[tor-bugs] #29607 [Core Tor/Tor]: Denial of service on v2 onion service

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed Mar 13 15:47:24 UTC 2019


#29607: Denial of service on v2 onion service
--------------------------+--------------------------
 Reporter:  pidgin        |          Owner:  pidgin
     Type:  defect        |         Status:  accepted
 Priority:  Immediate     |      Milestone:
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:  #25461        |         Points:
 Reviewer:                |        Sponsor:
--------------------------+--------------------------

Comment (by pidgin):

 Replying to [comment:13 teor]:
 > This looks like a duplicate of #25461.
 >
 > We'll need to fix #25461, or confirm that you're not using an affected
 version, before we can isolate this bug,
 >
 > How do you know there is an attacker, rather than just lots of clients
 using your service?

 the attacker contacted us for extortion. The attacker turned the DDOS off
 and on, he informed us about times.
 cpu loads matches times. cpu load is at all instances at 100% at attack.
 if DDOS not taking place, all tor processes are at 10% max (average far
 less)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29607#comment:19>
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