[tor-bugs] #21507 [Core Tor/Tor]: Reject Tor versions that contain non-numeric prefixes

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#21507: Reject Tor versions that contain non-numeric prefixes
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 Reporter:  teor                        |          Owner:
     Type:  defect                      |         Status:  merge_ready
 Priority:  Medium                      |      Milestone:  Tor:
                                        |  0.3.1.x-final
Component:  Core Tor/Tor                |        Version:
 Severity:  Normal                      |     Resolution:
 Keywords:  029-backport, 030-backport  |  Actual Points:  0.3
Parent ID:                              |         Points:  0.2
 Reviewer:                              |        Sponsor:
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Comment (by dgoulet):

 Replying to [comment:5 teor]:
 > Replying to [comment:4 dgoulet]:
 > > Branch lgtm;
 > >
 > > Actually now that master has become 031, I believe we should put this
 in 031 and then consider it for backport else it will get somehow
 forgotten in 029... I'm not entirely sure if this fix qualifies for a
 stable backport. If we think 029 is a valid backport
 >
 > 0.2.9 is a valid backport so that authorities can filter badly formatted
 versions from the network. The reasons are the same as those for #21450
 and the authority parts of #21278.

 Ok agree. We expect dir auth to be either on the latest stable or one
 before and in this case 029 (and very soon 030).

 >
 > > then 025 should also be considered (LTS) but I'm not convinced of
 that.
 >
 > No authorities run any version earlier than 0.2.9.

 Indeed.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21507#comment:6>
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