Application: Asus Video Security
http://www.asus.com/products1.aspx?l1=2&share=icon/12
Versions: <= 3.5.0.0
(the version number is chaotic, this one seems the most
recent but doesn't exist an official website with the
latest updates and Asus didn't reply to me)
Platforms: Windows
Bugs: A] authorization buffer-overflow
B] directory traversal
Exploitation: remote
Date: 02 Nov 2005
Author: Luigi Auriemma
e-mail: aluigi (at) autistici (dot) org [email concealed]
web: http://aluigi.altervista.org
Asus Video Security is a monitoring software bundled with Asus graphic
cards.
By default the built-in web server is disabled so these bugs can be
exploited "only" if it has been manually activated.
Exists a buffer-overflow which happens during the handling of the
decoded (base64) username:password string sent to a password protected
ASUS Video Security web server.
The server is not vulnerable if doesn't use authorization.
The built-in web server is also vulnerable to a classical directory
traversal bug which allows an attacker to download any file in the disk
where the program is installed.
That's possible through the usage of the dot-dot-slash and backslash
patterns (HTTP encoded chars are not allowed in the web server).
If the server is protected with password the attacker must know the
right keyword.
#######################################################################
Luigi Auriemma
Application: Asus Video Security
http://www.asus.com/products1.aspx?l1=2&share=icon/12
Versions: <= 3.5.0.0
(the version number is chaotic, this one seems the most
recent but doesn't exist an official website with the
latest updates and Asus didn't reply to me)
Platforms: Windows
Bugs: A] authorization buffer-overflow
B] directory traversal
Exploitation: remote
Date: 02 Nov 2005
Author: Luigi Auriemma
e-mail: aluigi (at) autistici (dot) org [email concealed]
web: http://aluigi.altervista.org
#######################################################################
1) Introduction
2) Bugs
3) The Code
4) Fix
#######################################################################
===============
1) Introduction
===============
Asus Video Security is a monitoring software bundled with Asus graphic
cards.
By default the built-in web server is disabled so these bugs can be
exploited "only" if it has been manually activated.
#######################################################################
=======
2) Bugs
=======
--------------------------------
A] authorization buffer-overflow
--------------------------------
Exists a buffer-overflow which happens during the handling of the
decoded (base64) username:password string sent to a password protected
ASUS Video Security web server.
The server is not vulnerable if doesn't use authorization.
----------------------
B] directory traversal
----------------------
The built-in web server is also vulnerable to a classical directory
traversal bug which allows an attacker to download any file in the disk
where the program is installed.
That's possible through the usage of the dot-dot-slash and backslash
patterns (HTTP encoded chars are not allowed in the web server).
If the server is protected with password the attacker must know the
right keyword.
#######################################################################
===========
3) The Code
===========
http://aluigi.altervista.org/poc/asusvsbugs.zip
#######################################################################
======
4) Fix
======
No fix.
No reply from the vendor.
#######################################################################
---
Luigi Auriemma
http://aluigi.altervista.org
[ reply ]