[tor-bugs] #10365 [Tor]: Disallow odd-length VERSIONS cells

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#10365: Disallow odd-length VERSIONS cells
-----------------------+------------------------------------
 Reporter:  nickm      |          Owner:
     Type:  defect     |         Status:  new
 Priority:  normal     |      Milestone:  Tor: 0.2.5.x-final
Component:  Tor        |        Version:
 Keywords:  tor-relay  |  Actual Points:
Parent ID:             |         Points:
-----------------------+------------------------------------
 Right now, if we receive an odd-length VERSION cell, we ignore the final
 byte. That's not documented in our spec, though, and doesn't seem to be
 actually good for anything.

 We could just reject all such cells without breaking any current correct
 Tor server or client, and we probably should.  Reported by bobnomnom.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/10365>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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