Secure communication channel for transmitting customer information
import java.net.Socket
import java.io._
import play.api._
import play.api.mvc._
// Controller for handling requests
class HomeController extends Controller {
def sendInfo = Action { request =>
val socket = new Socket("localhost", 23)
val out = new PrintWriter(socket.getOutputStream, true)
val in = new BufferedReader(new InputStreamReader(socket.getInputStream))
// Sending customer information over insecure Telnet channel
out.println("Customer Username: " + request.body.asFormUrlEncoded.get("username").mkString)
out.println("Customer Password: " + request.body.asFormUrlEncoded.get("password").mkString)
socket.close()
Ok("Information sent")
}
}
The above Scala code snippet is a part of a Play Framework backend application. It represents a controller named
HomeController
that has a method
sendInfo
, which is used to send customer data.
The vulnerability lies in the
sendInfo
method where it opens a socket to a localhost on port 23, which is the default port for Telnet. Telnet is an insecure protocol as it does not encrypt its data. This means that any data sent over this protocol can be easily captured in plain text.
The method then creates a
PrintWriter
for sending data over the socket and a
BufferedReader
for reading data from the socket. The customer's username and password are then retrieved from the request body and sent over the Telnet channel using the
PrintWriter
.
The use of Telnet to transmit sensitive information such as usernames and passwords constitutes a major security vulnerability. An attacker can easily intercept the data transmission and gain unauthorized access to the customer's information.
import java.net.Socket
import javax.net.ssl.{SSLSocketFactory, SSLSocket}
import java.io._
import play.api._
import play.api.mvc._
// Controller for handling requests
class HomeController extends Controller {
def sendInfo = Action { request =>
val socketFactory: SSLSocketFactory = SSLSocketFactory.getDefault().asInstanceOf[SSLSocketFactory]
val socket: SSLSocket = socketFactory.createSocket("localhost", 443).asInstanceOf[SSLSocket]
val out = new PrintWriter(socket.getOutputStream, true)
val in = new BufferedReader(new InputStreamReader(socket.getInputStream))
// Sending customer information over secure SSL channel
out.println("Customer Username: " + request.body.asFormUrlEncoded.get("username").mkString)
out.println("Customer Password: " + request.body.asFormUrlEncoded.get("password").mkString)
socket.close()
Ok("Information sent")
}
}
The updated code replaces the insecure Telnet channel with a secure SSL channel. The
Socket
class is replaced with
SSLSocket
, which is a secure socket using SSL/TLS protocols to encrypt the data transmitted over the channel.
The
SSLSocketFactory
is used to create the
SSLSocket
. The
SSLSocketFactory
is obtained by calling the
getDefault
method, which returns the default SSL socket factory. The default SSL socket factory is determined by the system property
javax.net.ssl.SSLSocketFactory
. If this system property is not set, the default SSL socket factory is an instance of
javax.net.ssl.SSLSocketFactory
.
The
SSLSocket
is created by calling the
createSocket
method on the
SSLSocketFactory
, passing the server's hostname and port number as arguments. The port number is changed from 23 (the default port for Telnet) to 443 (the default port for HTTPS).
The customer's username and password are sent over the secure SSL channel by calling the
println
method on the
PrintWriter
object, which is created by passing the
SSLSocket
's output stream to the
PrintWriter
constructor.
The
SSLSocket
is closed after the customer's information is sent.
The server must be configured to use the secure channel and enforce HTTPS for all requests. The client-side code must also use HTTPS when making requests to the server. Proper authentication and authorization mechanisms should be implemented to protect customer information. Additional security measures, such as encryption of sensitive data at rest and in transit, should be considered.