Title

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

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

Additional Identifiers

Rule ID: SV-90211r2_rule

Vulnerability ID: V-75531

Group Title:

Expert Comments

CCIs tied to check.

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