ANSSI-BP-028 (enhanced)
Rules and Groups employed by this XCCDF Profile
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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. 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 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 -
Ensure Software Patches Installed
If the system has an apt repository available, run the following command to install updates: <pre>$ apt update && apt full-upgrade</pre> ...Rule Medium Severity -
Install pam_pwquality Package
Thelibpam-pwqualitypackage can be installed with the following command:$ apt-get install libpam-pwquality
Rule Medium Severity -
Limit Password Reuse
Do not allow users to reuse recent passwords. This can be accomplished by using the <code>remember</code> option for the <code>pam_unix</code> or <...Rule Medium Severity -
Lock Accounts After Failed Password Attempts
This rule configures the system to lock out accounts after a number of incorrect login attempts using <code>pam_faillock.so</code>. pam_faillock.so...Rule Medium Severity -
Set Interval For Counting Failed Password Attempts
Utilizing <code>pam_faillock.so</code>, the <code>fail_interval</code> directive configures the system to lock out an account after a number of inc...Rule Medium Severity -
Set Lockout Time for Failed Password Attempts
This rule configures the system to lock out accounts during a specified time period after a number of incorrect login attempts using <code>pam_fail...Rule Medium Severity -
Ensure PAM Enforces Password Requirements - Minimum Digit Characters
The pam_pwquality module's <code>dcredit</code> parameter controls requirements for usage of digits in a password. When set to a negative number, a...Rule Medium Severity -
Ensure PAM Enforces Password Requirements - Minimum Lowercase Characters
The pam_pwquality module's <code>lcredit</code> parameter controls requirements for usage of lowercase letters in a password. When set to a negativ...Rule Medium Severity -
Ensure PAM Enforces Password Requirements - Minimum Different Categories
The pam_pwquality module's <code>minclass</code> parameter controls requirements for usage of different character classes, or types, of character t...Rule Medium Severity -
Ensure PAM Enforces Password Requirements - Minimum Length
The pam_pwquality module's <code>minlen</code> parameter controls requirements for minimum characters required in a password. Add <code>minlen=<xcc...Rule Medium Severity -
Ensure PAM Enforces Password Requirements - Minimum Special Characters
The pam_pwquality module's <code>ocredit=</code> parameter controls requirements for usage of special (or "other") characters in a password. When s...Rule Medium Severity -
Ensure PAM Enforces Password Requirements - Authentication Retry Prompts Permitted Per-Session
To configure the number of retry prompts that are permitted per-session: Edit the <code>pam_pwquality.so</code> statement in <code>/etc/pam.d/com...Rule Medium Severity -
Ensure PAM Enforces Password Requirements - Minimum Uppercase Characters
The pam_pwquality module's <code>ucredit=</code> parameter controls requirements for usage of uppercase letters in a password. When set to a negati...Rule Medium Severity -
Set Password Hashing Algorithm in /etc/login.defs
In <code>/etc/login.defs</code>, add or update the following line to ensure the system will use <xccdf-1.2:sub idref="xccdf_org.ssgproject.content_...Rule Medium Severity -
Configure Logind to terminate idle sessions after certain time of inactivity
To configure <code>logind</code> service to terminate inactive user sessions after <xccdf-1.2:sub idref="xccdf_org.ssgproject.content_value_var_log...Rule Medium Severity -
Set Root Account Password Maximum Age
Configure the root account to enforce a <xccdf-1.2:sub idref="xccdf_org.ssgproject.content_value_var_accounts_maximum_age_root" use="legacy"></xccd...Rule Medium Severity -
Set number of Password Hashing Rounds - password-auth
Configure the number or rounds for the password hashing algorithm. This can be accomplished by using the <code>rounds</code> option for the <code>p...Rule Medium Severity -
Set Interactive Session Timeout
Setting the <code>TMOUT</code> option in <code>/etc/profile</code> ensures that all user sessions will terminate based on inactivity. The value of ...Rule Medium Severity -
User Initialization Files Must Be Group-Owned By The Primary Group
Change the group owner of interactive users files to the group found in <pre>/etc/passwd</pre> for the user. To change the group owner of a local i...Rule Medium Severity -
User Initialization Files Must Be Owned By the Primary User
