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
842 lines
43 KiB
HTML
842 lines
43 KiB
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||
<body lang=EN-US link=blue vlink=purple style='tab-interval:36.0pt'>
|
||
|
||
<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
|
||
Bypass Client Side JavaScript Validation <o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></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"'>Client-side validation
|
||
should not be considered a secure means of validating parameters. This
|
||
validation only helps reducing the amount of server processing time for normal
|
||
users who do not know the format of required input. Attackers can bypass these
|
||
mechanisms easily in various ways. Any client-side validation should be
|
||
duplicated on the server side. This will greatly reduce the likelihood of
|
||
insecure parameter values being used in the application. <o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></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"'>For this
|
||
exercise, the web site requires that you follow certain rules when you fill out
|
||
a form. The user should be able to break those rules, and send the website
|
||
input that it wasn't expecting.<o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";mso-no-proof:
|
||
yes'><!--[if gte vml 1]><v:shapetype id="_x0000_t75" coordsize="21600,21600"
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o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f"
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stroked="f">
|
||
<v:stroke joinstyle="miter"/>
|
||
<v:formulas>
|
||
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|
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|
||
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|
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|
||
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|
||
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|
||
<v:f eqn="sum @0 0 1"/>
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<v:f eqn="prod @6 1 2"/>
|
||
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|
||
<v:f eqn="sum @8 21600 0"/>
|
||
<v:f eqn="prod @7 21600 pixelHeight"/>
|
||
<v:f eqn="sum @10 21600 0"/>
|
||
</v:formulas>
|
||
<v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"/>
|
||
<o:lock v:ext="edit" aspectratio="t"/>
|
||
</v:shapetype><v:shape id="Picture_x0020_176" o:spid="_x0000_i1035" type="#_x0000_t75"
|
||
style='width:480pt;height:276.75pt;visibility:visible;mso-wrap-style:square'>
|
||
<v:imagedata src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image001.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image002.jpg" v:shapes="Picture_x0020_176"><![endif]></span><span
|
||
style='font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal style='page-break-after:avoid'><o:p> </o:p></p>
|
||
|
||
<p class=MsoCaption>Figure <!--[if supportFields]><span style='mso-element:
|
||
field-begin'></span><span style='mso-spacerun:yes'><3E></span>SEQ Figure \* ARABIC
|
||
<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 6<span style='font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>There are two
|
||
ways to complete this lesson. The first one is to submit a valid request like
|
||
the one from the screenshot above and intercept this using WebScarab. The
|
||
second way is to intercept the HTTP Response when loading the page and remove
|
||
the Javascript that validates the values.<o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<p class=MsoNormal><b><span style='font-family:"Arial","sans-serif"'>Solution 1<o:p></o:p></span></b></p>
|
||
|
||
<p class=MsoNormal><b style='mso-bidi-font-weight:normal'><i style='mso-bidi-font-style:
|
||
normal'><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></i></b></p>
|
||
|
||
<p class=MsoNormal style='page-break-after:avoid'><span style='font-family:
|
||
"Arial","sans-serif";mso-no-proof:yes'><!--[if gte vml 1]><v:shape id="Picture_x0020_177"
|
||
o:spid="_x0000_i1034" type="#_x0000_t75" style='width:480pt;height:276.75pt;
|
||
visibility:visible;mso-wrap-style:square'>
|
||
<v:imagedata src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image003.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image004.jpg" v:shapes="Picture_x0020_177"><![endif]></span></p>
