Vulnerability Discussion

Without identifying devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity.

Peripherals include, but are not limited to, devices such as flash drives, external storage, and printers.

Satisfies: SRG-OS-000114-GPOS-00059, SRG-OS-000378-GPOS-00163

Check

Verify that RHEL 9 file system automount function has been disabled and masked with the following command:

$ $ systemctl is-enabled autofs
masked

If the returned value is not "masked", "disabled", or "not-found", this is a finding.

Fix

Configure RHEL 9 to disable and mask the ability to automount devices.

The "autofs" service can be disabled with the following command:

$ sudo systemctl mask --now autofs.service