82e32acb77
* Solutions added * Bugfixes * Introduction added (including how to start with webgoat and useful tools) * New lesson: Password strength * New lessons: Multi Level Login * Not yet working new lesson: Session fixation (inital release) git-svn-id: http://webgoat.googlecode.com/svn/trunk@301 4033779f-a91e-0410-96ef-6bf7bf53c507
56 lines
2.2 KiB
HTML
56 lines
2.2 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 Role Based Access Control Stage4</title>
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<link rel="stylesheet" type="text/css" href="/WebGoat/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 Cross Site Scripting (XSS)</p>
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<p><b>Concept / Topic To Teach:</b><br/>
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In role-based access control scheme, a role represents
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a set of access permissions and privileges. A user can be
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assigned one or more roles. A role-based access control
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normally consists of two parts: role permission management
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and role assignment. A broken role-based access
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control scheme might allow a user to perform accesses
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that are not allowed by his/her assigned roles, or
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somehow obtain unauthorized roles.
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</p>
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<p><b>General Goal(s):</b><br/>
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Your goal is to explore the access control
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rules that govern this site. Each role has permission to
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certain resources (A-F). Each user is assigned one or more roles.
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Only the user with the [Admin] role should have access
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to the 'F' resources. In a successful attack, a user doesn't
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have the [Admin] role can access resource F.
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</p>
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<p>
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<b>Solution:</b><br/>
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You have to be sure that the user is AUTHORIZED to do an action and that
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he is authorized to do this action on a certain employee! So you have to check for his authorization.
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You have to write some code in the class
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org.owasp.webgoat.lessons.RoleBasedAccesControl.RoleBasedAccessControl.java.
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Alter the handleRequest method as there is happening the dispatching.
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Action has already a method called isAuthorizedForEmployee which you can use:
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</p>
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<pre><code>
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//***************CODE HERE*************************
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if(!isAuthorized(s, userId, requestedActionName))
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{
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throw new UnauthorizedException();
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}
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if(!action.isAuthorizedForEmployee(s, userId, employeeId))
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{
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throw new UnauthorizedException();
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}
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//*************************************************
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</code></pre>
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Try the attack again and you will see that the authorization fails and the
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lesson is completed.
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</body>
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</html> |