The root account must be the only account having an UID of 0.

From SOLARIS 10 SPARC SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: ECLP-1

Associated with: CCI-000366

SV-39820r1_rule The root account must be the only account having an UID of 0.

Vulnerability discussion

If an account has an UID of 0, it has root authority. Multiple accounts with an UID of 0 afford more opportunity for potential intruders to guess a password for a privileged account.

Check content

Check the system for duplicate UID 0 assignments by listing all accounts assigned UID 0. Procedure: # awk -F: '$3 == 0' /etc/passwd If any accounts other than root are assigned UID 0, this is a finding.

Fix text

Remove or change the UID of accounts other than root that have UID 0.

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