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The root account must be the only account having unrestricted access to the TOSS system.

An XCCDF Rule

Description

If an account other than root also has a User Identifier (UID) of "0", it has root authority, giving that account unrestricted access to the entire operating system. Multiple accounts with a UID of "0" afford an opportunity for potential intruders to guess a password for a privileged account.

ID
SV-252937r991589_rule
Version
TOSS-04-010350
Severity
High
References
Updated

Remediation Templates

A Manual Procedure

Change the UID of any account on the system, other than root, that has a UID of "0." 

If the account is associated with system commands or applications, the UID should be changed to one greater than "0" but less than "1000." Otherwise, assign a UID of greater than "1000" that has not already been assigned.