full-disclosure - Re: Verizon Wireless DNS Tunneling

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Message-ID: <CAEW7ACn5bfQ_OpR3QdpyCtaeMo20K3_5oVobfO9jBDjFFoDxsA@mail.gmail.com>
Date: Fri, 7 Oct 2011 07:05:54 -0700
From: Dan Kaminsky <dan@...para.com>
To: Marshall Whittaker <marshallwhittaker@...il.com>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Verizon Wireless DNS Tunneling

One major reason it sticks around is -- what are you supposed to do, return
bad data until the user is properly logged in?  It might get cached -- and
while operating systems respect TTL, browsers most assuredly do not ("well,
it MIGHT take us somewhere good").

It's not like there's a magic off switch that makes this go away.

On Fri, Oct 7, 2011 at 4:56 AM, Marshall Whittaker <
marshallwhittaker@...il.com> wrote:

> Yes, I've found that DNS tunneling works well at the college I go to on
> their WIFI.  I've never gotten ICMP tunneling to work myself (outside of a
> virtual machine),  but I have some code laying around somewhere that can do
> it just in case I need it for something sometime.  Just thought it would be
> interesting to some people that it works on such a large provider as
> Verizon.  The only problem with it that I see is that it's quite slow.  But
> if it works, so be it.  Good for checking email and browsing the web and
> such on the road.  But I wouldn't try to torrent a linux distro with it,
> haha.
>
> --oxagast
>
> On Fri, Oct 7, 2011 at 7:39 AM, BH <lists@...ckhat.bz> wrote:
>
>>  This comes in handy when travelling, I also found a few places where ICMP
>> tunnelling works well.
>>
>>
>> On 7/10/2011 6:35 PM, Dan Kaminsky wrote:
>>
>> Works mostly everywhere.  It's apparently enough of a pain in the butt to
>> deal with, and abused so infrequently, that it's left alone.
>>
>> On Fri, Oct 7, 2011 at 3:32 AM, Marshall Whittaker <
>> marshallwhittaker@...il.com> wrote:
>>
>>> I recently noticed that you can tunnel TCP through DNS (I used iodine) to
>>> penetrate Verizon Wireless' firewall.  You can connect, and if you can hold
>>> the connection long enough to make a DNS tunnel, then the connection stays
>>> up, then use SSH -D to create a proxy server for your traffic. Bottom line
>>> is, you can use the internet without paying. I made a video of it.  It can
>>> be seen here:
>>> http://www.youtube.com/user/Oxagast?blend=2&ob=5#p/u/0/X6oWESQMVd8 I
>>> tried to contact Verizon on their security blog about it a few weeks ago at
>>> http://securityblog.verizonbusiness.com/ however, I have not had a
>>> response.  This technique still works as of this posting.  Maybe this will
>>> help them get their act together ;-)
>>>
>>>  --oxagast
>>>
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>>
>>
>>
>> _______________________________________________
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>>
>>
>> _______________________________________________
>> Full-Disclosure - We believe in it.
>> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
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>
>
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
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