UIDs reserved for system accounts must not be assigned to non-system accounts.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-11946	GEN000340	SV-44825r1_rule		Medium

Description
Reserved UIDs are typically used by system software packages. If non-system accounts have UIDs in this range, they may conflict with system software, possibly leading to the user having permissions to modify system files.

STIG	Date
SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide	2018-09-19

Details

Check Text ( C-42297r1_chk )
Check the UID assignments for all accounts. # awk -F: '$3 <= 499 {printf "%15s:%4s\n", $1, $3}' /etc/passwd | sort -n -t: -k2 Confirm all accounts with a UID of 499 and below are used by a system account. If a UID reserved for system accounts (0 - 499) is used by a non-system account, then this is a finding.

Fix Text (F-38264r1_fix)
Change the UID numbers for non-system accounts with reserved UIDs (those less or equal to 499).