STIGQter STIGQter: STIG Summary: Red Hat Enterprise Linux 9 Security Technical Implementation Guide Version: 2 Release: 9 Benchmark Date: 01 Jul 2026:

RHEL 9 must not allow blank or null passwords.

DISA Rule

SV-258094r1045187_rule

Vulnerability Number

V-258094

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

RHEL-09-611025

Severity

CAT I

CCI(s)

Weight

10

Fix Recommendation

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 logons with empty passwords.

Note: Manual changes to the listed file may be overwritten by the "authselect" program.

Check Contents

Verify that null passwords cannot be used 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.

Vulnerability Number

V-258094

Documentable

False

Rule Version

RHEL-09-611025

Severity Override Guidance

Verify that null passwords cannot be used 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.

Check Content Reference

M

Target Key

5551