|
||
|
||
<p class=MsoCaption>Figure <!--[if supportFields]><span style='mso-element:
|
||
field-begin'></span><span style='mso-spacerun:yes'><3E></span>SEQ Figure \* ARABIC
|
||
<span style='mso-element:field-separator'></span><![endif]--><span
|
||
style='mso-no-proof:yes'>2</span><!--[if supportFields]><span style='mso-element:
|
||
field-end'></span><![endif]--> Intercept request<span style='font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Add different
|
||
symbols to the fields and click "Accept changes".<o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<p class=MsoNormal style='page-break-after:avoid'><span style='font-family:
|
||
"Arial","sans-serif";mso-no-proof:yes'><!--[if gte vml 1]><v:shape id="Picture_x0020_178"
|
||
o:spid="_x0000_i1033" type="#_x0000_t75" style='width:480pt;height:276.75pt;
|
||
visibility:visible;mso-wrap-style:square'>
|
||
<v:imagedata src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image005.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image006.jpg" v:shapes="Picture_x0020_178"><![endif]></span></p>
|
||
|
||
<p class=MsoCaption>Figure <!--[if supportFields]><span style='mso-element:
|
||
field-begin'></span><span style='mso-spacerun:yes'><3E></span>SEQ Figure \* ARABIC
|
||
<span style='mso-element:field-separator'></span><![endif]--><span
|
||
style='mso-no-proof:yes'>3</span><!--[if supportFields]><span style='mso-element:
|
||
field-end'></span><![endif]--> Change parameters<span style='font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<p class=MsoNormal style='page-break-after:avoid'><span style='font-family:
|
||
"Arial","sans-serif";mso-no-proof:yes'><!--[if gte vml 1]><v:shape id="Picture_x0020_179"
|
||
o:spid="_x0000_i1032" type="#_x0000_t75" style='width:480pt;height:276.75pt;
|
||
visibility:visible;mso-wrap-style:square'>
|
||
<v:imagedata src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image007.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image008.jpg" v:shapes="Picture_x0020_179"><![endif]></span><span
|
||
style='font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
|
||
|
||
<p class=MsoCaption><span style='font-family:"Arial","sans-serif"'>Figure </span><!--[if supportFields]><span
|
||
style='font-family:"Arial","sans-serif"'><span style='mso-element:field-begin'></span><span
|
||
style='mso-spacerun:yes'><3E></span>SEQ Figure \* ARABIC <span style='mso-element:
|
||
field-separator'></span></span><![endif]--><span style='font-family:"Arial","sans-serif"'><span
|
||
style='mso-no-proof:yes'>4</span></span><!--[if supportFields]><span
|
||
style='font-family:"Arial","sans-serif"'><span style='mso-element:field-end'></span></span><![endif]--><span
|
||
style='font-family:"Arial","sans-serif"'> Lesson 6 Completed<o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><b><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></b></p>
|
||
|
||
<p class=MsoNormal><b><span style='font-family:"Arial","sans-serif"'>Solution 2<o:p></o:p></span></b></p>
|
||
|
||
<p class=MsoNormal><b style='mso-bidi-font-weight:normal'><i style='mso-bidi-font-style:
|
||
normal'><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></i></b></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Reload the
|
||
page by clicking on the menu item "How to bypass Client-Side Javascript
|
||
Validation" and intercept the response in WebScarab.<o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<p class=MsoNormal style='page-break-after:avoid'><!--[if gte vml 1]><v:oval
|
||
id="_x0000_s1026" style='position:absolute;margin-left:236.55pt;margin-top:7.55pt;
|
||
width:82.65pt;height:27pt;z-index:1' filled="f" strokecolor="red"/><![endif]--><![if !vml]><span
|
||
style='mso-ignore:vglayout;position:absolute;z-index:1;margin-left:314px;
|
||
margin-top:9px;width:113px;height:38px'><img width=113 height=38
|
||
src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image009.gif" v:shapes="_x0000_s1026"></span><![endif]><span
|
||
style='font-family:"Arial","sans-serif";mso-no-proof:yes'><!--[if gte vml 1]><v:shape
|
||
id="Picture_x0020_180" o:spid="_x0000_i1031" type="#_x0000_t75" style='width:480pt;
|
||
