Title

Ubuntu 24.04 LTS must enforce password complexity by requiring that at least one uppercase character be used. (Cat II impact)

Discussion

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. Satisfies: SRG-OS-000069-GPOS-00037, SRG-OS-000730-GPOS-00190

Check Content

Verify Ubuntu 24.04 LTS enforces password complexity by requiring that at least one uppercase character be used with the following command: $ grep -i "ucredit" /etc/security/pwquality.conf ucredit=-1 If the "ucredit" parameter is greater than "-1", is commented out, or is missing, this is a finding.

Fix Text

Configure Ubuntu 24.04 LTS to enforce password complexity by requiring that at least one uppercase character be used. Add or update the "/etc/security/pwquality.conf" file to contain the "ucredit" parameter: ucredit=-1

Additional Identifiers

Rule ID: SV-270726r1066667_rule

Vulnerability ID: V-270726

Group Title: SRG-OS-000069-GPOS-00037

Expert Comments

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