[tor-bugs] #26624 [Applications/Tor Browser]: NoScript blocks <OBJECT> on Standard-Safer security setting in 8.0a9 contrary to behavior in 8.0a8

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed Sep 12 06:23:05 UTC 2018


#26624: NoScript blocks <OBJECT> on Standard-Safer security setting in 8.0a9
contrary to behavior in 8.0a8
-------------------------------------------------+-------------------------
 Reporter:  cypherpunks                          |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-security-slider, noscript,       |  Actual Points:
  tbb-8.0-issues, tbb-regression,                |
  tbb-8.0.1-can, GeorgKoppen201809,              |
  TorBrowserTeam201809R                          |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------
Changes (by gk):

 * cc: arthuredelstein (added)
 * status:  new => needs_review
 * keywords:
     tbb-security-slider, noscript, tbb-8.0-issues, tbb-regression,
     tbb-8.0.1-can, GeorgKoppen201809
     =>
     tbb-security-slider, noscript, tbb-8.0-issues, tbb-regression,
     tbb-8.0.1-can, GeorgKoppen201809, TorBrowserTeam201809R


Comment:

 See `bug_26624`
 (https://gitweb.torproject.org/user/gk/torbutton.git/commit/?h=bug_26624&id=8418acef23573dcd63a4bc2e04fac22bda7a25ba)
 in my public Torbutton repo for a fix for review.

 I think it is okay to allow OBJECT for http:// on the safer level as well
 as there is a special permission `fetch` which is used for
 `object_subrequest` and which is not enabled for http:// on the safer
 level. Thus, it should prevent loading scripts from http:// sources behind
 OBJECT elements.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26624#comment:7>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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