Title

AIX must not use removable media as the boot loader. (Cat II impact)

Discussion

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

Check Content

Check the servers boot lists for the "normal", "service", "both", or "prevboot" modes by command: # bootlist -m <mode> -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

Configure the system to use a bootloader installed on fixed media, such as: # bootlist -m normal hdisk0 # bootlist -m service hdisk0

Additional Identifiers

Rule ID: SV-215411r991589_rule

Vulnerability ID: V-215411

Group Title: SRG-OS-000480-GPOS-00227

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.