[tor-bugs] #31548 [Core Tor/Tor]: hs-v3: Service can pick more than HiddenServiceNumIntroductionPoints intro points

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#31548: hs-v3: Service can pick more than HiddenServiceNumIntroductionPoints intro
points
-------------------------------------------------+-------------------------
 Reporter:  dgoulet                              |          Owner:  (none)
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.4.2.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-hs service hs-v3 035-backport    |  Actual Points:
  040-backport 041-backport                      |
Parent ID:  #29995                               |         Points:  0.2
 Reviewer:  asn                                  |        Sponsor:
                                                 |  Sponsor27-must
-------------------------------------------------+-------------------------
Changes (by dgoulet):

 * status:  new => needs_review
 * reviewer:   => asn
 * points:   => 0.2
 * cc: asn (removed)
 * keywords:  tor-hs service hs-v3 => tor-hs service hs-v3 035-backport
     040-backport 041-backport


Comment:

 I recommend backport up to 035. This is major bugfix in my opinion
 affecting HS reachability quite a bit. This fix also mitigates #31561 that
 makes a service possibly put in the descriptor intro points for which it
 has *no* circuits, never.

 Following is based on maint-0.3.5:

 PR: https://github.com/torproject/tor/pull/1274
 Branch: `ticket31548_035_01`

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31548#comment:1>
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