The system must require passwords contain no more than three consecutive repeating characters.

From Oracle Linux 5 Security Technical Implementation Guide

Associated with: CCI-000366

SV-64079r1_rule The system must require passwords contain no more than three consecutive repeating characters.

Vulnerability discussion

To enforce the use of complex passwords, the number of consecutive repeating characters is limited. Passwords with excessive repeated characters may be more vulnerable to password-guessing attacks.

Check content

Check the maxrepeat setting. Procedure: Check the password maxrepeat configuration # grep pam_cracklib.so /etc/pam.d/system-auth If the maxrepeat option is missing, this is a finding. If the maxrepeat option is set to more than 3, this is a finding.

Fix text

Edit "/etc/pam.d/system-auth" to include the line: password required pam_cracklib.so maxrepeat=3 prior to the "password include system-auth-ac" line.

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.