STIGQter: STIG Summary: Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 10 Mar 2021:

The Ubuntu operating system must enforce password complexity by requiring that at least one lower-case character be used.

DISA Rule

SV-238222r653841_rule

Vulnerability Number

V-238222

Group Title

SRG-OS-000070-GPOS-00038

Rule Version

UBTU-20-010051

Severity

CAT III

CCI(s)

• CCI-000193 - The information system enforces password complexity by the minimum number of lower case characters used.

Weight

10

Fix Recommendation

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

lcredit=-1

Check Contents

Verify the Ubuntu operating system enforces password complexity by requiring that at least one lower-case character be used.

Determine if the field "lcredit" is set in the "/etc/security/pwquality.conf" file with the following command:

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

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

Vulnerability Number

V-238222

Documentable

False

Rule Version

UBTU-20-010051

Severity Override Guidance

Verify the Ubuntu operating system enforces password complexity by requiring that at least one lower-case character be used.

Determine if the field "lcredit" is set in the "/etc/security/pwquality.conf" file with the following command:

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

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

Check Content Reference

M

Target Key

5318

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