5d930ec235
* 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/webgoat@301 4033779f-a91e-0410-96ef-6bf7bf53c507
915 lines
44 KiB
HTML
915 lines
44 KiB
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|
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<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
|
||
Spoof an Authentication Cookie <o:p></o:p></span></p>
|
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|
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|
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<!-- Start Instructions -->
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Many
|
||
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|
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authentication cookie is specified. Some times the cookie values can be
|
||
guessed if the algorithm for generating the cookie can be obtained. Some
|
||
times the cookies are left on the client machine and can be stolen by
|
||
exploiting another system vulnerability. Some times the cookies maybe
|
||
intercepted using Cross site scripting. This lesson tries to make the
|
||
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|
||
defeat the cookie authentication method in this lesson.<br style='mso-special-character:
|
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<!-- Stop Instructions -->
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|
||
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|
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|
||
|
||
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|
||
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|
||
|
||
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|
||
|
||
<h2><span style='color:windowtext'>Solution:<o:p></o:p></span></h2>
|
||
|
||
<p class=MsoNormal><o:p> </o:p></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Make sure
|
||
that you have "Show Cookies" enabled in WebGoat. And you need to disable the
|
||
feature "Inject know cookies into requests" in WebScarab otherwise WebScarab
|
||
will always inject your old cookie and not the new cookie.<o:p></o:p></span></p>
|
||
|
||
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||
|
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|
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|
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|
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src="/WebGoat/lesson_solutions/WeakAuthenticationCookie_files/image019.jpg" v:shapes="Picture_x0020_596"><![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'>1</span><!--[if supportFields]><span style='mso-element:
|
||
field-end'></span><![endif]--> Disable "Inject known cookies into
|
||
requests"<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:
|
||
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|
||
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|
||
visibility:visible;mso-wrap-style:square'>
|
||
<v:imagedata src="/WebGoat/lesson_solutions/WeakAuthenticationCookie_files/image003.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=631 height=364
|
||
src="/WebGoat/lesson_solutions/WeakAuthenticationCookie_files/image020.jpg" v:shapes="Picture_x0020_597"><![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]--> Logon with webgoat/webgoat<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"'>You can login
|
||
with webgoat/webgoat.<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_598"
|
||
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/WeakAuthenticationCookie_files/image005.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/WeakAuthenticationCookie_files/image021.jpg" v:shapes="Picture_x0020_598"><![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]--> Logged on as webgoat</p>
|
||
|
||
<p class=MsoNormal><o:p> </o:p></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Hit
|
||
"Refresh". This refresh will show our AuthCookie. And you are now authenticated
|
||
using this cookie and not with parameters like above.<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";mso-no-proof:
|
||
yes'><!--[if gte vml 1]><v:shape id="Picture_x0020_599" 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/WeakAuthenticationCookie_files/image007.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/WeakAuthenticationCookie_files/image022.jpg" v:shapes="Picture_x0020_599"><![endif]></span><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 is a
|
||
new cookie called AuthCookie with values 65432ubphcfx. Logout and login with
|
||
aspect/aspect.<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_600"
|
||
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/WeakAuthenticationCookie_files/image009.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/WeakAuthenticationCookie_files/image023.jpg" v:shapes="Picture_x0020_600"><![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'>4</span><!--[if supportFields]><span style='mso-element:
|
||
field-end'></span><![endif]--> Logon as aspect/aspect<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_601"
|
||
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/WeakAuthenticationCookie_files/image011.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/WeakAuthenticationCookie_files/image024.jpg" v:shapes="Picture_x0020_601"><![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]--> Logged on as aspect<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"'>Hit "Refresh"
|
||
to see the new cookie.<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_602"
|
||
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/WeakAuthenticationCookie_files/image013.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/WeakAuthenticationCookie_files/image025.jpg" v:shapes="Picture_x0020_602"><![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]--> Cookie for user aspect<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"'>You have now
|
||
a different cookie value for AuthCookie: 65432udfgfb<o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
|
||
|
||
<table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0
|
||
style='margin-left:39.6pt;border-collapse:collapse;border:none;mso-border-alt:
|
||
solid windowtext .5pt;mso-yfti-tbllook:1184;mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
|
||
mso-border-insideh:.5pt solid windowtext;mso-border-insidev:.5pt solid windowtext'>
|
||
<tr style='mso-yfti-irow:0;mso-yfti-firstrow:yes;height:20.25pt'>
|
||
<td width=216 valign=top style='width:162.0pt;border:solid windowtext 1.0pt;
|
||
mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt;height:20.25pt'>
|
||
<p class=MsoNormal style='line-height:115%'><span style='font-family:"Arial","sans-serif"'>webgoat<o:p></o:p></span></p>
|
||
</td>
|
||
<td width=259 valign=top style='width:194.25pt;border:solid windowtext 1.0pt;
|
||
border-left:none;mso-border-left-alt:solid windowtext .5pt;mso-border-alt:
|
||
solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt;height:20.25pt'>
|
||
<p class=MsoNormal style='line-height:115%'><span style='font-family:"Arial","sans-serif"'>ubphcfx<o:p></o:p></span></p>
|
||
</td>
|
||
</tr>
|
||
<tr style='mso-yfti-irow:1;mso-yfti-lastrow:yes;height:24.0pt'>
|
||
<td width=216 valign=top style='width:162.0pt;border:solid windowtext 1.0pt;
|
||
border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:solid windowtext .5pt;
|
||
padding:0cm 5.4pt 0cm 5.4pt;height:24.0pt'>
|
||
<p class=MsoNormal style='line-height:115%'><span style='font-family:"Arial","sans-serif"'>Aspect<o:p></o:p></span></p>
|
||
</td>
|
||
<td width=259 valign=top style='width:194.25pt;border-top:none;border-left:
|
||
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
|
||
mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;
|
||
mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt;height:24.0pt'>
|
||
<p class=MsoNormal style='line-height:115%'><span style='font-family:"Arial","sans-serif"'>udfgfb<o:p></o:p></span></p>
|
||
</td>
|
||
</tr>
|
||
</table>
|
||
|
||
<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"'>This is an transposition
|
||
of the letters of the alphabet. Each letter is replaced with its successor, for
|
||
example t->u, a->b and the user name is reversed. So for user name <st1:place
|
||
w:st="on"><st1:City w:st="on">alice</st1:City></st1:place> the cookie will
|
||
contain the reversed user name ecila and the successors of the letters. This
|
||
results in fdjmb.<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"'>Login with
|
||
user name <st1:place w:st="on"><st1:City w:st="on">alice</st1:City></st1:place>
|
||
and intercept the request in WebScarab. Add AuthCookie=65432fdjmb to the
|
||
existing cookie JSESSIONID.<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"'><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_603"
|
||
o:spid="_x0000_i1026" type="#_x0000_t75" style='width:459.75pt;height:362.25pt;
|
||
visibility:visible;mso-wrap-style:square'>
|
||
<v:imagedata src="/WebGoat/lesson_solutions/WeakAuthenticationCookie_files/image015.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=613 height=483
|
||
src="/WebGoat/lesson_solutions/WeakAuthenticationCookie_files/image026.jpg" v:shapes="Picture_x0020_603"><![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]--> Add AuthCookie to 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 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_604"
|
||
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/WeakAuthenticationCookie_files/image017.png" o:title=""/>
|
||
</v:shape><![endif]--><![if !vml]><img width=640 height=369
|
||
src="/WebGoat/lesson_solutions/WeakAuthenticationCookie_files/image027.jpg" v:shapes="Picture_x0020_604"><![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'>8</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 11 Completed<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><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>
|