[tbb-bugs] #22788 [Applications/Tor Browser]: Tor Browser rendering hangs when downloading large PDFs

Tor Bug Tracker & Wiki blackhole at torproject.org
Sat Jul 1 16:10:43 UTC 2017


#22788: Tor Browser rendering hangs when downloading large PDFs
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 Reporter:  teor                      |          Owner:  tbb-team
     Type:  defect                    |         Status:  new
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:                            |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by cypherpunks):

 Isn't this expected since JIT is disabled in those higher security
 settings? Or should there be a whitelist for anything `pdf.js`?

 I agree with you teor, loading PDFs in those security settings can be
 annoyingly slow, especially PDFs containing scans of books. Hopefully with
 [https://trac.torproject.org/projects/tor/ticket/7501#comment:19 FF59esr
 and their switch to Chromium's PDFium we wont get such problems (although
 it's written in C++ = memory unsafe)].

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22788#comment:1>
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