[tor-bugs] #23214 [Applications/Tor Browser]: Defend against stack overflow due to overly deep nested (unclosed) XML tags

Tor Bug Tracker & Wiki blackhole at torproject.org
Fri Aug 11 12:11:07 UTC 2017


#23214: Defend against stack overflow due to overly deep nested (unclosed) XML tags
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     Reporter:  gk                        |      Owner:  tbb-team
         Type:  defect                    |     Status:  new
     Priority:  Medium                    |  Milestone:
    Component:  Applications/Tor Browser  |    Version:
     Severity:  Normal                    |   Keywords:  tbb-crash
Actual Points:                            |  Parent ID:
       Points:                            |   Reviewer:
      Sponsor:                            |
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 There are several ways to get Tor Browser crashed due to missing
 mitigations while dealing with overly deep nested XML tags (see:
 https://bugzilla.mozilla.org/show_bug.cgi?id=485941 for an example). For
 Mozilla this is just annoying but depending on the circumstances we might
 come to a different conclusion due to our different threat model.

 We should try to come up with something that handles those cases more
 gracefully and in a less dangerous way.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23214>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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