OL 9 must disable automatic mounting of Universal Serial Bus (USB) mass storage driver.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-271702 | OL09-00-002332 | SV-271702r1091818_rule | CCI-003959 | 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 | |||
| Oracle Linux 9 Security Technical Implementation Guide | 2025-05-08 | |||
Details
Check Text (C-271702r1091818_chk)
Verify that OL 9 disables automatic mounting of the USB storage kernel module with the following command:
$ grep usb-storage /etc/modprobe.d/* | grep "/bin/true"
install usb-storage /bin/true
If the command does not return any output, or the line is commented out, this is a finding.
Verify the operating system disables the ability to use USB mass storage device.
$ grep usb-storage /etc/modprobe.d/* | grep -i "blacklist"
blacklist usb-storage
If the command does not return any output, or the line is commented out, this is a finding.
Fix Text (F-75659r1091817_fix)
Configure OL 9 to disable using the USB storage kernel module.
Create a file under "/etc/modprobe.d" to contain the following:
# sudo su -c "echo install usb-storage /bin/true >> /etc/modprobe.d/DISASTIG.conf"
Configure the operating system to disable the ability to use USB mass storage devices.
# sudo su -c "echo blacklist usb-storage >> /etc/modprobe.d/DISASTIG.conf"