Finding ID | Version | Rule ID | IA Controls | Severity |
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V-38571 | RHEL-06-000059 | SV-50372r3_rule | Low |
Description |
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Requiring a minimum number of lower-case characters 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 | 2018-11-28 |
Check Text ( C-46129r3_chk ) |
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To check how many lower-case characters are required in a password, run the following command: $ grep pam_cracklib /etc/pam.d/system-auth /etc/pam.d/password-auth Note: The "lcredit" parameter (as a negative number) will indicate how many lower-case characters are required. The DoD requires at least one lower-case character in a password. This would appear as "lcredit=-1". If “lcredit” is not found or not set to the required value, this is a finding. |
Fix Text (F-43519r3_fix) |
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The pam_cracklib module's "lcredit=" parameter controls requirements for usage of lower-case letters in a password. When set to a negative number, any password will be required to contain that many lower-case characters. Edit /etc/pam.d/system-auth and /etc/pam.d/password-auth adding "lcredit=-1" after pam_cracklib.so to require use of a lower-case character in passwords. |