Re: [tor-bugs] #18080 [Tor Browser]: Do not strip the Access-Control-Allow-Origin header

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#18080: Do not strip the Access-Control-Allow-Origin header
-------------------------+-----------------------------------
 Reporter:  cypherpunks  |          Owner:  tbb-team
     Type:  defect       |         Status:  needs_information
 Priority:  Medium       |      Milestone:
Component:  Tor Browser  |        Version:
 Severity:  Normal       |     Resolution:
 Keywords:               |  Actual Points:
Parent ID:               |         Points:
  Sponsor:               |
-------------------------+-----------------------------------

Comment (by cypherpunks):

 Replying to [comment:1 gk]:
 > Hrm. I tried a bit and looked at our code but did not see anything
 obvious. Steps for reproducing would be really helpful here.

 I cannot reproduce it reliably but it happens sometimes with the following
 steps.

 1. Go to [https://onionoo.torproject.org/summary?limit=1].
 2. Open Firefox Developer Tools.
 3. Go to the Network tab.
 4. Refresh the page with F5.
 5. Look at the response headers of the first (and only) request.
 6. If the Access-Control-Allow-Origin header is '''not''' missing, go to
 step 4.

 After 3-5 refreshes the header disappears. However, it can also reappear
 and disappear again with subsequent refreshes.

 FWIW I'm using Tor Browser 5.0.7.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18080#comment:2>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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