[tor-bugs] #13893 [Tor Browser]: Torbrowser 4.X.Y crashes on start when using MS EMET 5.x

Tor Bug Tracker & Wiki blackhole at torproject.org
Sat Dec 26 19:46:58 UTC 2015


#13893: Torbrowser 4.X.Y crashes on start when using MS EMET 5.x
-------------------------------------------------+-------------------------
 Reporter:  Diapolo                              |          Owner:  gk
     Type:  defect                               |         Status:
 Priority:  High                                 |  assigned
Component:  Tor Browser                          |      Milestone:
 Severity:  Normal                               |        Version:
 Keywords:  tbb-usability-stoppoint-app,         |     Resolution:
  TorBrowserTeam201512, GeorgKoppen201512        |  Actual Points:
Parent ID:                                       |         Points:
  Sponsor:  SponsorU                             |
-------------------------------------------------+-------------------------

Comment (by cypherpunks_backup):

 EMET for sure dislikes latest call of [https://mxr.mozilla.org/mozilla-
 esr38/source/xpcom/build/nsWindowsDllInterceptor.h#657 VirtualProtectEx],
 made by next opcodes:
 {{{
 call    VirtualProtectEx
 sub     esp, 14h
 jmp     end

 ...

 end:
 add     esp, 4Ch
 pop     ebx
 pop     esi
 pop     edi
 pop     ebp
 rep     retn
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13893#comment:18>
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