bugtraq - Re: BoF in Windows 2000: ddeshare.exe

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Date: Wed, 10 Nov 2004 11:19:08 -0800 (PST)
From: "J. S. Connell" <ankh@...uck.gen.nz>
To: bugtraq@...urityfocus.com
Subject: Re: BoF in Windows 2000: ddeshare.exe

On Tue, 9 Nov 2004 Valdis.Kletnieks@...edu wrote:

> Ah, but what if the 2 trailing B's are replaced by 2 Unicode chars that
> together take up 4 bytes? ;)

Or we can realize that in Windows NT, XP, and above, all "characters" are
two-byte-wide UNICODE characters, and that we're not seeing "[NULs]
inserted between characters" but simply UNICODE characters with very low
ordinals.

It's probably worth pointing out that a large fraction of the 16-bit
UNICODE space is taken up with Chinese, Japanese, and Korean characters.

In fact, UNICODE codepoint 0x9090 happens to be the Chinese character for
[li3], "winding" or "meandering".  Chinese poetry shellcode, anybody?

--Jeffrey