RHEL 10 must enforce password complexity by requiring that at least one lowercase character be used.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-281183 | RHEL-10-600240 | SV-281183r1195427_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 must be tested before the password is compromised. Requiring a minimum number of lowercase characters makes password guessing attacks more difficult by ensuring a larger search space. | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 10 Security Technical Implementation Guide | 2026-03-11 | |||
Details
Check Text (C-281183r1195427_chk)
Verify RHEL 10 enforces password complexity by requiring that at least one lowercase character be used with the following command:
$ sudo grep -s lcredit /etc/security/pwquality.conf /etc/security/pwquality.conf/*.conf
/etc/security/pwquality.conf:lcredit = -1
If the value of "lcredit" is a positive number or is commented out, this is a finding.
Fix Text (F-85649r1195426_fix)
Configure RHEL 10 to enforce password complexity by requiring that at least one lowercase character be used by setting the "lcredit" option.
Add or update the following line in the "/etc/security/pwquality.conf" file or a configuration file in the "/etc/security/pwquality.conf.d/" directory to contain the "lcredit" parameter:
lcredit = -1