Bugtraq mailing list archives
Re: The out-of-domain NS registration attack
From: dgover () CINDY HOL GR (David, Gover)
Date: Wed, 15 Mar 2000 10:54:40 +0200
On Tue, 14 Mar 2000, D. J. Bernstein wrote:
Let's say an attacker wants to steal your mail to hotmail.com.
[snip]
The attacker then registers a new domain with NSI, using ns1.jsnet.com as the domain's server name, but his own IP address for ns1.jsnet.com: zerosecurity.com NS ns1.jsnet.com ns1.jsnet.com A 5.6.7.8
Afaik, you will be unable to do this, as for each host record at NSI, they also hold an IP address. When you specify ns1.jsnet.com as an NS for your domain, the IP address NSI already holds for this hostname is used. Even if you are able to specify a different address for 'ns1.jsnet.com' on your application form, NSI (should|will) either reject it, or ns1.jsnet.com will have both the old, and new A record on NSI's nameservers. Couldn't this lead to other major problems apart from stealing email? It's a while since I've registered a domain name with NSI, and so things may work slightly differently, than I have stated or expect.. Dave
Current thread:
- The out-of-domain NS registration attack D. J. Bernstein (Mar 13)
- Re: The out-of-domain NS registration attack David Terrell (Mar 14)
- Re: The out-of-domain NS registration attack David, Gover (Mar 15)
- Re: The out-of-domain NS registration attack D. J. Bernstein (Mar 20)
- Last call for paper - Raid 2000 - Deadline is March 31st Herve Debar (Mar 21)
- <Possible follow-ups>
- Re: The out-of-domain NS registration attack Sanford Whiteman (Mar 17)
- Re: The out-of-domain NS registration attack Chris Adams (Mar 20)