[tor-bugs] #30434 [Obfuscation/Snowflake]: Log sanitization scrubs HH:MM:SS timestamps as if they were IPv6 addresses

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed May 8 16:37:14 UTC 2019


#30434: Log sanitization scrubs HH:MM:SS timestamps as if they were IPv6 addresses
-----------------------------------+------------------------
 Reporter:  dcf                    |          Owner:  (none)
     Type:  defect                 |         Status:  new
 Priority:  Medium                 |      Milestone:
Component:  Obfuscation/Snowflake  |        Version:
 Severity:  Minor                  |     Resolution:
 Keywords:                         |  Actual Points:
Parent ID:                         |         Points:
 Reviewer:                         |        Sponsor:
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Comment (by cohosh):

 Here's a suggested fix:
 https://github.com/cohosh/snowflake/tree/ticket30434

 I went off of [https://tools.ietf.org/html/rfc4291#section-2.2 RFC4291].
 There's no MUST in there, but a "::" indicates a compressed IPv6 address,
 so I added the restriction that if there are more than 2 fields compressed
 it needs "::" somewhere in the address.

 I also added some additional test cases for the timestamps and more
 compressed addresses to make sure we don't miss anything.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30434#comment:1>
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