Detecting user approved MDM using the profiles command line tool on macOS 10.13.4

Starting in macOS 10.13.2, Apple introduced the concept of User Approved MDM Enrollment (UAMDM). UAMDM grants mobile device management (MDM) additional management privileges, beyond what is allowed for macOS MDM enrollments which have not been “user approved”. As of macOS 10.13.4, the only additional management privilege associated with UAMDM is that it allows you to deploy a profile which provides a white list for third-party kernel extensions. However, I would anticipate that this list will grow over time.

Starting in macOS 10.13.4, you can use the profiles command line tool to determine if a machine is enrolled into a MDM, and if user-approved MDM is enabled. To do this, run the command shown below:

profiles status -type enrollment

Depending on your MDM enrollment status, you may see one of the following statuses shown below:

No MDM enrollment

computername:~ username$ profiles status -type enrollment
Enrolled via DEP: No
MDM enrollment: No
computername:~ username$

MDM enrolled, without user-approved MDM enabled

computername:~ username$ profiles status -type enrollment
Enrolled via DEP: No
MDM enrollment: Yes
computername:~ username$

MDM enrolled, with user-approved MDM enabled

computername:~ username$ profiles status -type enrollment
Enrolled via DEP: No
MDM enrollment: Yes (User Approved)
computername:~ username$

DEP Enrolled

computername:~ username$ profiles status -type enrollment
Enrolled via DEP: Yes
MDM enrollment: Yes (User Approved)
computername:~ username$

Note: If your Mac is enrolled in Apple’s Device Enrollment Program (DEP), it automatically gets user-approved MDM.

To help detect if a particular Mac has user-approved MDM enabled, I’ve written a script. For more details, please see below the jump.

The script first checks the OS on a particular Mac and verifies that it is running macOS 10.13.4 or later. If the Mac is running an earlier OS, the script reports the following:

Unable To Detect User-Approved MDM On, followed by the OS version.

If the script verifies that the Mac is running macOS 10.13.4 or later, the script continues on to determine if the Mac has user-approved MDM enabled.

If the Mac has user-approved MDM enabled, the script reports the following:

Yes

If the Mac does not have user-approved MDM enabled, the script reports the following:

No

The script is available below, and at the following address on GitHub:

https://github.com/rtrouton/rtrouton_scripts/tree/master/rtrouton_scripts/detect_user-approved_mdm

A complementary Jamf Pro Extension Attribute is available at the following address on GitHub:

https://github.com/rtrouton/rtrouton_scripts/tree/master/rtrouton_scripts/Casper_Extension_Attributes/detect_user-approved_mdm

	#!/bin/bash
	# Script which reports if user-approved mobile device management
	# is enabled on a particular Mac.
	UAMDMCheck(){
	# This function checks if a Mac has user-approved MDM enabled.
	# If the UAMDMStatus variable returns "User Approved", then the
	# following status is returned:
	#
	# Yes
	#
	# If anything else is returned, the following status is
	# returned:
	#
	# No
	UAMDMStatus=$(profiles status -type enrollment | grep -o "User Approved")
	if [[ "$UAMDMStatus" = "User Approved" ]]; then
	result="Yes"
	else
	result="No"
	fi
	}
	# Check to see if the OS version of the Mac includes a version of the profiles tool which
	# can report on user-approved MDM. If the OS check passes, run the UAMDMCheck function.
	osvers_major=$(/usr/bin/sw_vers -productVersion | awk -F. '{print $1}')
	osvers_minor=$(/usr/bin/sw_vers -productVersion | awk -F. '{print $2}')
	osvers_dot_version=$(/usr/bin/sw_vers -productVersion | awk -F. '{print $3}')
	if [[ ${osvers_major} -eq 10 ]] && [[ ${osvers_minor} -ge 14 ]]; then
	UAMDMCheck
	elif [[ ${osvers_major} -eq 10 ]] && [[ ${osvers_minor} -eq 13 ]] && [[ ${osvers_dot_version} -ge 4 ]]; then
	UAMDMCheck
	else
	# If the OS check did not pass, the script sets the following string for the "result" value:
	#
	# "Unable To User-Approved MDM On", followed by the OS version. (no quotes)
	result="Unable To Detect User-Approved MDM On $(/usr/bin/sw_vers -productVersion)"
	fi
	echo "$result"

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detect_user-approved_mdm.sh

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