OL 9 must require the maximum number of repeating characters of the same character class be limited to four when passwords are changed.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-271618 | OL09-00-001030 | SV-271618r1091566_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 a password, the greater the number of possible combinations that need to be tested before the password is compromised. |
| STIG | Date |
| Oracle Linux 9 Security Technical Implementation Guide | 2025-05-08 |
Details
| Check Text (C-75668r1091564_chk) |
| Verify that OL 9 requires the maximum number of repeating characters of the same character class be limited to four when passwords are changed. Verify the value of the "maxclassrepeat" option in "/etc/security/pwquality.conf" with the following command: $ grep maxclassrepeat /etc/security/pwquality.conf /etc/security/pwquality.conf.d/*.conf maxclassrepeat = 4 If the value of "maxclassrepeat" is set to "0", more than "4", or is commented out, this is a finding. |
| Fix Text (F-75575r1091565_fix) |
| Configure OL 9 to require the change of the number of repeating characters of the same character class when passwords are changed by setting the "maxclassrepeat" option. Add the following line to "/etc/security/pwquality.conf" conf (or modify the line to have the required value): maxclassrepeat = 4 |