Finding ID | Version | Rule ID | IA Controls | Severity |
---|---|---|---|---|
V-230369 | RHEL-08-020230 | SV-230369r858785_rule | Medium |
Description |
---|
The shorter the password, the lower the number of possible combinations that need to be tested before the password is compromised. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password length is one factor of several that helps to determine strength and how long it takes to crack a password. Use of more characters in a password helps to increase exponentially the time and/or resources required to compromise the password. RHEL 8 utilizes "pwquality" as a mechanism to enforce password complexity. Configurations are set in the "etc/security/pwquality.conf" file. The "minlen", sometimes noted as minimum length, acts as a "score" of complexity based on the credit components of the "pwquality" module. By setting the credit components to a negative value, not only will those components be required, they will not count towards the total "score" of "minlen". This will enable "minlen" to require a 15-character minimum. The DoD minimum password requirement is 15 characters. |
STIG | Date |
---|---|
Red Hat Enterprise Linux 8 Security Technical Implementation Guide | 2023-12-01 |
Check Text ( C-33038r833326_chk ) |
---|
Verify the operating system enforces a minimum 15-character password length. The "minlen" option sets the minimum number of characters in a new password. Check for the value of the "minlen" option with the following command: $ sudo grep -r minlen /etc/security/pwquality.conf* /etc/security/pwquality.conf:minlen = 15 If the command does not return a "minlen" value of 15 or greater, this is a finding. If conflicting results are returned, this is a finding. |
Fix Text (F-33013r858784_fix) |
---|
Configure operating system to enforce a minimum 15-character password length. Add the following line to "/etc/security/pwquality.conf" (or modify the line to have the required value): minlen = 15 Remove any configurations that conflict with the above value. |