Finding ID | Version | Rule ID | IA Controls | Severity |
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V-208832 | OL6-00-000057 | SV-208832r603263_rule | Low |
Description |
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Requiring a minimum number of uppercase characters makes password guessing attacks more difficult by ensuring a larger search space. |
STIG | Date |
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Oracle Linux 6 Security Technical Implementation Guide | 2021-03-01 |
Check Text ( C-9085r357476_chk ) |
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To check how many uppercase characters are required in a password, run the following command: $ grep pam_cracklib /etc/pam.d/system-auth /etc/pam.d/password-auth The "ucredit" parameter (as a negative number) will indicate how many uppercase characters are required. The DoD requires at least one uppercase character in a password. This would appear as "ucredit=-1". If the “ucredit” parameter is not found or not set to the required value, this is a finding. |
Fix Text (F-9085r357477_fix) |
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The pam_cracklib module's "ucredit=" parameter controls requirements for usage of uppercase letters in a password. When set to a negative number, any password will be required to contain that many uppercase characters. When set to a positive number, pam_cracklib will grant +1 additional length credit for each uppercase character. Edit /etc/pam.d/system-auth and /etc/pam.d/password-auth adding "ucredit=-1" after pam_cracklib.so to require use of an uppercase character in passwords. |