Ubuntu 22.04 LTS must disable automatic mounting of Universal Serial Bus (USB) mass storage driver.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-260540 | UBTU-22-291010 | SV-260540r986276_rule | Medium |
| Description |
| 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. |
| STIG | Date |
| Canonical Ubuntu 22.04 LTS Security Technical Implementation Guide | 2025-05-16 |
Details
| Check Text (C-64269r953431_chk) |
| Verify Ubuntu 22.04 LTS disables ability to load the USB storage kernel module by using the following command: $ grep usb-storage /etc/modprobe.d/* | grep "/bin/false" /etc/modprobe.d/stig.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 22.04 LTS disables the ability to use USB mass storage device. $ grep usb-storage /etc/modprobe.d/* | grep -i "blacklist" /etc/modprobe.d/stig.conf:blacklist usb-storage If the command does not return any output, or the line is commented out, this is a finding. |
| Fix Text (F-64177r953432_fix) |
| Configure Ubuntu 22.04 LTS to disable using the USB storage kernel module. Create and/or append a custom file under "/etc/modprobe.d/" to contain the following: $ sudo su -c "echo install usb-storage /bin/false >> /etc/modprobe.d/stig.conf" Configure Ubuntu 22.04 LTS to disable the ability to use USB mass storage devices. $ sudo su -c "echo blacklist usb-storage >> /etc/modprobe.d/stig.conf" |