The Red Hat Enterprise Linux operating system must be configured to disable USB mass storage.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-71983	RHEL-07-020100	SV-86607r3_rule		Medium

Description
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

STIG	Date
Red Hat Enterprise Linux 7 Security Technical Implementation Guide	2019-03-08

Details

Check Text ( C-72215r2_chk )
If there is an HBSS with a Device Control Module and a Data Loss Prevention mechanism, this requirement is not applicable. Verify the operating system disables the ability to use USB mass storage devices. Check to see if USB mass storage is disabled with the following command: # grep usb-storage /etc/modprobe.d/blacklist.conf blacklist usb-storage If the command does not return any output or the output is not "blacklist usb-storage", and use of USB storage devices is not documented with the Information System Security Officer (ISSO) as an operational requirement, this is a finding.

Check Text ( C-72215r2_chk )

If there is an HBSS with a Device Control Module and a Data Loss Prevention mechanism, this requirement is not applicable.

Verify the operating system disables the ability to use USB mass storage devices.

Check to see if USB mass storage is disabled with the following command:

# grep usb-storage /etc/modprobe.d/blacklist.conf
blacklist usb-storage

If the command does not return any output or the output is not "blacklist usb-storage", and use of USB storage devices is not documented with the Information System Security Officer (ISSO) as an operational requirement, this is a finding.

Fix Text (F-78335r2_fix)
Configure the operating system to disable the ability to use USB mass storage devices. # vi /etc/modprobe.d/blacklist.conf Add or update the line: blacklist usb-storage