[tbb-bugs] #21559 [Applications/Tor Browser]: Tor browser deanonymization/fingerprinting via cached intermediate CAs

[Tor Bug Tracker & Wiki]

#21559: Tor browser deanonymization/fingerprinting via cached intermediate CAs
-------------------------------------------------+-------------------------
 Reporter:  cypherpunks                          |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:  new
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-fingerprinting, tbb-linkability  |  Actual Points:
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by gk):

 Replying to [comment:4 gk]:
 > FWIW: the Mozilla bug is
 https://bugzilla.mozilla.org/show_bug.cgi?id=1334485. We currently
 mitigate the problem by having the intermediate cache being memory-only
 and cleared during `New Identity`.

 Actually, we still have the
 {{{
 * XXX: intermediate SSL certificates are not cleared.
 }}}
 in Torbutton and it might we worth testing whether that one can go (as I
 assumed) or I misspoke. See #2739 for the `NEWNYM` part.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21559#comment:8>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online