[tor-relays] interesting tor platform string or tor bug?

nusenu nusenu at openmailbox.org
Fri Jul 8 08:30:00 UTC 2016

>> We plan on authorities rejecting descriptors with non-ASCII
>> characters in 0.2.9, if we get it implemented before the code
>> freeze. https://trac.torproject.org/projects/tor/ticket/18938

Glad to hear that.

 > Hmm, I can't find an actual descriptor with these characters in it.
> The latest descriptor I can find for this relay has a normal platform
> line: 
> https://collector.torproject.org/recent/relay-descriptors/server-descriptors/2016-07-06-06-05-14-server-descriptors
>  Could this be a bug in Atlas?

I ruled that out by lookup up the descriptor.
It took me a while to find that descriptor on collector that is why I
linked it in my last email:

>>> descriptor containing that platform string: 
>>> https://collector.torproject.org/recent/relay-descriptors/server-descriptors/2016-07-07-06-05-14-server-descriptors

@type server-descriptor 1.0
router inaTor 9001 0 0
-----BEGIN ED25519 CERT-----
-----END ED25519 CERT-----
master-key-ed25519 XnNN7alOJ9ypwROseiENCy/pCzu7HMh1liZppdbwUuo
platform ¨ÛB`Ÿ
protocols Link 1 2 Circuit 1
published 2016-07-07 05:50:30
fingerprint 21E8 4B29 4794 821E 2898 E8ED 1840 2E45 E4FC 351E
uptime 218
bandwidth 1048576 1048576 52224

note: the timestamps 07-06 vs 07-06 (relevant descriptor never ended up
in a consensus entry, last seen vs. last restarted)

> Actually, I should probably say that there are *other* descriptors
> from inaTor, which say
> """
> platform Tor on Windows 8
> """
> i.e. a totally normal platform string.
> So it looks like a Tor bug -- and a memory corruption one at that.

Yes, both relays on that IP  (same ORPort), changed from "Tor on
Windows 8" to that non-ASCII string (that is why I knew he is probably
running Windows 8).

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