[tor-bugs] #25568 [Core Tor/Tor]: hs: Lookup failure cache when introducing to an intro point

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#25568: hs: Lookup failure cache when introducing to an intro point
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 Reporter:  dgoulet           |          Owner:  dgoulet
     Type:  defect            |         Status:  assigned
 Priority:  Medium            |      Milestone:  Tor: 0.3.4.x-final
Component:  Core Tor/Tor      |        Version:
 Severity:  Normal            |     Resolution:
 Keywords:  security, tor-hs  |  Actual Points:
Parent ID:                    |         Points:
 Reviewer:                    |        Sponsor:
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Comment (by arma):

 Replying to [ticket:25568 dgoulet]:
 > a malicious service would induce many circuits out of the client than
 necessary. This can be used, theoretically, for a client guard discovery
 attack.

 I think the same level of attack could happen just by listing a bunch of
 slightly different unreachable intro points. So I don't think we should
 think of ourselves as fixing a client guard discovery attack at all, when
 we fix this ticket.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25568#comment:3>
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