Finding ID | Version | Rule ID | IA Controls | Severity |
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V-217892 | RHEL-06-000056 | SV-217892r505923_rule | Low |
Description |
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Requiring digits makes password guessing attacks more difficult by ensuring a larger search space. |
STIG | Date |
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Red Hat Enterprise Linux 6 Security Technical Implementation Guide | 2020-09-03 |
Check Text ( C-19373r462373_chk ) |
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To check how many digits are required in a password, run the following command: $ grep pam_cracklib /etc/pam.d/system-auth /etc/pam.d/password-auth Note: The "dcredit" parameter (as a negative number) will indicate how many digits are required. The DoD requires at least one digit in a password. This would appear as "dcredit=-1". If “dcredit” is not found or not set to the required value, this is a finding. |
Fix Text (F-19371r462374_fix) |
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The pam_cracklib module's "dcredit" parameter controls requirements for usage of digits in a password. When set to a negative number, any password will be required to contain that many digits. When set to a positive number, pam_cracklib will grant +1 additional length credit for each digit. Edit /etc/pam.d/system-auth and /etc/pam.d/password-auth adding "dcredit=-1" after pam_cracklib.so to require use of a digit in passwords. |