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


Overview

Finding ID Version Rule ID IA Controls Severity
V-773 GEN000880 SV-39820r1_rule IAIA-2 ECLP-1 IAIA-1 Medium
Description
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.
STIG Date
SOLARIS 9 SPARC SECURITY TECHNICAL IMPLEMENTATION GUIDE 2015-10-01

Details

Check Text ( C-38691r1_chk )
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 (F-24403r1_fix)
Remove or change the UID of accounts other than root that have UID 0.