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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-780	GEN000360	SV-38454r1_rule	ECSC-1	Medium

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

STIG	Date
HP-UX 11.23 Security Technical Implementation Guide	2015-12-02

Details

Check Text ( C-36253r3_chk )
Confirm all accounts with a GID of 99 and below are used by a system account. If a GID reserved for system accounts (0 - 99) is used by a non-system account, this is a finding. The vendor-supplied system default group "users" (gid=20) is considered an exception to this check. # cat /etc/passwd | cut -f 1,4 -d ":"

Fix Text (F-31510r1_fix)
Change the primary group GID numbers for non-system accounts with reserved primary group GIDs (those less or equal to 99). # usermod -g