[tor-bugs] #30387 [Core Tor/Tor]: open 20 onion bookmarks in tabs. tails, tor browser, onion circuits

[Tor Bug Tracker & Wiki]

#30387: open 20 onion bookmarks in tabs. tails, tor browser, onion circuits
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 Reporter:  anon52569                    |          Owner:  (none)
     Type:  defect                       |         Status:  new
 Priority:  Medium                       |      Component:  Core Tor/Tor
  Version:  Tor: 0.3.5.8                 |       Severity:  Normal
 Keywords:  ddos tails open-all-in-tabs  |  Actual Points:
Parent ID:                               |         Points:
 Reviewer:                               |        Sponsor:
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 An onion site under DDOS published 20 onion links. After trying them
 manually for a while, I put them all into a bookmark folder and selected
 open all in bookmarks, hoping to find one that would connect. This did
 work on occasion. Watching onion circuits showed unexpected behavior.  A
 large number of circuits were being opened. Some showed four links.
 clicking on 4 link circuit almost always caused it to disappear. The guard
 node switched to a new one on new circuits after a while. After this, all
 onion sites became unreachable, with many circuits opening and failing
 when trying a single not overloaded site. Restarting tails was required to
 reach regular onion sites.

 I didn't intend to DOS the network myself, but it looks like that was the
 result. Perhaps this should be rate limited at the source.

 Also, if I hadn't had onion circuits window open, I wouldn't have realized
 that something was wrong in my tor client. Some of the reported
 unavailable sites could be due to the user's tor client in a similar
 state.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30387>
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