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Assessment Title
Rule Text
RHEL 8 must configure the use of the pam_faillock.so module in the /etc/pam.d/system-auth file.
Description
Discussion Text
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.
In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module. Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.
From "faillock.conf" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.
The preauth argument must be used when the module is called before the modules which ask for the user credentials such as the password.
Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128
In RHEL 8.2 the "/etc/security/faillock.conf" file was incorporated to centralize the configuration of the pam_faillock.so module. Also introduced is a "local_users_only" option that will only track failed user authentication attempts for local users in /etc/passwd and ignore centralized (AD, IdM, LDAP, etc.) users to allow the centralized platform to solely manage user lockout.
From "faillock.conf" man pages: Note that the default directory that "pam_faillock" uses is usually cleared on system boot so the access will be reenabled after system reboot. If that is undesirable a different tally directory must be set with the "dir" option.
The preauth argument must be used when the module is called before the modules which ask for the user credentials such as the password.
Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128
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