SecurityReason - Buffer-overflow in ASUS Remote Console 2.0.0.24

Advisory Text :

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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 (at) autistici (dot) org [email concealed]
web: aluigi.org

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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.

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2) Bug
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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).

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

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

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

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4) Fix
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No fix

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Luigi Auriemma
http://aluigi.org