full-disclosure - Re: Windows Command Processor CMD.EXE Buffer Overflow

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Message-Id: <200610231807.04974.tillmann.werner@gmx.de>
Date: Mon, 23 Oct 2006 18:07:04 +0200
From: Tillmann Werner <tillmann.werner@....de>
To: full-disclosure@...ts.grok.org.uk
Subject: Re: Windows Command Processor CMD.EXE Buffer
	Overflow

Luis,

> Tried it on Win2k3 SP1:
> C:\Documents and Settings\Administrator>%COMSPEC% /K
> "dir\\?\AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
>A AAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
>A AAAA
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
> System replied:
> The filename or extension is too long.
>
>
> YEah! Buffer Overflow Windows XP SP2
>
> I Hill debug this.

What makes you think there is a buffer overflow? I'd say the 'dir' command 
reports an error for parameters beyond 256 chars. Just plain error handling, 
not a security issue, or am I missing something?

Tillmann

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