On Wed, Jul 23, 2008 at 9:44 PM, Joe Greco <jgreco@ns.sol.net> wrote:
Except this time your reply comes with an additional record containing the IP for www.gmail.com to the one you want to redirect it to.
Thought that was the normal technique for cache poisoning. I'm pretty sure that at some point, code was added to BIND to actually implement this whole bailiwick system, rather than just accepting arbitrary out- of-scope data, which it ... used to do (sigh, hi BIND4).
Joe, I think that's the beauty of this attack: the data ISN'T out of scope. The resolver is expecting to receive one or more answers to 00001.gmail.com, one or more authority records (gmail.com NS www.gmail.com) and additional records providing addresses for the authority records (www.gmail.com A 127.0.0.1). Regards, Bill Herrin -- William D. Herrin ................ herrin@dirtside.com bill@herrin.us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004