[tbb-bugs] #25770 [Applications/Tor Browser]: Connection established before External App Blocker prompt

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed Apr 11 00:57:18 UTC 2018


#25770: Connection established before External App Blocker prompt
------------------------------------------+----------------------
     Reporter:  sysrqb                    |      Owner:  tbb-team
         Type:  defect                    |     Status:  new
     Priority:  Medium                    |  Milestone:
    Component:  Applications/Tor Browser  |    Version:
     Severity:  Normal                    |   Keywords:
Actual Points:                            |  Parent ID:
       Points:                            |   Reviewer:
      Sponsor:                            |
------------------------------------------+----------------------
 This will likely require a Firefox patch, but it seems like Firefox pre-
 emptively establishes a connection with the server before the user is
 prompted about downloading a file. This isn't obvious.

 In addition to
 [[https://trac.torproject.org/projects/tor/ticket/25672#comment:2 | #25672
 comment 2]] I see:

 {{{
 [04-11 00:10:08] Torbutton INFO: tor SOCKS:
 https://dist.torproject.org/torbrowser/7.5.3/torbrowser-install-7.5.3_en-
 US.exe via
                        --unknown--:71e69d27f4adff41fb754a6dc960dfeb
 [04-11 00:10:08] Torbutton INFO: controlPort >> 650 STREAM 61 NEW 0
 dist.torproject.org:443 SOURCE_ADDR=127.0.0.1:46918 PURPOSE=USER
 [04-11 00:10:08] Torbutton INFO: controlPort >> 650 STREAM 61 SENTCONNECT
 36 dist.torproject.org:443
 [04-11 00:10:08] Torbutton INFO: controlPort >> 650 STREAM 61 REMAP 36
 38.229.72.17:443 SOURCE=EXIT
 [04-11 00:10:08] Torbutton INFO: controlPort >> 650 STREAM 61 SUCCEEDED 36
 38.229.72.17:443
 [04-11 00:10:09] Torbutton INFO: Component Load 0: New ExternalAppBlocker.
 [04-11 00:10:13] Torbutton INFO: controlPort >> 650 STREAM 60 CLOSED 36
 138.201.14.197:443 REASON=DONE
 [04-11 00:10:21] Torbutton INFO: controlPort >> 650 STREAM 61 CLOSED 36
 38.229.72.17:443 REASON=CONNRESET
 }}}

 The CONNRESET is when I click Cancel.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25770>
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