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V-274182

CAT II (Medium)

Amazon Linux 2023 file system automount function must be disabled unless required.

Rule ID

SV-274182r1120729_rule

STIG

Amazon Linux 2023 Security Technical Implementation Guide

Version

V1R3

CCIs

CCI-001958

Discussion

Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. Peripherals include, but are not limited to, such devices as flash drives, external storage, and printers.

Check Content

Verify Amazon Linux 2023 disables the file system automount function with the following command:

$ sudo systemctl is-enabled autofs
masked

If the returned value is not "masked", "disabled", "Failed to get unit file state for autofs.service for autofs", or "enabled", and is not documented as operational requirement with the information system security officer (ISSO), this is a finding.

Fix Text

Configure Amazon Linux 2023 to disable the ability to automount devices.

The autofs service can be disabled with the following command:

$ sudo systemctl mask --now autofs.service