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RHEL-09-291010 RHEL 9 must be configured to disable USB mass storage.

DISA STIG library V2R10
All changes in this version
first version loaded CAT II

Maps to CM-7(9), IA-3 via CCI-000778, CCI-001958, CCI-003959

Title

RHEL 9 must be configured to disable USB mass storage.

Control

Verify that RHEL 9 disables the ability to load the USB Storage kernel module with the following command: $ grep -r usb-storage /etc/modprobe.conf /etc/modprobe.d/* install usb-storage /bin/false blacklist usb-storage If the command does not return any output, or either line is commented out, and use of USB Storage is not documented with the information system security officer (ISSO) as an operational requirement, this is a finding.

Discussion

USB mass storage permits easy introduction of unknown devices, thereby facilitating malicious activity. Satisfies: SRG-OS-000114-GPOS-00059, SRG-OS-000378-GPOS-00163, SRG-OS-000480-GPOS-00227

Related controls

CCI-000778, CCI-001958, CCI-003959

Fix

To configure the system to prevent the usb-storage kernel module from being loaded, add the following lines to the file "/etc/modprobe.d/usb-storage.conf" (or create "usb-storage.conf" if it does not exist): install usb-storage /bin/false blacklist usb-storage