TOSS must be configured to disable USB mass storage.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-253082 | TOSS-04-040280 | SV-253082r986606_rule | CCI-000778 | 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 | ||||
| STIG | Date | |||
| Tri-Lab Operating System Stack (TOSS) 4 Security Technical Implementation Guide | 2025-05-08 | |||
Related Frameworks
4 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
IA-3
1.00
- DISA · 2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1712 mappings
3.5.1
1.00
- DISA · 2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
3.5.2
1.00
- DISA · 2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-000778
1.00
- DISA · 2 · disa_xccdf · related
Details
Check Text (C-253082r986606_chk)
Verify the operating system disables the ability to load the USB Storage kernel module.
$ sudo grep -r usb-storage /etc/modprobe.d/* | grep "install"
install usb-storage /bin/false
If the command does not return any output, or the 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.
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:
$ sudo grep -r usb-storage /etc/modprobe.d/* | grep "blacklist"
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 ISSO as an operational requirement, this is a finding.
Fix Text (F-56485r942858_fix)
Configure the operating system to disable the ability to use the USB Storage kernel module.
Create a file under "/etc/modprobe.d" with the following command:
$ sudo touch /etc/modprobe.d/usb-storage.conf
Add the following line to the created file:
install usb-storage /bin/false
Configure the operating system to disable the ability to use USB mass storage devices.
$ sudo vi /etc/modprobe.d/blacklist.conf
Add or update the line:
blacklist usb-storage