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 prevent the use of dictionary words for passwords.

DISA Rule

SV-270704r1066601_rule

Vulnerability Number

V-270704

Group Title

SRG-OS-000710-GPOS-00160

Rule Version

UBTU-24-300014

Severity

CAT II

CCI(s)

• CCI-004061 - For password-based authentication, verify when users create or update passwords, that the passwords are not found on the list of commonly-used, expected, or compromised passwords in IA-5 (1) (a).

Weight

10

Fix Recommendation

Configure Ubuntu 24.04 LTS to prevent the use of dictionary words for passwords.

Add or update the following line in the "/etc/security/pwquality.conf" file to include the "dictcheck=1" parameter:

dictcheck=1

Check Contents

Verify Ubuntu 24.04 LTS uses the "cracklib" library to prevent the use of dictionary words with the following command:

$ grep dictcheck /etc/security/pwquality.conf
dictcheck=1

If the "dictcheck" parameter is not set to "1" or is commented out, this is a finding.

Vulnerability Number

V-270704

Documentable

False

Rule Version

UBTU-24-300014

Severity Override Guidance

Verify Ubuntu 24.04 LTS uses the "cracklib" library to prevent the use of dictionary words with the following command:

$ grep dictcheck /etc/security/pwquality.conf
dictcheck=1

If the "dictcheck" parameter is not set to "1" or is commented out, this is a finding.

Check Content Reference

M

Target Key

5673