OL 9 must enforce password complexity by requiring that at least one lowercase character be used.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-271615 | OL09-00-001015 | SV-271615r1091557_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. Requiring a minimum number of lowercase characters makes password guessing attacks more difficult by ensuring a larger search space. | ||||
| STIG | Date | |||
| Oracle Linux 9 Security Technical Implementation Guide | 2025-05-08 | |||
Details
Check Text (C-271615r1091557_chk)
Verify that OL 9 enforces password complexity by requiring at least one lowercase character.
Check the value for "lcredit" with the following command:
$ grep lcredit /etc/security/pwquality.conf /etc/security/pwquality.conf.d/*.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-75572r1091556_fix)
Configure OL 9 to enforce password complexity by requiring at least one lowercase character is used by setting the "lcredit" option.
Add the following line to "/etc/security/pwquality.conf" (or modify the line to have the required value):
lcredit = -1