Fyi, Any NT app can bypass the local hosts file using DnsQuery(...,...,
DNS_QUERY_NO_HOSTS_FILE, ...);

marioc (at) computer (dot) org [email concealed]
http://bubbler.net/outlaw/blog

-----Original Message-----
From: Joachim Schipper [mailto:j.schipper (at) math.uu (dot) nl [email concealed]]
Sent: April 13, 2006 8:13 PM
To: full-disclosure (at) lists.grok.org (dot) uk [email concealed]; bugtraq (at) securityfocus (dot) com [email concealed]
Subject: Re: [Full-disclosure] Microsoft DNS resolver: deliberately
sabotaged hosts-file lookup

On Thu, Apr 13, 2006 at 06:29:15PM +0100, Dave Korn wrote:
>
> Hey, guess what I just found out: Microsoft have deliberately
> sabotaged their DNS client's hosts table lookup functionality.

> (...) I'd try to block (Windows Media Player) it in my hosts file.

> Microsoft DNS client special-cases 'go.microsoft.com' and refuses to
> look it up in the hosts file.

> I'm running fully up-to-date Windows XP SP2. I don't have any pfw
> software that could conceivably be interfering, and the windows
> firewall is running with more-or-less the default settings (I've only
> added a couple of exceptions, no other changes). I don't think this is a
false positive.

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