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V-773

CAT II (Medium)

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

Rule ID

SV-44900r1_rule

STIG

SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide

Version

V1R12

CCIs

CCI-000366

Discussion

If an account has a UID of 0, it has root authority. Multiple accounts with a 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:
# cat /etc/passwd | awk -F":" '{print$1":"$3":"}' | grep ":0:"

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.