The TOSS file system automounter must be disabled unless required.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-252916 | TOSS-04-010050 | SV-252916r958498_rule | CCI-000778 | medium |
| Description | ||||
| Automatically mounting file systems permits easy introduction of unknown devices, thereby facilitating malicious activity. | ||||
| 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-252916r958498_chk)
Verify the operating system disables the ability to automount devices.
Check to see if automounter service is active with the following command:
Note: If the autofs service is not installed, this requirement is Not Applicable.
$ sudo systemctl status autofs
autofs.service - Automounts filesystems on demand
Loaded: loaded (/usr/lib/systemd/system/autofs.service; disabled)
Active: inactive (dead)
If the "autofs" status is set to "active" and is not documented with the Information System Security Officer (ISSO) as an operational requirement, this is a finding.
Fix Text (F-56319r824071_fix)
Configure the operating system to disable the ability to automount devices.
Turn off the automount service with the following commands:
$ sudo systemctl stop autofs
$ sudo systemctl disable autofs
If "autofs" is required for Network File System (NFS), it must be documented with the ISSO.