Fixes #2450 by allowing any length extension

git-svn-id: file:///home/svn/framework3/trunk@10411 4d416f70-5f16-0410-b530-b9f4589650da

modules/exploits/windows/browser/webdav_dll_hijacker.rb

@@ -111,7 +111,7 @@ class Metasploit3 < Msf::Exploit::Remote
 			return
 		end
 
-		if (request.uri =~ /\.(...?)$/i)
+		if (request.uri =~ /\.[a-z0-9]+$/i)
 			print_status("#{cli.peerhost}:#{cli.peerport} GET => DATA (#{request.uri})")
 			data = "HELLO!"
 			send_response(cli, data, { 'Content-Type' => 'application/octet-stream' })