[tor-bugs] #16276 [Onionoo]: bug in onionoo's family set detection

[Tor Bug Tracker & Wiki]

#16276: bug in onionoo's family set detection
-----------------------------+-----------------
     Reporter:  cypherpunks  |      Owner:
         Type:  defect       |     Status:  new
     Priority:  major        |  Milestone:
    Component:  Onionoo      |    Version:
   Resolution:               |   Keywords:
Actual Points:               |  Parent ID:
       Points:               |
-----------------------------+-----------------

Comment (by tyseom):

 here is [2]'s relay descriptor family line from
 https://collector.torproject.org/recent/relay-descriptors/server-
 descriptors/2015-06-04-16-05-52-server-descriptors
 proving that it does NOT list [1] as a member:
 {{{
 family $0E3DE4D738C91A8BB56432EF2DA7C28D4108F4A2
 $169019BFFECBBB9A35878BCF4C7AE1FF37AD8452
 $231C2B9C8C31C295C472D031E06964834B745996
 $29FA22A7AEE4D8AAEA5BF9271834642EEDA849D7
 $3EE7D6BEAE015552C05E6AA40EBBCC69B251EC23
 $4C7AA094EF5072F08C89A72353227FACBE58092F
 $4C7BF55B1BFF47993DFF995A2926C89C81E4F04A
 $530E1038C3D2F746657B51F97831F9F422747180
 $552996B383110A00DE456E010E3E74A4E54E54B0
 $580A91DAE04CD402AE70E85E01C3B1FD5BE5136E
 $5CC55AF14792CE805CA486A2CA1EC25A4016474A
 $6A97482F1B228AF847A8FE83C75F68902C2DCA4D
 $6B7191639E179965FD694612C9B2C8FB4267B27D
 $7589D87E6669A04EE9EA081342006E2E5571AD43
 $79D6A70B5E42DB93563074E8A385EDDB46FBB6DA
 $8B3D6AB6A692C8C92AC33E47C6F75C593F5AAF42
 $91D23D8A539B83D2FB56AA67ECD4D75CC093AC55
 $935BABE2564F82016C19AEF63C0C40B5753BA3D2
 $93E8D956042F1C3572EFF87313F4794910584D3C
 $9643FE742A609FBE332E4D512A88DECF2E5207C2
 $A37C47B03FF31CA6937D3D68366B157997FE7BCD
 $A55D07F6D78CE790E7D75DE665DF8365866BA870
 $A703C8DB0466AB16375403D798005F568372E2D8
 $A705EFD586626F690A71A215E6233D7E8581C374
 $A99ED2CC51850744D8CFF194CF6B06900B8B13AD
 $BD5899EA64D83F7E885B2495DE0842F1A77E99AF
 $C9933B3725239B6FAB5227BA33B30BE7B48BB485
 $CEDD9C7C371E753CDD14D292BCE1C7B8F4734D25
 $E26AFC5F718E21AC502899B20C653AEFF688B0D2
 $ECC17C0BA74113FB7A4F58DAF2FF1EE23CE5DF06
 $FB40DC3C724E5AA6ECD3EA1F64C0F559B48F21B5
 $FC37A7B1C264497BA01A08BF6D2C982A99D5B963
 }}}


 If you own two relays you can easily reproduce/cause this bug in onionoo
 by following these steps:

 1) configure a mutual family between two relays [A] <> [B]
 2) publish the descriptor to dir auths
 3) wait for a bit (days)
 4) remove the family config line on [B] + publish new descriptors
 5) onionoo will still show the family on [A] (but removes it correctly
 from [B])

 so apparently it doesn't verify the reverse path [A] < [B] again once it
 has been established once.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16276#comment:3>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online