AIX must not use removable media as the boot loader.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-91649	AIX7-00-003113	SV-101747r1_rule		Medium

Description
Malicious users with removable boot media can gain access to a system configured to use removable media as the boot loader.

STIG	Date
IBM AIX 7.x Security Technical Implementation Guide	2020-02-24

Details

Check Text ( C-90803r1_chk )
Check the servers boot lists for the "normal", "service", "both", or "prevboot" modes by command: # bootlist -m -o Ensure "hdisk{x}" is the only devices listed. If boot devices, such as "cd{x}", "fd{x}", "rmt{x}", or "ent{x}" are used, this is a finding.

Fix Text (F-97847r1_fix)
Configure the system to use a bootloader installed on fixed media, such as: # bootlist -m normal hdisk0 # bootlist -m service hdisk0