, run the command:$ sudo chown root /etc/sudoers
Rule Medium Severity -
Verify Permissions On /etc/sudoers File
To properly set the permissions of/etc/sudoers
, run the command:$ sudo chmod 0440 /etc/sudoers
Rule Medium Severity -
Ensure That the sudo Binary Has the Correct Permissions
To properly set the permissions of/usr/bin/sudo
, run the command:$ sudo chmod 4111 /usr/bin/sudo
Rule Medium Severity -
Ensure sudo Runs In A Minimal Environment - sudo env_reset
The sudo <code>env_reset</code> tag, when specified, will run the command in a minimal environment, containing the TERM, PATH, HOME, MAIL, SHELL, L...Rule Medium Severity -
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. On Red Hat Enterprise Lin...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 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 a dedicated group owns sudo
Restrict the execution of privilege escalated commands to a dedicated group of users. Ensure the group owner of /usr/bin/sudo is <xccdf-1.2:sub xml...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 -
Updating Software
The <code>dnf</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 dnf 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
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