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 enforce password complexity by requiring that at least one lowercase character be used.

DISA Rule

SV-270727r1066670_rule

Vulnerability Number

V-270727

Group Title

SRG-OS-000070-GPOS-00038

Rule Version

UBTU-24-400270

Severity

CAT II

CCI(s)

• CCI-004065 - For password-based authentication, employ automated tools to assist the user in selecting strong password authenticators.
• CCI-004066 - For password-based authentication, enforce organization-defined composition and complexity rules.

Weight

10

Fix Recommendation

Configure Ubuntu 24.04 LTS to enforce password complexity by requiring that at least one lowercase character be used.

Add or update the "/etc/security/pwquality.conf" file to contain the "lcredit" parameter:

lcredit=-1

Check Contents

Verify Ubuntu 24.04 LTS enforces password complexity by requiring that at least one lowercase character be used with the following command:

$ grep -i "lcredit" /etc/security/pwquality.conf
lcredit=-1

If the "lcredit" parameter is greater than "-1", is commented out, or is missing, this is a finding.

Vulnerability Number

V-270727

Documentable

False

Rule Version

UBTU-24-400270

Severity Override Guidance

Verify Ubuntu 24.04 LTS enforces password complexity by requiring that at least one lowercase character be used with the following command:

$ grep -i "lcredit" /etc/security/pwquality.conf
lcredit=-1

If the "lcredit" parameter is greater than "-1", is commented out, or is missing, this is a finding.

Check Content Reference

M

Target Key

5673