[tor-bugs] #18545 [Applications/Tor Browser]: Review Firefox Developer Docs and Undocumented bugs since FF38esr

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Mon May 9 13:33:33 UTC 2016

#18545: Review Firefox Developer Docs and Undocumented bugs since FF38esr
 Reporter:  gk                              |          Owner:  tbb-team
     Type:  task                            |         Status:  new
 Priority:  Very High                       |      Milestone:
Component:  Applications/Tor Browser        |        Version:
 Severity:  Critical                        |     Resolution:
 Keywords:  ff45-esr, TorBrowserTeam201605  |  Actual Points:
Parent ID:                                  |         Points:
 Reviewer:                                  |        Sponsor:  SponsorU

Comment (by gk):

 Replying to [comment:23 mcs]:
 > Replying to [comment:21 gk]:
 > > Replying to [comment:20 brade]:
 > > > Kathy and I reviewed all of the release notes and developer docs for
 Firefox 39-45. We have not yet looked at the complete bug lists
 > >
 > > That's fine. I am halfway through and think having just one doing that
 is okay.
 > >
 > > > Here are some things that might be worth another look (some of these
 may have been looked at in more detail by gk already):
 > >
 > > Thanks for looking at it!
 > >
 > > > CacheStorage. It seems that this can be used by Web Workers and
 regular JS code (not just by Service Workers).
 > > > https://developer.mozilla.org/en-US/docs/Web/API/CacheStorage
 > >
 > > Do you have a bug indicating that? CacheStorage is part of the Service
 Workers spec and that whole MDN page indicates that, too.
 > The API page includes "It provides a master directory of all the named
 caches that a ServiceWorker, other type of worker or window scope can
 access (you don't have to use it with service workers, even though that is
 the spec that defines it) and maintains a mapping of string names to
 corresponding Cache objects." Also, some of the top-level objects are
 present in regular DOM windows. See:

 Thanks. Filed as #18995.

 > > > Server logging. This is kind of a strange feature: server
 applications can return an X- HTTP header to cause items to be logged to
 the developer console. Maybe it is only done when the console is open and
 the user is monitoring network requests (I am not sure). Kathy and I do
 not like the idea that this is enabled, but it may be harmless.
 > > > https://developer.mozilla.org/en-
 > >
 > > Hm. This is https://bugzilla.mozilla.org/show_bug.cgi?id=1168872. So
 what if we put that feature behind a pref? Disabling it by default in Tor
 > Kathy and I think adding a pref is a good idea, although we leave the
 decision to you (we cannot prove that this will cause any security or
 privacy issues).

 Filed the investigation as #18996.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18545#comment:24>
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