[tor-bugs] #16430 [Tor]: tor relay rejecting DNS names containing underscore

Tue Jun 23 20:56:52 UTC 2015

#16430: tor relay rejecting DNS names containing underscore
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 Reporter:  starlight  |          Owner:
     Type:  defect     |         Status:  new
 Priority:  normal     |      Milestone:
Component:  Tor        |        Version:  Tor: 0.2.6.9
 Keywords:             |  Actual Points:
Parent ID:             |         Points:
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 It appears the prohibition against
 use of underscore characters in
 DNS names is canonical rather than
 a hard rule enforced by the DNS
 system.  The below DNS names are
 rejected by tor though they
 resolve properly.

 Seems likely DNS handling should be
 revised to allow it.

 {{{
 Your application (using socks5 to port 80) gave Tor a malformed hostname:
 "core3_euw1.fabrik.nytimes.com.". Rejecting the connection.
 Your application (using socks5 to port 80) gave Tor a malformed hostname:
 "core1_euw1.fabrik.nytimes.com.". Rejecting the connection.
 Your application (using socks5 to port 80) gave Tor a malformed hostname:
 "core4_euw1.fabrik.nytimes.com.". Rejecting the connection.
 Your application (using socks5 to port 80) gave Tor a malformed hostname:
 "core15_euw1.fabrik.nytimes.com.". Rejecting the connection.
 Your application (using socks5 to port 80) gave Tor a malformed hostname:
 "core15_euw1.fabrik.nytimes.com.". Rejecting the connection.
 Your application (using socks5 to port 80) gave Tor a malformed hostname:
 "core13_euw1.fabrik.nytimes.com.". Rejecting the connection.
 Your application (using socks5 to port 80) gave Tor a malformed hostname:
 "core14_euw1.fabrik.nytimes.com.". Rejecting the connection.
 Your application (using socks5 to port 80) gave Tor a malformed hostname:
 "core10_euw1.fabrik.nytimes.com.". Rejecting the connection.
 Your application (using socks5 to port 80) gave Tor a malformed hostname:
 "core14_euw1.fabrik.nytimes.com.". Rejecting the connection.
 Your application (using socks5 to port 80) gave Tor a malformed hostname:
 "core20_euw1.fabrik.nytimes.com.". Rejecting the connection.
 Your application (using socks5 to port 80) gave Tor a malformed hostname:
 "core20_euw1.fabrik.nytimes.com.". Rejecting the connection.
 Your application (using socks5 to port 80) gave Tor a malformed hostname:
 "core10_euw1.fabrik.nytimes.com.". Rejecting the connection.
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16430>
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