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RHEL-10-600455 RHEL 10 must not allow blank or null passwords.

DISA STIG library V1R3
All changes in this version
first version loaded CAT II

Maps to IA-5(1) via CCI-004066

Title

RHEL 10 must not allow blank or null passwords.

Control

Verify RHEL 10 prohibits the use of null passwords with the following command: $ sudo grep -i nullok /etc/pam.d/system-auth /etc/pam.d/password-auth If output is produced, this is a finding. If the system administrator (SA) can demonstrate that the required configuration is contained in a PAM configuration file included or substacked from the "system-auth" file, this is not a finding.

Discussion

If an account has an empty password, anyone could log in and run commands with the privileges of that account. Accounts with empty passwords must never be used in operational environments.

Related controls

CCI-004066

Fix

Configure RHEL 10 to prohibit the use of null passwords. If PAM is managed with "authselect", use the following command to remove instances of "nullok": $ sudo authselect enable-feature without-nullok Otherwise, remove any instances of the "nullok" option in the "/etc/pam.d/password-auth" and "/etc/pam.d/system-auth" files to prevent logins with empty passwords. Note: Manual changes to the listed file may be overwritten by the "authselect" program.