Ubuntu OS must enforce password complexity by requiring at least one numeric character be used.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-275651 | RIIM-OS-611020 | SV-275651r1148003_rule | CCI-004066 | 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. | ||||
| STIG | Date | |||
| Riverbed NetIM OS Security Technical Implementation Guide | 2025-10-02 | |||
Details
Check Text (C-275651r1148003_chk)
Verify with the following command that Ubuntu OS enforces password complexity by requiring at least one numeric character be used:
$ 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-79658r1148002_fix)
Configure Ubuntu OS to enforce password complexity by requiring at least one numeric character be used.
Add or modify the following line in the "/etc/security/pwquality.conf" file:
dcredit = -1