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RE: [Full-disclosure] Microsoft DNS resolver: deliberately sabotaged hos

from [Mario Contestabile] Network Security [Permanent Link]
Subject: RE: [Full-disclosure] Microsoft DNS resolver: deliberately sabotaged hosts-file lookup
Date: Wed, 19 Apr 2006 11:56:53 -0400 

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




marioc@computer.org
http://bubbler.net/outlaw/blog


 

-----Original Message-----
From: Joachim Schipper [mailto:j.schipper@math.uu.nl] 
Sent: April 13, 2006 8:13 PM
To: full-disclosure@lists.grok.org.uk; bugtraq@securityfocus.com
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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