[tbb-bugs] #18592 [Tor Browser]: pdfjs breaks when javascript disabled

Tor Bug Tracker & Wiki blackhole at torproject.org
Sun Mar 20 16:31:56 UTC 2016

#18592: pdfjs breaks when javascript disabled
     Reporter:  cypherpunks  |      Owner:  tbb-team
         Type:  defect       |     Status:  new
     Priority:  Medium       |  Milestone:
    Component:  Tor Browser  |    Version:
     Severity:  Normal       |   Keywords:
Actual Points:               |  Parent ID:
       Points:               |   Reviewer:
      Sponsor:               |
 I'm using hardened tor browser 6.0a4 in high security mode with noscript
 disabled and javascript.enabled=false (noscript somehow breaks sites in
 ways that disabling javascript doesn't; I haven't figured it out yet or
 found a good testcase).

 When I navigate to a pdf, e.g.
 https://upload.wikimedia.org/wikipedia/commons/d/d3/Test.pdf I get a blank
 pdfjs viewer. It seems disabling javascript breaks the viewer, which is
 silly: most of firefox is written in JS and it doesn't stop working.
 pdfjs, as a built-in component, shouldn't either. But of course it
 shouldn't execute any JS found in the pdf file (I don't know whether it
 will by default).

 Workaround is to set pdfjs.disabled=true and download them. But I'd rather
 have a built-in viewer.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18592>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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