[NT] 2Wire-Gateway Cross Site Scripting And Directory Transversal Bug In SSL Form

From: SecuriTeam (support_at_securiteam.com)
Date: 01/22/04

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Date: 22 Jan 2004 17:12:03 +0200

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      2Wire-Gateway Cross Site Scripting And Directory Transversal Bug In SSL
    Form
    ------------------------------------------------------------------------

    SUMMARY

     <http://www.2wire.com> 2Wire "is a communication company that sells
    internet and network related devices, such as routers. 2Wire most common
    routers' webserver is "2Wire-Gateway". It includes an SSL (Secure Sockets
    Layer) form of authentification.

    The SSL (Secure Sockets Layer) form authentification has an XSS (Cross
    Site Scripting) condition that allows an attacker to change form action
    parameters. An attacker is able to inject scripts or URLs thereby enabling
    him/her to traverse directories on the server.

    DETAILS

    Vulnerable Systems:
     * All versions

    The SSL authentication form has a security vulnerability which allows a
    remote attacker to change the form parameters. An attacker is able to
    inject scripts and URLs and thereby traverse the directory structure on
    the server. This allows in turn to view and download any local file.
    However, the issue is hard to exploit as the attacker has to connect to
    the target through the browser and accept the SSL connection.

    #######################################################################

    ===========
    3) The Code
    ===========

    < form name="wralogin" method="get"
    action="http://<
    host>/wra/public/wralogin/?error=61&return=password/../../..
    /../boot.ini">
    < input type="hidden" name="authcode" value="MUQmqC/sBiXfslfYEooIJg==">
    < center>
    < input type="password" name="password" value="">
    < input type="submit" alt="Submit" width="58" height="19" border="0"><
    /td>
    < /form>
    < /body>
    < /html>

    #######################################################################

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:the_insider at mail.com>
    Rafel Ivgi, The-Insider

    ========================================

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