SqlInjection7.java

package servlets.module.challenge;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.Locale;
import java.util.ResourceBundle;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.log4j.Logger;
import org.owasp.esapi.ESAPI;
import org.owasp.esapi.Encoder;

import utils.Hash;
import utils.ShepherdLogManager;
import utils.Validate;
import dbProcs.Database;
import dbProcs.Getter;
/**
 * Level : SQL Injection 7
 * <br><br>
 * 
 * This file is part of the Security Shepherd Project.
 * 
 * The Security Shepherd project is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.<br/>
 * 
 * The Security Shepherd project is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.<br/>
 * 
 * You should have received a copy of the GNU General Public License
 * along with the Security Shepherd project.  If not, see <http://www.gnu.org/licenses/>. 
 * @author Mark Denihan
 *
 */
public class SqlInjection7 extends HttpServlet
{
	private static final String levelName = "SQLi C7";
	private static String levelHash = "8c2dd7e9818e5c6a9f8562feefa002dc0e455f0e92c8a46ab0cf519b1547eced";
	private static final long serialVersionUID = 1L;
	private static org.apache.log4j.Logger log = Logger.getLogger(SqlInjection7.class);
	
	public void doPost (HttpServletRequest request, HttpServletResponse response) 
	throws ServletException, IOException
	{
		//Setting IpAddress To Log and taking header for original IP if forwarded from proxy
		ShepherdLogManager.setRequestIp(request.getRemoteAddr(), request.getHeader("X-Forwarded-For"));
		HttpSession ses = request.getSession(true);
		
		//Translation Stuff
		Locale locale = new Locale(Validate.validateLanguage(request.getSession()));
		ResourceBundle bundle = ResourceBundle.getBundle("i18n.servlets.challenges.sqli.sqli7", locale);
		if(Validate.validateSession(ses))
		{
			ShepherdLogManager.setRequestIp(request.getRemoteAddr(), request.getHeader("X-Forwarded-For"), ses.getAttribute("userName").toString());
			log.debug(levelName + " servlet accessed by: " + ses.getAttribute("userName").toString());
			PrintWriter out = response.getWriter();  
			out.print(getServletInfo());
			String htmlOutput = new String();
			String applicationRoot = getServletContext().getRealPath("");
			Encoder encoder = ESAPI.encoder();
			try
			{
				String subEmail = Validate.validateParameter(request.getParameter("subEmail"), 60);
				log.debug("subEmail - " + subEmail.replaceAll("\n", " \\\\n ")); //Escape \n's
				String subPassword = Validate.validateParameter(request.getParameter("subPassword"), 40);
				log.debug("subPassword - " + subPassword); 
				boolean validEmail = Validate.isValidEmailAddress(subEmail.replaceAll("\n", "")); //Ignore \n 's
				if(!subPassword.isEmpty() && !subPassword.isEmpty() && validEmail)
				{
					Connection conn = Database.getChallengeConnection(applicationRoot, "SqlChallengeSeven");
					try
					{
						log.debug("Signing in with subitted details");
						PreparedStatement prepstmt = conn.prepareStatement("SELECT userName FROM users WHERE userEmail = '" + subEmail + "' AND userPassword = ?;");
						prepstmt.setString(1, subPassword);
						ResultSet users = prepstmt.executeQuery();
						if(users.next())
						{
							htmlOutput = "<h3>" + bundle.getString("response.welcome")+ " " + encoder.encodeForHTML(users.getString(1)) + "</h3>"
									+ "<p>" + bundle.getString("response.resultKey")+ "" + Hash.generateUserSolution(Getter.getModuleResultFromHash(applicationRoot, levelHash), (String)ses.getAttribute("userName")) + "</p>";
						}
						else
						{
							htmlOutput = "<h3>" + bundle.getString("response.incorrectCreds")+ "</h3><p>" + bundle.getString("response.carefulNow")+ "</p>";
						}
					}
					catch(Exception e)
					{
						htmlOutput = "<h3>" + bundle.getString("response.incorrectCreds")+ "</h3><p>" + bundle.getString("response.carefulNow")+ "</p>";
						log.debug("Could Not Find User: " + e.toString());
						try
						{
							Thread.sleep(1000);
						}
						catch(Exception e1)
						{
							log.error("Failed to Pause: " + e1.toString());
						}
					}
					conn.close();
				}
				else
				{
					htmlOutput = new String("Invalid data submitted");
					if(!validEmail)
						htmlOutput += "" + bundle.getString("response.badEmail")+ "";
				}
			}
			catch(Exception e)
			{
				log.debug("Could not perform user login: " + e.toString());
				htmlOutput += "<p>" + bundle.getString("response.badRequest")+ "</p>";
				try
				{
					Thread.sleep(1000);
				}
				catch(Exception e2)
				{
					log.error("Failed to Pause: " + e2.toString());
				}
			}
			log.debug("*** " + levelName + " End ***");
			out.write(htmlOutput);
		}
		else
		{
			log.error(levelName + " servlet accessed with no session");
		}
	}
}