[tbb-bugs] #26553 [Applications/Tor Browser]: Sign our own extensions in Tor Browser

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu Aug 9 06:35:36 UTC 2018

#26553: Sign our own extensions in Tor Browser
 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:  new
 Priority:  High                                 |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ff60-esr, tbb-security,              |  Actual Points:
  GeorgKoppen201808, TorBrowserTeam201808        |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:

Comment (by intrigeri):

 We at Tails currently patch the add-on signature checking code (on top of
 your current patch that adds a whitelist with `if (aAddon.id == […]` aka.
 0714762d25415271191503903a9f2fb0627ca38d on the tor-
 browser-60.1.0esr-8.0-1 branch) to add uBlock to the list. We've discussed
 this on the https://lists.torproject.org/pipermail/tbb-
 dev/2017-April/000515.html thread, where it seems that we (TBB team +
 Tails) reached a tentative agreement to move the whitelist to a pref. But
 so far we failed to write the corresponding code, sorry! FTR on Tails'
 side this is tracked on https://labs.riseup.net/code/issues/12571.

 It would be extremely helpful if the resolution for this ticket made
 things better for us (e.g. keep that patch and create a pref with the list
 of allowed unsigned add-ons, empty by default for TBB, where we would add
 uBlock) instead of worse. Things would get worse for us if the code that
 adds a whitelist with `if (aAddon.id == […]` was fully removed: then we
 would need to carry it as part of Tails delta, which is quite ugly and

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26553#comment:7>
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