full-disclosure - Windows XP SP1 - Microsoft FTP Client

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From: anthrax101 at gmail.com (Aaron Horst)
Subject: Windows XP SP1 - Microsoft FTP Client

Seems to be the classic buffer overflow. It's really easy to write a
little script to take advantage of this due to the -s switch for the
ftp program. I doubt that you could do anything remote with it though,
if you're able to drop a random binary file on the HD and execute a
command, there are better methods of attack. ;) If you're interested
in learning about buffer overflows, figure out how to attack this one.
It's really simple, and as easy as you're going to get.

AnthraX101


On Sat, 13 Nov 2004 19:53:18 -0200, phoenix <phoenix@...orce.com.br> wrote:
> I was testing something on my ftp client, and I got an access violation.
> 
> Microsoft Windows XP SP1 (BR) - Microsoft FTP Client
> 
> --------------------------------------------------------------------------------
> Conectado a localhost.
> 220 Website FTP Server Ready
> Usu?rio (localhost:(none)): ftp
> 331 Anonymous login ok, send your complete email address as your password.
> Senha:
> 230 Anonymous access granted, restrictions apply.
> ftp> quote dir
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAA
> 500 DIR not understood
> ftp>
> ..nothing here..
> 
> --------------------------------------------------------------------------------
> Conectado a localhost.
> 220 Website FTP Server Ready
> Usu?rio (localhost:(none)): ftp
> 331 Anonymous login ok, send your complete email address as your password.
> Senha:
> 230 Anonymous access granted, restrictions apply.
> ftp> quote dir
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> ..CRASH..
> 
> --------------------------------------------------------------------------------
> Conectado a localhost.
> 220 Website FTP Server Ready
> Usu?rio (localhost:(none)): ftp
> 331 Anonymous login ok, send your complete email address as your password.
> Senha:
> 230 Anonymous access granted, restrictions apply.
> ftp> quote dir
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> 500 DIR not understood
> 500 DIR not understood
> 500 DIR not understood
> 500 DIR not understood
> 500 DIR not understood
> 500 DIR not understood
> ..more and more..
> ..will it stop?..
> 
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