User passwords must be changed at least every 60 days.

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

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

Associated with: CCI-000180

SV-38939r1_rule User passwords must be changed at least every 60 days.

Vulnerability discussion

Limiting the lifespan of authenticators limits the period of time an unauthorized user has access to the system while using compromised credentials and reduces the period of time available for password-guessing attacks to run against a single password.

Check content

Check the maxage field for each user. The field represents the number of weeks a password is valid. Procedure: # /usr/sbin/lsuser -a maxage ALL If the maxage field is 0 or greater than 8 for any user, this is a finding.

Fix text

Use the chsec command to set the maxage field to 8 for each user. # chsec -f /etc/security/user -s default -a maxage=8 # chuser maxage=8 < user id >

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