The system must require at least four characters be changed between the old and new passwords during a password change.

From Solaris 10 SPARC Security Technical Implementation Guide

Associated with IA controls: IAIA-2, IAIA-1

Associated with: CCI-000195

SV-26324r1_rule The system must require at least four characters be changed between the old and new passwords during a password change.

Vulnerability discussion

To ensure password changes are effective in their goals, the system must ensure old and new passwords have significant differences. Without significant changes, new passwords may be easily guessed based on the value of a previously compromised password.

Check content

Fix text

Edit /etc/default/passwd and set or add a MINDIFF setting equal to or greater than 4.

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