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UBTU-24-400280 - Ubuntu 24.04 LTS must enforce password complexity by requiring that at least one numeric character be used.
Information
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-000071-GPOS-00039, SRG-OS-000730-GPOS-00190
Solution
Configure Ubuntu 24.04 LTS to enforce password complexity by requiring that at least one numeric character be used.Add or update the "/etc/security/pwquality.conf" file to contain the "dcredit" parameter:
dcredit=-1
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_CAN_Ubuntu_24-04_LTS_V1R5_STIG.zip
Item Details
Audit Name: DISA Canonical Ubuntu 24.04 LTS STIG v1r5
Category: IDENTIFICATION AND AUTHENTICATION
References: 800-53|IA-5(1)(a), CAT|II, CCI|CCI-004065, CCI|CCI-004066, Rule-ID|SV-270728r1066673_rule, STIG-ID|UBTU-24-400280, Vuln-ID|V-270728
Plugin: Unix
Control ID: 46bdd0b85cd25e2e2874a0a44c7bd5d78b75db7e64598d1fabc30b2c32815d2c