On 8 Jul 2016, at 09:48, Tim Wilson-Brown - teor teor2345@gmail.com wrote:

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On 8 Jul 2016, at 09:41, nusenu nusenu@openmailbox.org wrote:

Hi Seongmin,

out of curiosity I was wondering whether your so called tor "platform" string ("??B`?\u0001") or your tor relay [1] was generated by a modified tor installation on Windows 8 or if we are looking at some bug in vanilla tor?

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

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...

Could this be a bug in Atlas?

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thanks!

[1] https://atlas.torproject.org/#details/21E84B294794821E2898E8ED18402E45E4FC35...

descriptor containing that platform string: https://collector.torproject.org/recent/relay-descriptors/server-descriptors...

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Tim Wilson-Brown (teor)

teor2345 at gmail dot com PGP C855 6CED 5D90 A0C5 29F6 4D43 450C BA7F 968F 094B ricochet:ekmygaiu4rzgsk6n

Tim Wilson-Brown (teor)

teor2345 at gmail dot com PGP C855 6CED 5D90 A0C5 29F6 4D43 450C BA7F 968F 094B ricochet:ekmygaiu4rzgsk6n

On Thu, Jul 07, 2016 at 08:14:45PM -0400, Roger Dingledine wrote:

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Could this be a bug in Atlas?

Not a bug in atlas -- I see an actual descriptor in moria1's cache from inaTor which has these funny symbols in its platform string.

Actually, I should probably say that there are *other* descriptors from inaTor, which say """ platform Tor 0.2.7.6 on Windows 8 """ i.e. a totally normal platform string.

So it looks like a Tor bug -- and a memory corruption one at that.

--Roger

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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...

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:

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descriptor containing that platform string: https://collector.torproject.org/recent/relay-descriptors/server-descriptors...

@type server-descriptor 1.0 router inaTor 143.248.56.14 9001 0 0 identity-ed25519 -----BEGIN ED25519 CERT----- AQQABjt2AV0rPf8QKymuUxOZk47xwv+Kw4jsZfj1Uf9wcObZInKOAQAgBABec03t qU4n3KnBE6x6IQ0LL+kLO7scyHWWJmml1vBS6mh/swglXcnfoBkMN3hYTOrzRLwV uVuaDR9zGlKIN66tZVSUjdac5tSa2YUUn2bKibLEjyVPeWXe7kMBSPmeVAs= -----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 0.2.7.6 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 0.2.7.6 on Windows 8" to that non-ASCII string (that is why I knew he is probably running Windows 8).

Tim Wilson-Brown - teor:

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

I created a related onionoo feature request https://trac.torproject.org/projects/tor/ticket/19650