nanog mailing list archives
Re: TLD servers with recursion was Re: Exploit for DNS Cache Poisoning - RELEASED
From: Gadi Evron <ge () linuxbox org>
Date: Thu, 24 Jul 2008 10:23:41 -0500 (CDT)
On Thu, 24 Jul 2008, John Kristoff wrote:
On Thu, 24 Jul 2008 10:06:25 +0100 Simon Waters <simonw () zynet net> wrote:I checked last night, and noticed TLD servers for .VA and .MUSEUM are still offering recursion amongst a load of less popular top level domains. Indeed just under 10% of the authoritative name servers mentioned in the root zone file still offer recursion.While not ideal, at least most resolvers will not go asking those servers for anything other than what they are authoritative for unless an attacker for some reason wanted to setup a long chain of poisons. The large, shared caching servers and all those open CPE devices are a much larger concern I think.
Indeed--you won't hear arguments from me on other threats, especially not CPE devices which I fought to bring recognition to.
But sticking to the point, TLD servers should (under most circumstances) be recursive. Thing is, those that are, are likely to stay that way.
I personally know several folks from within and wayyy from outside the DNS world who discovered this very out there and obvious issue and worked hard to try and contact the operators. Those that haven't fixed it yet, likely won't if all thing remain even.
Others I am not aware of likely did the same, withs imilar results. I guess we could try again.
Gadi.
Current thread:
- Re: Exploit for DNS Cache Poisoning - RELEASED Paul Ferguson (Jul 23)
- <Possible follow-ups>
- Re: Exploit for DNS Cache Poisoning - RELEASED Paul Ferguson (Jul 23)
- Re: Exploit for DNS Cache Poisoning - RELEASED Tuc at T-B-O-H.NET (Jul 23)
- Re: Exploit for DNS Cache Poisoning - RELEASED Ganbold Tsagaankhuu (Jul 24)
- Re: Exploit for DNS Cache Poisoning - RELEASED Tuc at T-B-O-H.NET (Jul 24)
- Re: Exploit for DNS Cache Poisoning - RELEASED Tuc at T-B-O-H.NET (Jul 23)
- Re: Exploit for DNS Cache Poisoning - RELEASED Paul Ferguson (Jul 23)
- Re: Exploit for DNS Cache Poisoning - RELEASED Sean Donelan (Jul 23)
- TLD servers with recursion was Re: Exploit for DNS Cache Poisoning - RELEASED Simon Waters (Jul 24)
- Re: TLD servers with recursion was Re: Exploit for DNS Cache Poisoning - RELEASED John Kristoff (Jul 24)
- Re: TLD servers with recursion was Re: Exploit for DNS Cache Poisoning - RELEASED Gadi Evron (Jul 24)
- Re: TLD servers with recursion was Re: Exploit for DNS Cache Poisoning - RELEASED Gadi Evron (Jul 24)
- RE: TLD servers with recursion was Re: Exploit for DNS Cache Poisoning- RELEASED Martin Hannigan (Jul 24)
- RE: TLD servers with recursion was Re: Exploit for DNS Cache Poisoning- RELEASED Gadi Evron (Jul 24)
- RE: TLD servers with recursion was Re: Exploit for DNS CachePoisoning- RELEASED Martin Hannigan (Jul 24)
- Re: TLD servers with recursion was Re: Exploit for DNS Cache Poisoning- RELEASED Steve Bertrand (Jul 27)
- Re: TLD servers with recursion was Re: Exploit for DNS Cache Poisoning- RELEASED Gadi Evron (Jul 24)
- Re: TLD servers with recursion was Re: Exploit for DNS Cache Poisoning- RELEASED Steven M. Bellovin (Jul 24)
- Re: TLD servers with recursion was Re: Exploit for DNS Cache Poisoning - Paul Vixie (Jul 24)
- Re: Exploit for DNS Cache Poisoning - RELEASED Jorge Amodio (Jul 24)