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The system must require passwords to contain no more than three consecutive repeating characters.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-50995 | OL6-00-000299 | SV-65201r1_rule | Low |
| Description |
|---|
| Passwords with excessive repeating characters may be more vulnerable to password-guessing attacks. |
| STIG | Date |
|---|---|
| Oracle Linux 6 Security Technical Implementation Guide | 2014-06-12 |
Details
| Check Text ( C-53441r1_chk ) |
|---|
| To check the maximum value for consecutive repeating characters, run the following command: $ grep pam_cracklib /etc/pam.d/system-auth Look for the value of the "maxrepeat" parameter. The DoD requirement is 3. If maxrepeat is not found or not set to the required value, this is a finding. |
| Fix Text (F-55801r2_fix) |
|---|
| The pam_cracklib module's "maxrepeat" parameter controls requirements for consecutive repeating characters. Edit the "/etc/pam.d/system-auth" file to include the following line prior to the "password include system-auth-ac" line: password required pam_cracklib.so maxrepeat=3 |