Automatic mounting of Universal Serial Bus (USB) mass storage driver must be disabled.

From Canonical Ubuntu 16.04 Security Technical Implementation Guide

Associated with: CCI-001958

SV-90211r2_rule Automatic mounting of Universal Serial Bus (USB) mass storage driver must be disabled.

Vulnerability discussion

Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity.Peripherals include, but are not limited to, such devices as flash drives, external storage, and printers.

Check content

Verify that automatic mounting of the Universal Serial Bus (USB) mass storage driver has been disabled. Check that the USB mass storage drive has not been loaded with the following command: #lsmod | grep usb-storage If a "usb-storage" line is returned, this is a finding. Check that automatic mounting of the USB mass storage driver has been disabled with the following command: #sudo modprobe -vn usb-storage install /bin/true If “install /bin/true” is not returned, this is a finding.

Fix text

Disable the mounting of the Universal Serial Bus (USB) mass storage driver by running the following command: # sudo echo “install usb-storage /bin/true” >> /etc/modprobe.d/DISASTIG.conf

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