All accounts on the system must have unique user or account names.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-761	GEN000300	SV-27064r1_rule	IAIA-1 IAIA-2	Medium

Description
A unique user name is the first part of the identification and authentication process. If user names are not unique, there can be no accountability on the system for auditing purposes. Multiple accounts sharing the same name could result in the Denial of Service to one or both of the accounts or unauthorized access to files or privileges.

STIG	Date
Draft AIX Security Technical Implementation Guide	2011-08-17

Details

Check Text ( C-27980r1_chk )
Perform the following to ensure there are no duplicate account names: # usrck -n ALL If any duplicate account names are found, this is a finding.

Fix Text (F-24342r1_fix)
Change user account names, or delete accounts, so each account has a unique name.