Re: [tor-bugs] #26166 [Core Tor/Tor]: Protect directory servers and torproject.org against TCP reset attacks

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

#26166: Protect directory servers and torproject.org against TCP reset attacks
-----------------------------+-------------------------
 Reporter:  indigotime       |          Owner:  (none)
     Type:  enhancement      |         Status:  closed
 Priority:  Medium           |      Milestone:
Component:  Core Tor/Tor     |        Version:
 Severity:  Major            |     Resolution:  invalid
 Keywords:  TCP, RST, reset  |  Actual Points:
Parent ID:                   |         Points:
 Reviewer:                   |        Sponsor:
-----------------------------+-------------------------
Changes (by teor):

 * status:  new => closed
 * resolution:   => invalid
 * component:  - Select a component => Core Tor/Tor


Comment:

 It is difficult to distinguish spoofed RST packets from actual RST
 packets. A network-level adversary can generate packets that look like
 they came from the user's computer.

 We certainly can't do it at the application level in Tor. (And it would be
 really hard to do in a cross-platform way.)

 For machines we control on torproject.org, I believe the situation is
 similar.

 If you find documentation for a reliable method of distinguishing spoofed
 packets, please post a link here, and reopen the ticket.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26166#comment:1>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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