bugtraq - Buffer-overflow in ASUS Remote Console 2.0.0.24

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Message-Id: <20080321231640.1f8238bb.aluigi@autistici.org>
Date: Fri, 21 Mar 2008 23:16:40 +0100
From: Luigi Auriemma <aluigi@...istici.org>
To: bugtraq@...urityfocus.com, full-disclosure@...ts.grok.org.uk,
	packet@...ketstormsecurity.org, cert@...t.org, news@...uriteam.com,
	vuln@...unia.com
Subject: Buffer-overflow in ASUS Remote Console 2.0.0.24


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

                             Luigi Auriemma

Application:  ASUS Remote Console
              http://www.asus.com/999/html/share/9/icon/9/index.htm#asmb3
Versions:     <= 2.0.0.24
Platforms:    Windows
Bug:          buffer overflow
Exploitation: remote
Date:         21 Mar 2008
Author:       Luigi Auriemma
              e-mail: aluigi@...istici.org
              web:    aluigi.org


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


1) Introduction
2) Bug
3) The Code
4) Fix


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===============
1) Introduction
===============


>From the manual:
"The ASUS Remote Console (ARC) is an efficient and flexible application
that allows monitoring and control of the remote host."

The main component of this service is a telnet server listening on port
623 which is called DpcProxy and provides an IPMI interface.


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

======
2) Bug
======


The DPC Proxy is affected by a buffer-overflow vulnerability located in
the function which gets the data received from the client, stores them
in a stack buffer of about 1024 bytes and checks the presence of an end
of line delimiter (carriage return).


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

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


http://aluigi.org/poc/asuxdpc.txt

  nc SERVER 623 -v -v -w 2 < asuxdpc.txt


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

======
4) Fix
======


No fix


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


--- 
Luigi Auriemma
http://aluigi.org