Restructured the baseline to remove extra src/main directory structure. Added eclipes project file
git-svn-id: http://webgoat.googlecode.com/svn/branches/webgoat-6.0@485 4033779f-a91e-0410-96ef-6bf7bf53c507
This commit is contained in:
mayhew64@gmail.com
165
java/org/owasp/webgoat/lessons/CsrfTokenByPass.java
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165
java/org/owasp/webgoat/lessons/CsrfTokenByPass.java
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package org.owasp.webgoat.lessons;
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import java.security.SecureRandom;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Random;
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import javax.servlet.http.HttpSession;
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import org.apache.ecs.Element;
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import org.apache.ecs.ElementContainer;
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import org.apache.ecs.StringElement;
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import org.apache.ecs.html.A;
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import org.apache.ecs.html.B;
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import org.apache.ecs.html.BR;
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import org.apache.ecs.html.Form;
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import org.apache.ecs.html.H1;
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import org.apache.ecs.html.Input;
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import org.owasp.webgoat.session.WebSession;
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import org.owasp.webgoat.util.HtmlEncoder;
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/***************************************************************************************************
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*
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*
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* This file is part of WebGoat, an Open Web Application Security Project utility. For details,
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* please see http://www.owasp.org/
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*
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* This program is free software; you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
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* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with this program; if
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* not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Getting Source ==============
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*
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* Source for this application is maintained at code.google.com, a repository for free software
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* projects.
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*
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* For details, please see http://code.google.com/p/webgoat/
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*
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* @author Contributed by <a href="http://www.partnet.com">PartNet.</a>
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*
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*/
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public class CsrfTokenByPass extends CsrfPromptByPass
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{
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protected static final String TRANSFER_FUNDS_PARAMETER = "transferFunds";
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private static final String CSRFTOKEN = "CSRFToken";
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private static final int INVALID_TOKEN = 0;
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private final Random random;
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public CsrfTokenByPass(){
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super();
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random = new SecureRandom();
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}
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/**
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* if TRANSFER_FUND_PARAMETER is a parameter, them doTransfer is invoked. doTranser presents the
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* web content to confirm and then execute a simulated transfer of funds. An initial request
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* should have a dollar amount specified. The amount will be stored and a confirmation form is presented.
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* The confirmation can be canceled or confirmed. Confirming the transfer will mark this lesson as completed.
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*
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* @param s
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* @return Element will appropriate web content for a transfer of funds.
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*/
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protected Element doTransfer(WebSession s) {
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String transferFunds = HtmlEncoder.encode(s.getParser().getRawParameter(TRANSFER_FUNDS_PARAMETER, ""));
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String passedInTokenString = HtmlEncoder.encode(s.getParser().getRawParameter(CSRFTOKEN, ""));
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ElementContainer ec = new ElementContainer();
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if (transferFunds.length() != 0)
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{
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HttpSession httpSession = s.getRequest().getSession();
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//get tokens to validate
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Integer sessionToken = (Integer) httpSession.getAttribute(CSRFTOKEN);
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Integer passedInToken = s.getParser().getIntParameter(CSRFTOKEN, INVALID_TOKEN);
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if (transferFunds.equalsIgnoreCase(TRANSFER_FUNDS_PAGE)){
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//generate new random token:
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int token = INVALID_TOKEN;
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while (token == INVALID_TOKEN){
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token = random.nextInt();
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}
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httpSession.setAttribute(CSRFTOKEN, token);
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//present transfer form
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ec.addElement(new H1("Electronic Transfer:"));
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String action = getLink();
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Form form = new Form(action, Form.POST);
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form.addAttribute("id", "transferForm");
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form.addElement( new Input(Input.text, TRANSFER_FUNDS_PARAMETER, "0"));
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form.addElement( new Input(Input.hidden, CSRFTOKEN, token));
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form.addElement( new Input(Input.submit));
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ec.addElement(form);
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//present transfer funds form
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} else if (transferFunds.length() > 0 && sessionToken != null && sessionToken.equals(passedInToken)){
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//transfer is confirmed
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ec.addElement(new H1("Electronic Transfer Complete"));
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ec.addElement(new StringElement("Amount Transfered: "+transferFunds));
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makeSuccess(s);
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}
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//white space
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ec.addElement(new BR());
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ec.addElement(new BR());
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ec.addElement(new BR());
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}
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return ec;
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}
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private final static Integer DEFAULT_RANKING = new Integer(123);
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@Override
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protected Integer getDefaultRanking()
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{
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return DEFAULT_RANKING;
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}
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@Override
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protected List<String> getHints(WebSession s)
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{
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List<String> hints = new ArrayList<String>();
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hints.add("Add 'transferFunds=main' to the URL and inspect the form that is returned");
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hints.add("The forged request needs both a token and the transfer funds parameter");
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hints.add("Find the token in the page with transferFunds=main. Can you script a way to get the token?");
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return hints;
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}
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/**
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* Gets the title attribute of the MessageBoardScreen object
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*
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* @return The title value
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*/
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public String getTitle()
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{
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return ("CSRF Token By-Pass");
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}
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public Element getCredits()
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{
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A partnet = new A("http://www.partnet.com");
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partnet.setPrettyPrint(false);
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partnet.addElement(new StringElement("PART"));
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partnet.addElement(new B().addElement(new StringElement("NET")).setPrettyPrint(false));
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partnet.setStyle("background-color:midnightblue;color:white");
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ElementContainer credits = new ElementContainer();
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credits.addElement(new StringElement("Contributed by "));
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credits.addElement(partnet);
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return credits;
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}
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}
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