[tor-bugs] #20601 [Core Tor/Tor]: Clients should reject outdated consensuses as soon as they parse them

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#20601: Clients should reject outdated consensuses as soon as they parse them
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 Reporter:  teor          |          Owner:
     Type:  defect        |         Status:  new
 Priority:  Medium        |      Milestone:  Tor: 0.3.0.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  easy          |  Actual Points:
Parent ID:                |         Points:  0.5
 Reviewer:                |        Sponsor:
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Comment (by teor):

 When delivering a consensus over the control port, Tor will provide the
 cached consensus, no matter how old it is. This is a problem when combined
 with #20667, which stops clients downloading a full consensus in 0.3.0.

 It affects at least the bandwidth authorities (#20621), and probably every
 other client that expects FetchUselessDescriptors to deliver a full
 consensus.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20601#comment:1>
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