UBTU-18-010101 - The Ubuntu operating system must enforce password complexity by requiring that at least one lower-case character be used.


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.


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


See Also


Item Details

References: CAT|III, CCI|CCI-000193, Rule-ID|SV-219173r610963_rule, STIG-ID|UBTU-18-010101, STIG-Legacy|SV-109677, STIG-Legacy|V-100573, Vuln-ID|V-219173

Plugin: Unix

Control ID: 125d5a327e9a05b5b931564275c062711858a32824544a059bae9d4e32f18ff3