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UBTU-24-300039 Ubuntu 24.04 LTS must disable automatic mounting of Universal Serial Bus (USB) mass storage driver.

DISA STIG library V1R7
All changes in this version
first version loaded CAT II

Maps to CM-7(9), IA-3 via CCI-003959, CCI-001958

Title

Ubuntu 24.04 LTS must disable automatic mounting of Universal Serial Bus (USB) mass storage driver.

Control

Verify that Ubuntu 24.04 LTS disables the ability to load the USB storage kernel module with the following command: $ sudo grep usb-storage /etc/modprobe.d/* | grep "/bin/false" /etc/modprobe.d/DISASTIG.conf:install usb-storage /bin/false If the command does not return any output, or the line is commented out, this is a finding. Verify Ubuntu 24.04 LTS disables the ability to use USB mass storage devices. $ sudo grep usb-storage /etc/modprobe.d/* | grep -i "blacklist" /etc/modprobe.d/DISASTIG.conf:blacklist usb-storage If the command does not return any output, or the line is commented out, this is a finding.

Discussion

Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. Peripherals include, but are not limited to, devices such as flash drives, external storage, and printers. Satisfies: SRG-OS-000690-GPOS-00140, SRG-OS-000378-GPOS-00163

Related controls

CCI-001958, CCI-003959

Fix

Configure Ubuntu 24.04 LTS to disable using the USB storage kernel module with the following command: $ sudo su -c "echo install usb-storage /bin/false >> /etc/modprobe.d/DISASTIG.conf" Configure Ubuntu 24.04 LTS to disable the ability to use USB mass storage devices with the following command: $ sudo su -c "echo blacklist usb-storage >> /etc/modprobe.d/DISASTIG.conf"