Set Existing Passwords Maximum Age

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Configure non-compliant accounts to enforce a 365-day maximum password lifetime restriction by running the following command:

$ sudo chage -M 365


Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If the operating system does not limit the lifetime of passwords and force users to change their passwords, there is the risk that the operating system passwords could be compromised.


Shell script

The following script can be run on the host to remediate the issue.



while IFS= read -r i; do
    chage -M $var_accounts_maximum_age_login_defs $i

done <   <(awk -v var="$var_accounts_maximum_age_login_defs" -F: '(/^[^:]+:[^!*]/ && ($5 > var || $5 == "")) {print $1}' /etc/shadow)