Set the owner of the user initialization files for interactive users to the primary owner with the following command: <pre>$ sudo chown <i>USER</i>...Rule Medium Severity -
All User Files and Directories In The Home Directory Must Be Group-Owned By The Primary Group
Change the group of a local interactive users files and directories to a group that the interactive user is a member of. To change the group owner ...Rule Medium Severity -
All User Files and Directories In The Home Directory Must Have a Valid Owner
Either remove all files and directories from the system that do not have a valid user, or assign a valid user to all unowned files and directories....Rule Medium Severity -
All User Files and Directories In The Home Directory Must Have Mode 0750 Or Less Permissive
Set the mode on files and directories in the local interactive user home directory with the following command: <pre>$ sudo chmod 0750 /home/<i>USER...Rule Medium Severity -
Ensure All User Initialization Files Have Mode 0740 Or Less Permissive
Set the mode of the user initialization files to <code>0740</code> with the following command: <pre>$ sudo chmod 0740 /home/<i>USER</i>/.<i>INIT_FI...Rule Medium Severity -
Ensure the Default Bash Umask is Set Correctly
To ensure the default umask for users of the Bash shell is set properly, add or correct the <code>umask</code> setting in <code>/etc/bashrc</code> ...Rule Medium Severity -
Configure Microarchitectural Data Sampling mitigation
Microarchitectural Data Sampling (MDS) is a hardware vulnerability which allows unprivileged speculative access to data which is available in vario...Rule Medium Severity -
Enable randomization of the page allocator
To enable randomization of the page allocator in the kernel, add the <code>page_alloc.shuffle=1</code> argument to the default GRUB 2 command line....Rule Medium Severity -
Enable Kernel Page-Table Isolation (KPTI)
To enable Kernel page-table isolation, add the argument <code>pti=on</code> to the default GRUB 2 command line for the Linux operating system. Conf...Rule Low Severity -
Verify /boot/grub/grub.cfg Group Ownership
The file <code>/boot/grub/grub.cfg</code> should be group-owned by the <code>root</code> group to prevent destruction or modification of the file. ...Rule Medium Severity -
Verify /boot/grub/user.cfg Group Ownership
The file <code>/boot/grub/user.cfg</code> should be group-owned by the <code>root</code> group to prevent reading or modification of the file. To ...Rule Medium Severity -
Verify /boot/grub/grub.cfg User Ownership
The file <code>/boot/grub/grub.cfg</code> should be owned by the <code>root</code> user to prevent destruction or modification of the file. To pro...Rule Medium Severity -
Verify /boot/grub/user.cfg User Ownership
The file <code>/boot/grub/user.cfg</code> should be owned by the <code>root</code> user to prevent reading or modification of the file. To properl...Rule Medium Severity -
Verify /boot/grub/grub.cfg Permissions
File permissions for <code>/boot/grub/grub.cfg</code> should be set to 600. To properly set the permissions of <code>/boot/grub/grub.cfg</code>, r...Rule Medium Severity -
Verify /boot/grub/user.cfg Permissions
File permissions for <code>/boot/grub/user.cfg</code> should be set to 600. To properly set the permissions of <code>/boot/grub/user.cfg</code>, r...Rule Medium Severity -
Set Boot Loader Password in grub2
The grub2 boot loader should have a superuser account and password protection enabled to protect boot-time settings. <br> <br> Since plaint...Rule High Severity -
Verify the UEFI Boot Loader grub.cfg Group Ownership
The file <code>/boot/grub2/grub.cfg</code> should be group-owned by the <code>root</code> group to prevent destruction or modification of the file....Rule Medium Severity -
Verify /boot/grub2/user.cfg Group Ownership
The file <code>/boot/grub2/user.cfg</code> should be group-owned by the <code>root</code> group to prevent reading or modification of the file. To...Rule Medium Severity -
Verify the UEFI Boot Loader grub.cfg User Ownership
The file <code>/boot/grub2/grub.cfg</code> should be owned by the <code>root</code> user to prevent destruction or modification of the file. To pr...Rule Medium Severity -
Verify /boot/grub2/user.cfg User Ownership
The file <code>/boot/grub2/user.cfg</code> should be owned by the <code>root</code> user to prevent reading or modification of the file. To proper...Rule Medium Severity -
Verify the UEFI Boot Loader grub.cfg Permissions
File permissions for <code>/boot/grub2/grub.cfg</code> should be set to 700. To properly set the permissions of <code>/boot/grub2/grub.cfg</code>,...Rule Medium Severity
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