f99fad493c
git-svn-id: http://webgoat.googlecode.com/svn/trunk/webgoat@392 4033779f-a91e-0410-96ef-6bf7bf53c507
51 lines
2.1 KiB
HTML
51 lines
2.1 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>Solution Lab SQL Injection Stage4</title>
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<link rel="stylesheet" type="text/css"
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href="lesson_solutions/formate.css">
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</head>
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<body>
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<p><b>Lesson Plan Title:</b> How to Perform a SQLInjection</p>
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<p><b>Concept / Topic To Teach:</b><br />
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SQL injection attacks represent a serious threat to any database-driven
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site. The methods behind an attack are easy to learn and the damage
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caused can range from considerable to complete system compromise.
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Despite these risks, an incredible number of systems on the internet are
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susceptible to this form of attack.</p>
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<p>Not only is it a threat easily instigated, it is also a threat
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that, with a little common-sense and forethought, can easily be
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prevented.</p>
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<p>It is always good practice to sanitize all input data, especially
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data that will used in OS command, scripts, and database queiries, even
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if the threat of SQL injection has been prevented in some other manner.
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</p>
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<p><b>General Goal(s):</b><br />
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For this exercise, you will perform SQLInjection attacks. You will also
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implement code changes in the web application to defeat these attacks.</p>
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<b>Solution:</b><br />
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The solution is simular to Stage2. That is why here is only a short solution.<br/>
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You have to alter the class org.owasp.webgoat.lessons.SQLInjection.ViewProfile.java<br/>
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Alter the method getEmployeeProfile to something like this:
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<pre><code>
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String query = "SELECT employee.* "
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+ "FROM employee,ownership WHERE employee.userid = ownership.employee_id and "
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+ "ownership.employer_id = ? and ownership.employee_id = ?";
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try
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{
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Connection connection = WebSession.getConnections(s);
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PreparedStatement statement = connection.prepareStatement(query, ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
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statement.setString(1, userId);
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statement.setString(2, subjectUserId);
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ResultSet answer_results = statement.executeQuery();
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etc...
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</code></pre>
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</body>
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</html> |