height:276.75pt;visibility:visible;mso-wrap-style:square'>
|
||
<v:imagedata src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image010.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image011.jpg" v:shapes="Picture_x0020_180"><![endif]></span></p>
|
||
|
||
<p class=MsoCaption>Figure <!--[if supportFields]><span style='mso-element:
|
||
field-begin'></span><span style='mso-spacerun:yes'><3E></span>SEQ Figure \* ARABIC
|
||
<span style='mso-element:field-separator'></span><![endif]--><span
|
||
style='mso-no-proof:yes'>5</span><!--[if supportFields]><span style='mso-element:
|
||
field-end'></span><![endif]--> Enable "Intercept responses"<span
|
||
style='font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<p class=MsoNormal style='page-break-after:avoid'><span style='font-family:
|
||
"Arial","sans-serif";mso-no-proof:yes'><!--[if gte vml 1]><v:shape id="Picture_x0020_181"
|
||
o:spid="_x0000_i1030" type="#_x0000_t75" style='width:480pt;height:276.75pt;
|
||
visibility:visible;mso-wrap-style:square'>
|
||
<v:imagedata src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image012.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image013.jpg" v:shapes="Picture_x0020_181"><![endif]></span></p>
|
||
|
||
<p class=MsoCaption>Figure <!--[if supportFields]><span style='mso-element:
|
||
field-begin'></span><span style='mso-spacerun:yes'><3E></span>SEQ Figure \* ARABIC
|
||
<span style='mso-element:field-separator'></span><![endif]--><span
|
||
style='mso-no-proof:yes'>6</span><!--[if supportFields]><span style='mso-element:
|
||
field-end'></span><![endif]--> Intercepted response<span style='font-family:
|
||
"Arial","sans-serif"'><o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>If you remove
|
||
the onclick="validate();" the "Submit" button will not work anymore.<o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Locate the
|
||
validate() Javascript function in the HTML page.<o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<p class=MsoNormal style='page-break-after:avoid'><span style='font-family:
|
||
"Arial","sans-serif";mso-no-proof:yes'><!--[if gte vml 1]><v:shape id="Picture_x0020_182"
|
||
o:spid="_x0000_i1029" type="#_x0000_t75" style='width:480pt;height:276.75pt;
|
||
visibility:visible;mso-wrap-style:square'>
|
||
<v:imagedata src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image014.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image015.jpg" v:shapes="Picture_x0020_182"><![endif]></span></p>
|
||
|
||
<p class=MsoCaption>Figure <!--[if supportFields]><span style='mso-element:
|
||
field-begin'></span><span style='mso-spacerun:yes'><3E></span>SEQ Figure \* ARABIC
|
||
<span style='mso-element:field-separator'></span><![endif]--><span
|
||
style='mso-no-proof:yes'>7</span><!--[if supportFields]><span style='mso-element:
|
||
field-end'></span><![endif]--> The function validate()</p>
|
||
|
||
<p class=MsoNormal><o:p> </o:p></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Removing the regular
|
||
expressions will remove the Javascript validation and submit the form.<o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<p class=MsoNormal style='page-break-after:avoid'><span style='font-family:
|
||
"Arial","sans-serif";mso-no-proof:yes'><!--[if gte vml 1]><v:shape id="Picture_x0020_183"
|
||
o:spid="_x0000_i1028" type="#_x0000_t75" style='width:480pt;height:276.75pt;
|
||
visibility:visible;mso-wrap-style:square'>
|
||
<v:imagedata src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image016.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image017.jpg" v:shapes="Picture_x0020_183"><![endif]></span></p>
|
||
|
||
<p class=MsoCaption>Figure <!--[if supportFields]><span style='mso-element:
|
||
field-begin'></span><span style='mso-spacerun:yes'><3E></span>SEQ Figure \* ARABIC
|
||
<span style='mso-element:field-separator'></span><![endif]--><span
|
||
style='mso-no-proof:yes'>8</span><!--[if supportFields]><span style='mso-element:
|
||
field-end'></span><![endif]--> Changed validate() function<span
|
||
style='font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Click "Accept
|
||
changes". This returns a HTML page like before but without any regular
|
||
