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RHEL 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-258102 | RHEL-09-611065 | SV-258102r997088_rule | 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 |
|---|---|
| Red Hat Enterprise Linux 9 Security Technical Implementation Guide | 2024-06-04 |
Details
| Check Text ( C-61843r926291_chk ) |
|---|
| Verify that RHEL 9 enforces password complexity by requiring at least one lowercase character. Check the value for "lcredit" with the following command: $ sudo grep 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-61767r926292_fix) |
|---|
| Configure RHEL 9 to enforce password complexity by requiring at least one lowercase character be 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 |