Default system accounts must be disabled or removed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-27263	GEN002640	SV-810r2_rule		Medium

Description
Vendor accounts and software may contain backdoors allowing unauthorized access to the system. These backdoors are common knowledge and present a threat to system security if the account is not disabled.

STIG	Date
VMware ESX 3 Server	2016-05-13

Details

Check Text ( C-552r2_chk )
Determine if default system accounts (such as those for sys, bin, uucp, nuucp, daemon, smtp, gdm, lp, nobody) have been disabled. # cat /etc/shadow If an account's password field is "*", "*LK*", or is prefixed with a "!", the account is locked or disabled. If there is any default system accounts not locked, this is a finding.

Fix Text (F-964r2_fix)
Lock the default system account(s). # passwd -l