Ubuntu 22.04 LTS must enforce password complexity by requiring that at least one numeric character be used.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-260562	UBTU-22-611020	SV-260562r986287_rule		Medium

Description
Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

Description

Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.

STIG	Date
Canonical Ubuntu 22.04 LTS Security Technical Implementation Guide	2024-05-30

Details

Check Text ( C-64291r953497_chk )
Verify Ubuntu 22.04 LTS enforces password complexity by requiring that at least one numeric character be used by using the following command: $ grep -i dcredit /etc/security/pwquality.conf dcredit = -1 If "dcredit" is greater than "-1", is commented out, or is missing, this is a finding.

Fix Text (F-64199r953498_fix)
Configure Ubuntu 22.04 LTS to enforce password complexity by requiring that at least one numeric character be used. Add or modify the following line in the "/etc/security/pwquality.conf" file: dcredit = -1