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[tor-bugs] #26339 [Core Tor]: Use same traffic path if destination is the same but the protocol is different.



#26339: Use same traffic path if destination is the same but the protocol is
different.
-----------------------------+--------------------
     Reporter:  cypherpunks  |      Owner:  (none)
         Type:  defect       |     Status:  new
     Priority:  Medium       |  Milestone:
    Component:  Core Tor     |    Version:
     Severity:  Normal       |   Keywords:
Actual Points:               |  Parent ID:
       Points:               |   Reviewer:
-----------------------------+--------------------
 Many people use Tor to proxify their non-Tor software such as Bitcoin,
 BitMessage. And some of them are using SOCKS4.

 torrc:
 DNSPort X
 SocksPort Y

 1. User's software query DNS via DNSPort: www.example.com
 2. Tor will create a path to www.example.com:0 to resolve its IP
 3. Tor return www.example.com is 1.2.3.4
 4. User's software connect to www.example.com via SocksPort, using Socks4.

 Expected:
 In step 4, Tor will use step 2's path to connect www.example.com because
 Tor know www.example.com may be 1.2.3.4.

 Actual:
 In step 4, Tor create a new path to connect to www.example.com, thus
 www.example.com's server admin will see 2 incoming connection;
 1) DNS request from (step2's exit ip)
 2) WWW request from (step4's exit ip)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26339>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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