[tor-bugs] #30620 [Core Tor/Tor]: HS DDos on circuits? Can't have access to my hidden service

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#30620: HS DDos on circuits? Can't have access to my hidden service
----------------------------------------+------------------------------
 Reporter:  HSdir123                    |          Owner:  (none)
     Type:  defect                      |         Status:  new
 Priority:  Immediate                   |      Component:  Core Tor/Tor
  Version:  Tor: 0.4.1.1-alpha          |       Severity:  Blocker
 Keywords:  DDos, circuits, tor, nodes  |  Actual Points:
Parent ID:                              |         Points:
 Reviewer:                              |        Sponsor:
----------------------------------------+------------------------------
 I do run a HS and i am getting attacked by a ddos. It was on layer7, then
 tcp, and now i think it's currently going in tor.

 Tor debugs is been like 3MB weight in less than one second, with that
 query spammed:

 circuit_build_times_add_time(): Adding circuit build time (random value)

 3MB of that.


 If i manage to start tor service i get:

 May 25 21:21:19.000 [warn] Possible replay detected! An INTRODUCE2 cell
 with thesame ENCRYPTED section was seen 2 seconds ago. Dropping cell.
 May 25 21:21:20.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 126 buildtimes.
 May 25 21:21:41.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 1000 buildtimes.
 May 25 21:22:06.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 1000 buildtimes.
 May 25 21:22:33.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 1000 buildtimes.
 May 25 21:23:33.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 1000 buildtimes.
 May 25 21:23:46.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 368 buildtimes.
 May 25 21:24:30.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 1000 buildtimes.
 May 25 21:24:37.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 261 buildtimes.
 May 25 21:24:45.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 296 buildtimes.
 May 25 21:24:49.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 152 buildtimes.
 May 25 21:25:17.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 942 buildtimes.
 May 25 21:25:22.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 117 buildtimes.
 May 25 21:25:29.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 132 buildtimes.
 May 25 21:25:34.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 161 buildtimes.
 May 25 21:25:40.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 118 buildtimes.
 May 25 21:25:45.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 117 buildtimes.
 May 25 21:25:50.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 149 buildtimes.
 May 25 21:26:05.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 613 buildtimes.
 May 25 21:26:12.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 205 buildtimes.
 May 25 21:26:17.000 [notice] Your network connection speed appears to have
 changed. Resetting timeout to 60s after 18 timeouts and 117 buildtimes.




 Things like that all the time.


 How to get around that?

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30620>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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