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RHEL-09-611130 - RHEL 9 must require the change of at least four character classes when passwords are changed.
Information
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.
Solution
Configure RHEL 9 to require the change of at least four character classes when passwords are changed by setting the "minclass" 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 "minclass" parameter:
minclass = 4
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_RHEL_9_V2R8_STIG.zip
Item Details
Audit Name: DISA Red Hat Enterprise Linux 9 STIG v2r8
Category: IDENTIFICATION AND AUTHENTICATION
References: 800-53|IA-5(1)(b), CAT|II, CCI|CCI-000195, CCI|CCI-004066, Rule-ID|SV-258115r1045238_rule, STIG-ID|RHEL-09-611130, Vuln-ID|V-258115
Plugin: Unix
Control ID: 125c2da5811fd6c9619d02fa8e5b8574cde8cb7eddcb2fe909a7defb3f66d042