STIGQter: STIG Summary: Canonical Ubuntu 24.04 LTS Security Technical Implementation Guide Version: 1 Release: 6 Benchmark Date: 01 Jul 2026:

Ubuntu 24.04 LTS must not allow accounts configured in Pluggable Authentication Modules (PAM) with blank or null passwords.

DISA Rule

SV-270714r1208699_rule

Vulnerability Number

V-270714

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

UBTU-24-300028

Severity

CAT I

CCI(s)

CCI-000366 - Implement the security configuration settings.

Weight

Fix Recommendation

If an account is configured for password authentication but does not have an assigned password, it is possible to log on to the account without authenticating.

Remove any instances of the "nullok" option in "/etc/pam.d/common-password" and "/etc/pam.d/common-auth" to prevent logons with empty passwords.

Check Contents

To verify null passwords cannot be used, run the following command:

$ grep nullok /etc/pam.d/common-password /etc/pam.d/common-auth

If this produces any output, this is a finding.

Vulnerability Number

V-270714

Documentable

False

Rule Version

UBTU-24-300028

Severity Override Guidance

To verify null passwords cannot be used, run the following command:

$ grep nullok /etc/pam.d/common-password /etc/pam.d/common-auth

If this produces any output, this is a finding.

Check Content Reference

Target Key

5673