← Back to Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide

V-282501

CAT II (Medium)

TOSS 5 must be configured to disable USB mass storage.

Rule ID

SV-282501r1200483_rule

STIG

Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide

Version

V1R1

CCIs

CCI-000778 CCI-001958 CCI-003959

Discussion

USB mass storage permits easy introduction of unknown devices, thereby facilitating malicious activity. Satisfies: SRG-OS-000114-GPOS-00059, SRG-OS-000378-GPOS-00163, SRG-OS-000690-GPOS-00140

Check Content

Verify TOSS 5 disables the ability to load the USB Storage kernel module using the following command:

$ sudo grep -r usb-storage /etc/modprobe.conf /etc/modprobe.d/* 

blacklist usb-storage

If the command does not return any output, the line is commented out, and use of USB Storage is not documented with the information system security officer (ISSO) as an operational requirement, this is a finding.

Fix Text

Configure the system to prevent the usb-storage kernel module from being loaded by adding the following line to the file /etc/modprobe.d/usb-storage.conf (or create usb-storage.conf if it does not exist):

install usb-storage /bin/false
blacklist usb-storage