Updated System Integrity Protection status reporting script

After writing a Casper Extension Attribute script to report on the status of System Integrity Protection, I realized that I hadn’t accounted for reporting SIP’s custom configurations. These are configurations where SIP is enabled, but one or more of SIP’s protections or restrictions has been disabled. I’ve now updated the script to also report on the following SIP configurations:

• Kext Signing: disabled
• Filesystem Protections: disabled
• NVRAM Protections: disabled
• Debugging Restrictions: disabled
• DTrace Restrictions: disabled

For more details, please see below the jump.

The script has the following functions:

If the Mac is running 10.10.x or earlier

The script reports System Integrity Protection Not Available For and then reports the relevant version of OS X. For example, the script returns the following output on a Mac running OS X 10.10.5:

System Integrity Protection Not Available For 10.10.5

If the Mac is running 10.11.x or later

This script uses csrutil status to check SIP’s status.

If System Integrity Protection is disabled, the script returns the following output:

System Integrity Protection status: Disabled

If System Integrity Protection is enabled, the script returns the following output:

System Integrity Protection status: Active

If SIP has custom configurations, the script will return output similar to that shown below:

System Integrity Protection status: Active
Kext Signing: disabled
Filesystem Protections: disabled
NVRAM Protections: disabled
Debugging Restrictions: disabled
DTrace Restrictions: disabled

This script is designed to be generic and usable by most reporting systems. I have also updated the counterpart Casper Extension Attribute with this same functionality.

For those interested, the script is available below and also from on my GitHub repo:

https://github.com/rtrouton/rtrouton_scripts/tree/master/rtrouton_scripts/check_system_integrity_protection_status

	#!/bin/bash
	osvers_major=$(sw_vers -productVersion | awk -F. '{print $1}')
	osvers_minor=$(sw_vers -productVersion | awk -F. '{print $2}')
	# Checks to see if the OS on the Mac is 10.x.x. If it is not, the
	# following message is displayed without quotes:
	#
	# "Unknown Version Of Mac OS X"
	if [[ ${osvers_major} -ne 10 ]]; then
	/bin/echo "Unknown Version of Mac OS X"
	fi
	# Checks to see if the OS on the Mac is 10.11.x or higher.
	# If it is not, the following message is displayed without quotes:
	#
	# "System Integrity Protection Not Available For" followed by the version of OS X.
	if [[ ${osvers_major} -eq 10 ]] && [[ ${osvers_minor} -lt 11 ]]; then
	/bin/echo "System Integrity Protection Not Available For `sw_vers -productVersion`"
	fi
	if [[ ${osvers_major} -eq 10 ]] && [[ ${osvers_minor} -ge 11 ]]; then
	# Checks System Integrity Protection status on Macs
	# running 10.11.x or higher
	SIP_status=`/usr/bin/csrutil status | awk '/status/ {print $5}' | sed 's/\.$//'`
	if [ $SIP_status = "disabled" ]; then
	result=Disabled
	elif [ $SIP_status = "enabled" ]; then
	SIP_status="Active"
	# If SIP is enabled, run 'csrutil status' a second time
	# and export the output to a text file with a randomly
	# generated name.
	sip_output="/tmp/`/usr/bin/uuidgen`.txt"
	/usr/bin/csrutil status > "$sip_output"
	# Check the exported text file to see any custom SIP configuration
	# options have been enabled. If any custom SIP configurations are
	# active, display the configuration status.
	sip_kernel_extension_allowed=`cat "$sip_output" | grep -io "Kext Signing: disabled"`
	if [[ ${sip_kernel_extension_allowed} != "" ]]; then
	sip_kernel=`/usr/bin/printf "\n$sip_kernel_extension_allowed"`
	fi
	sip_filesystem_allowed=`cat "$sip_output" | grep -io "Filesystem Protections: disabled"`
	if [[ ${sip_filesystem_allowed} != "" ]]; then
	sip_filesystem=`/usr/bin/printf "\n$sip_filesystem_allowed"`
	fi
	sip_nvram_allowed=`cat "$sip_output" | grep -io "NVRAM Protections: disabled"`
	if [[ ${sip_nvram_allowed} != "" ]]; then
	sip_nvram=`/usr/bin/printf "\n$sip_nvram_allowed"`
	fi
	sip_debug_allowed=`cat "$sip_output" | grep -io "Debugging Restrictions: disabled"`
	if [[ ${sip_debug_allowed} != "" ]]; then
	sip_debug=`/usr/bin/printf "\n$sip_debug_allowed"`
	fi
	sip_dtrace_allowed=`cat "$sip_output" | grep -io "DTrace Restrictions: disabled"`
	if [[ ${sip_dtrace_allowed} != "" ]]; then
	sip_dtrace=`/usr/bin/printf "\n$sip_dtrace_allowed"`
	fi
	if [[ -e "$sip_output" ]]; then
	/bin/rm "$sip_output"
	fi
	result="$SIP_status$sip_kernel$sip_filesystem$sip_nvram$sip_debug$sip_dtrace"
	fi
	/bin/echo "System Integrity Protection status: ""$result"
	fi

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