DISA STIG for SUSE Linux Enterprise 15
Rules and Groups employed by this XCCDF Profile
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Set Password Quality Requirements
The default <code>pam_pwquality</code> PAM module provides strength checking for passwords. It performs a number of checks, such as making sure passwords are not similar to dictionary words, are of...Group -
Set Password Quality Requirements, if using pam_cracklib
The <code>pam_cracklib</code> PAM module can be configured to meet requirements for a variety of policies. <br> <br> For example, to configure <code>pam_cracklib</code> to require at least...Group -
Set Password Strength Minimum Digit Characters
The pam_cracklib module's <code>dcredit</code> parameter controls requirements for usage of digits in a password. When set to a negative number, any password will be required to contain that many d...Rule Medium Severity -
Set Password Strength Minimum Different Characters
The pam_cracklib module's <code>difok</code> parameter controls requirements for usage of different characters during a password change. The number of changed characters refers to the number of cha...Rule Medium Severity -
Set Password Strength Minimum Lowercase Characters
The pam_cracklib module's <code>lcredit=</code> parameter controls requirements for usage of lowercase letters in a password. When set to a negative number, any password will be required to contain...Rule Medium Severity -
Set Password Minimum Length
The pam_cracklib module's <code>minlen</code> parameter controls requirements for minimum characters required in a password. Add <code>minlen=<xccdf-1.2:sub idref="xccdf_org.ssgproject.content_valu...Rule Medium Severity -
Set Password Strength Minimum Special Characters
The pam_cracklib module's <code>ocredit=</code> parameter controls requirements for usage of special (or ``other'') characters in a password. When set to a negative number, any password will be req...Rule Medium Severity -
Set Password Retry Limit
The pam_cracklib module's <code>retry</code> parameter controls the maximum number of times to prompt the user for the password before returning with error. Make sure it is configured with a value ...Rule Medium Severity -
Set Password Strength Minimum Uppercase Characters
The pam_cracklib module's <code>ucredit=</code> parameter controls requirements for usage of uppercase letters in a password. When set to a negative number, any password will be required to contain...Rule Medium Severity -
Set Password Hashing Algorithm
The system's default algorithm for storing password hashes in/etc/shadowis SHA-512. This can be configured in several locations.Group -
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_value_var_password_hashing_algorithm" use="legacy"...Rule Medium Severity -
Set PAM''s Password Hashing Algorithm
The PAM system service can be configured to only store encrypted representations of passwords. In "/etc/pam.d/common-password", the <code>password</code> section of the file controls which PAM modu...Rule Medium Severity -
Set Password Hashing Rounds in /etc/login.defs
In <code>/etc/login.defs</code>, ensure <code>SHA_CRYPT_MIN_ROUNDS</code> and <code>SHA_CRYPT_MAX_ROUNDS</code> has the minimum value of <code>5000</code>. For example: <pre>SHA_CRYPT_MIN_ROUNDS 50...Rule Medium Severity -
Protect Physical Console Access
It is impossible to fully protect a system from an attacker with physical access, so securing the space in which the system is located should be considered a necessary step. However, there are some...Group -
Disable Ctrl-Alt-Del Burst Action
By default, <code>SystemD</code> will reboot the system if the <code>Ctrl-Alt-Del</code> key sequence is pressed Ctrl-Alt-Delete more than 7 times in 2 seconds. <br> <br> To configure the s...Rule High Severity -
Disable Ctrl-Alt-Del Reboot Activation
By default, <code>SystemD</code> will reboot the system if the <code>Ctrl-Alt-Del</code> key sequence is pressed. <br> <br> To configure the system to ignore the <code>Ctrl-Alt-Del</code> k...Rule High Severity -
Configure Screen Locking
When a user must temporarily leave an account logged-in, screen locking should be employed to prevent passersby from abusing the account. User education and training is particularly important for s...Group -
Configure Console Screen Locking
A console screen locking mechanism is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not logout because of th...Group -
Check that vlock is installed to allow session locking
The SUSE Linux Enterprise 15 operating system must have vlock installed to allow for session locking. The <code>kbd</code> package can be installed with the following command: <pre> $ sudo zypper...Rule Medium Severity -
Hardware Tokens for Authentication
The use of hardware tokens such as smart cards for system login provides stronger, two-factor authentication than using a username and password. In Red Hat Enterprise Linux servers and workstation...Group
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