Information
AlmaLinux OS 9 must automatically lock the root account until the root account is released by an administrator when three unsuccessful logon attempts occur during a 15-minute time period.
GROUP ID: V-269148
RULE ID: SV-269148r1050030
By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.
Solution
Configure AlmaLinux OS 9 to lock the root account after a number of incorrect login attempts using pam_faillock.
First, enable the feature using the following command:
$ authselect enable-feature with-faillock
Then, add or uncomment the following line in the "/etc/security/faillock.conf" file:
even_deny_root