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The macOS system must be configured to disable the tftp service.


Overview

Finding ID Version Rule ID IA Controls Severity
V-225187 AOSX-15-002038 SV-225187r610901_rule High
Description
The "tftp" service must be disabled as it sends all data in a clear-text form that can be easily intercepted and read. The data needs to be protected at all times during transmission, and encryption is the standard method for protecting data in transit. If the data is not encrypted during transmission, it can be plainly read (i.e., clear text) and easily compromised. Disabling ftp is one way to mitigate this risk. Administrators should be instructed to use an alternate service for data transmission that uses encryption, such as SFTP. Additionally, the "tftp" service uses UDP which is not secure.
STIG Date
Apple OS X 10.15 (Catalina) Security Technical Implementation Guide 2022-06-06

Details

Check Text ( C-26886r467729_chk )
To check if the tfptd service is disabled, run the following command:

sudo launchctl print-disabled system | grep tftpd

If the results do not show the following, this is a finding:
"com.apple.tftpd" => true
Fix Text (F-26874r467730_fix)
To disable the tfpd service, run the following command:

/usr/bin/sudo /bin/launchctl disable system/com.apple.tftpd