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Re: [tor-bugs] #27841 [Core Tor/Tor]: Surprise race: Intro point closes circuit after NACK, at the same time as client tries to extend circuit to new intro point
#27841: Surprise race: Intro point closes circuit after NACK, at the same time as
client tries to extend circuit to new intro point
-------------------------------------------------+-------------------------
Reporter: asn | Owner: neel
Type: defect | Status: closed
Priority: Medium | Milestone: Tor:
| 0.3.5.x-final
Component: Core Tor/Tor | Version:
Severity: Normal | Resolution: fixed
Keywords: tor-hs dos 035-backport | Actual Points:
040-backport 041-backport |
Parent ID: | Points:
Reviewer: dgoulet | Sponsor:
| Sponsor27
-------------------------------------------------+-------------------------
Comment (by teor):
Replying to [comment:32 dgoulet]:
> Replying to [comment:31 nickm]:
> > Is there a flag we can stop giving them?
>
> We would need to remove HSIntro=4 basically from the 032, 033 and 034
relays so the service will go in legacy mode and this bug is not in the
legacy code.
We could make working versions declare a new HSIntro version, and then
make clients require that version.
When we fix high-impact bugs in future, we should consider adding a new
protocol version, and making clients require it. That's what protocol
versions are for,
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27841#comment:35>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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