expression checks.<o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<p class=MsoNormal style='page-break-after:avoid'><span style='font-family:
|
||
"Arial","sans-serif";mso-no-proof:yes'><!--[if gte vml 1]><v:shape id="Picture_x0020_184"
|
||
o:spid="_x0000_i1027" type="#_x0000_t75" style='width:480pt;height:276.75pt;
|
||
visibility:visible;mso-wrap-style:square'>
|
||
<v:imagedata src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image018.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image019.jpg" v:shapes="Picture_x0020_184"><![endif]></span></p>
|
||
|
||
<p class=MsoCaption>Figure <!--[if supportFields]><span style='mso-element:
|
||
field-begin'></span><span style='mso-spacerun:yes'><3E></span>SEQ Figure \* ARABIC
|
||
<span style='mso-element:field-separator'></span><![endif]--><span
|
||
style='mso-no-proof:yes'>9</span><!--[if supportFields]><span style='mso-element:
|
||
field-end'></span><![endif]--> It looks the same<span style='font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Change the
|
||
fields in the HTML page to contain symbols like @#@@# and click "Submit". <o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<p class=MsoNormal style='page-break-after:avoid'><span style='font-family:
|
||
"Arial","sans-serif";mso-no-proof:yes'><!--[if gte vml 1]><v:shape id="Picture_x0020_185"
|
||
o:spid="_x0000_i1026" type="#_x0000_t75" style='width:480pt;height:276.75pt;
|
||
visibility:visible;mso-wrap-style:square'>
|
||
<v:imagedata src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image020.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image021.jpg" v:shapes="Picture_x0020_185"><![endif]></span><span
|
||
style='font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
|
||
|
||
<p class=MsoCaption><span style='font-family:"Arial","sans-serif"'>Figure </span><!--[if supportFields]><span
|
||
style='font-family:"Arial","sans-serif"'><span style='mso-element:field-begin'></span><span
|
||
style='mso-spacerun:yes'><3E></span>SEQ Figure \* ARABIC <span style='mso-element:
|
||
field-separator'></span></span><![endif]--><span style='font-family:"Arial","sans-serif"'><span
|
||
style='mso-no-proof:yes'>10</span></span><!--[if supportFields]><span
|
||
style='font-family:"Arial","sans-serif"'><span style='mso-element:field-end'></span></span><![endif]--><span
|
||
style='font-family:"Arial","sans-serif"'> No more regular expression checks<o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<p class=MsoNormal style='page-break-after:avoid'><span style='font-family:
|
||
"Arial","sans-serif";mso-no-proof:yes'><!--[if gte vml 1]><v:shape id="Picture_x0020_186"
|
||
o:spid="_x0000_i1025" type="#_x0000_t75" style='width:480pt;height:276.75pt;
|
||
visibility:visible;mso-wrap-style:square'>
|
||
<v:imagedata src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image022.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/JavaScriptValidation_files/image023.jpg" v:shapes="Picture_x0020_186"><![endif]></span><span
|
||
style='font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
|
||
|
||
<p class=MsoCaption><span style='font-family:"Arial","sans-serif"'>Figure </span><!--[if supportFields]><span
|
||
style='font-family:"Arial","sans-serif"'><span style='mso-element:field-begin'></span><span
|
||
style='mso-spacerun:yes'><3E></span>SEQ Figure \* ARABIC <span style='mso-element:
|
||
field-separator'></span></span><![endif]--><span style='font-family:"Arial","sans-serif"'><span
|
||
style='mso-no-proof:yes'>11</span></span><!--[if supportFields]><span
|
||
style='font-family:"Arial","sans-serif"'><span style='mso-element:field-end'></span></span><![endif]--><span
|
||
style='font-family:"Arial","sans-serif"'> Lesson 6 Completed<o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<span style='font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-font-family:
|
||
"Times New Roman";mso-ansi-language:EN-US;mso-fareast-language:EN-US;
|
||
mso-bidi-language:AR-SA'><br clear=all style='mso-special-character:line-break;
|
||
page-break-before:always'>
|
||
</span>
|
||
|
||
<p class=MsoNormal><o:p> </o:p></p>
|
||
|
||
</div>
|
||
<table align='RIGHT' cellspacing='0' width='90%' border='0' cellpadding='0'>
|
||
<tr>
|
||
<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>
|