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[tor-bugs] #17037 [Tor]: Strange errors. Seems like new type of attack to hidden service.

Subject: [tor-bugs] #17037 [Tor]: Strange errors. Seems like new type of attack to hidden service.
From: "Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>
Date: Fri, 11 Sep 2015 00:50:17 -0000
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#17037: Strange errors. Seems like new type of attack to hidden service.
----------------------+------------------------------------
 Reporter:  alberto   |          Owner:
     Type:  defect    |         Status:  new
 Priority:  critical  |      Milestone:
Component:  Tor       |        Version:  Tor: 0.2.7.2-alpha
 Keywords:            |  Actual Points:
Parent ID:            |         Points:
----------------------+------------------------------------
 After few time- Hidden Service unavailable.
 In tor logs- very many records like(every type of records count- 20-30 in
 one second):
 --------------------
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 Sep 11 02:14:15.000 [warn] Couldn't relaunch rendezvous circuit to
 '[scrubbed]'.
 -------------------
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 Sep 11 02:14:15.000 [warn] Giving up launching first hop of circuit to
 rendezvous point [scrubbed] for service <NAME_HIDDEN_SERVICE>
 ------------------------
 Sep 11 02:21:27.000 [warn] connection_edge_process_relay_cell (at origin)
 failed.
 Sep 11 02:21:27.000 [warn] connection_edge_process_relay_cell (at origin)
 failed.
 Sep 11 02:21:27.000 [warn] connection_edge_process_relay_cell (at origin)
 failed.
 Sep 11 02:21:27.000 [warn] connection_edge_process_relay_cell (at origin)
 failed.
 Sep 11 02:21:27.000 [warn] connection_edge_process_relay_cell (at origin)
 failed.
 Sep 11 02:21:27.000 [warn] connection_edge_process_relay_cell (at origin)
 failed.
 Sep 11 02:21:27.000 [warn] connection_edge_process_relay_cell (at origin)
 failed.
 Sep 11 02:21:27.000 [warn] connection_edge_process_relay_cell (at origin)
 failed.
 Sep 11 02:21:27.000 [warn] connection_edge_process_relay_cell (at origin)
 failed.
 Sep 11 02:21:27.000 [warn] connection_edge_process_relay_cell (at origin)
 failed.
 Sep 11 02:21:27.000 [warn] connection_edge_process_relay_cell (at origin)
 failed.
 Sep 11 02:21:27.000 [warn] connection_edge_process_relay_cell (at origin)
 failed.
 Sep 11 02:21:27.000 [warn] connection_edge_process_relay_cell (at origin)
 failed.
 Sep 11 02:21:27.000 [warn] connection_edge_process_relay_cell (at origin)
 failed.
 Sep 11 02:21:27.000 [warn] connection_edge_process_relay_cell (at origin)
 failed.
 -----------------------
 Sep 11 01:51:17.000 [warn] rend_service_receive_introduction(): Bug:
 Internal error: Got an INTRODUCE2 cell on an intro circ (for service
 "<HIDDEN_SERVICE_NAME>")
 with no corresponding rend_intro_point_t. (on Tor 0.2.7.2-alpha-dev
 fa89eb60e952b964)
 Sep 11 01:51:17.000 [warn] rend_service_receive_introduction(): Bug:
 Internal error: Got an INTRODUCE2 cell on an intro circ (for service
 "<HIDDEN_SERVICE_NAME>")
 with no corresponding rend_intro_point_t. (on Tor 0.2.7.2-alpha-dev
 fa89eb60e952b964)
 Sep 11 01:51:17.000 [warn] rend_service_receive_introduction(): Bug:
 Internal error: Got an INTRODUCE2 cell on an intro circ (for service
 "<HIDDEN_SERVICE_NAME>")
 with no corresponding rend_intro_point_t. (on Tor 0.2.7.2-alpha-dev
 fa89eb60e952b964)
 Sep 11 01:51:17.000 [warn] rend_service_receive_introduction(): Bug:
 Internal error: Got an INTRODUCE2 cell on an intro circ (for service
 "<HIDDEN_SERVICE_NAME>")
 with no corresponding rend_intro_point_t. (on Tor 0.2.7.2-alpha-dev
 fa89eb60e952b964)
 Sep 11 01:51:17.000 [warn] rend_service_receive_introduction(): Bug:
 Internal error: Got an INTRODUCE2 cell on an intro circ (for service
 "<HIDDEN_SERVICE_NAME>")
 with no corresponding rend_intro_point_t. (on Tor 0.2.7.2-alpha-dev
 fa89eb60e952b964)
 ------------------

 After restart TOR - many restarting problems (But no problems with
 network, and early- never see errors like this)
 --------
 Sep 11 00:44:32.000 [notice] Bootstrapped 0%: Starting
 Sep 11 00:44:33.000 [notice] Bootstrapped 80%: Connecting to the Tor
 network
 Sep 11 00:44:33.000 [notice] Bootstrapped 85%: Finishing handshake with
 first hop
 Sep 11 00:44:56.000 [warn] Problem bootstrapping. Stuck at 85%: Finishing
 handshake with first hop. (DONE; DONE; count 10; recommendation warn; host
 35E85BAE6
 4BBFE1C921A3167644D8FB7E766FC25 at 85.114.132.36:9001)
 Sep 11 00:44:56.000 [warn] 13 connections have failed:
 Sep 11 00:44:56.000 [warn]  5 connections died in state handshaking (TLS)
 with SSL state SSLv3 read finished A in HANDSHAKE
 Sep 11 00:44:56.000 [warn]  5 connections died in state handshaking (TLS)
 with SSL state SSLv2/v3 read server hello A in HANDSHAKE
 Sep 11 00:44:56.000 [warn]  3 connections died in state connect()ing with
 SSL state (No SSL object)
 -----------------

 Too in logs many 'retrying new circuit' records.
 ------------------
 Sep 11 00:57:46.000 [notice] We tried for 15 seconds to connect to
 '[scrubbed]' using exit
 $60683F31D32D1BAC2FA10770CFBCE2A16E6467FF~31173torproxy03 at 185.65
 .135.228. Retrying on a new circuit.
 Sep 11 00:57:46.000 [notice] We tried for 15 seconds to connect to
 '[scrubbed]' using exit
 $60683F31D32D1BAC2FA10770CFBCE2A16E6467FF~31173torproxy03 at 185.65
 .135.228. Retrying on a new circuit.
 Sep 11 00:57:47.000 [notice] We tried for 15 seconds to connect to
 '[scrubbed]' using exit
 $60683F31D32D1BAC2FA10770CFBCE2A16E6467FF~31173torproxy03 at 185.65
 .135.228. Retrying on a new circuit.
 ------------------

 Can't make debug logs, 'cause attack start at random time, and if wait
 this- size of debug log file- very big(don't have terabytes of disk
 spaces)

 Problem exist at 0.2.7.2-alpha, too exist at 0.2.6 branches.

 If move hidden service to another server and OS(and another hosting
 company)- problem absolutely same.
 Hidden service work, after few time - 10-20-30-60 minutes- many records in
 logs like I write earlier at top of ticket. Hidden service not available.
 TOR process give near 10% of CPU (in normal work - 2-3%)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17037>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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  - From: Tor Bug Tracker & Wiki
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