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Re: [tor-bugs] #10631 [Firefox Patch Issues]: LinkedIn page freezes Tor Browser

#10631: LinkedIn page freezes Tor Browser
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     Reporter:  bernie.allen          |      Owner:
         Type:  defect                |     Status:  reopened
     Priority:  normal                |  Milestone:
    Component:  Firefox Patch Issues  |    Version:
   Resolution:                        |   Keywords:
Actual Points:                        |  Parent ID:
       Points:                        |
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Comment (by cypherpunks):

 Two good news:
 1. Firefox 24.6.0 ESR do the same freeze with disabled
 dom.enable_performance. The same cycles freeze, short unfreeze, long
 freeze
 2. Firefox 30 does freeze too if disabled dom.enable_performance, and yet
 showing message box that welcomes to interrupt busy script. Latest Firefox
 detects problem with that script.

 Conclusion: It's not Torbrowser specific issue, but bug triggered for
 vanilla Firefox too if dom.enable_performance is false.

 Two bad news:
 1. It's unlikely to get backport for that special unresponsive script
 detector for such special boomerang script.
 2. Those detector only detects but message box hangs along with main
 window, you can't stop those script (at least it was impossible to do
 during my tests)

 Conclusion: It's trap. You can't to enable dom.enable_performance for
 privacy reasons. And you can't to leave such great DoS vector alone.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/10631#comment:21>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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