[tor-bugs] #28202 [Core Tor/Tor]: Bad end-of-string check in get_next_token (CID various)

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#28202: Bad end-of-string check in get_next_token (CID various)
-------------------------+-------------------------------------------------
     Reporter:  nickm    |      Owner:  (none)
         Type:  defect   |     Status:  new
     Priority:  Medium   |  Milestone:  Tor: 0.3.5.x-final
    Component:  Core     |    Version:
  Tor/Tor                |   Keywords:  029-backport 033-backport
     Severity:  Normal   |  034-backport
Actual Points:           |  Parent ID:
       Points:           |   Reviewer:
      Sponsor:           |
-------------------------+-------------------------------------------------
 There's a coverity warning about an overflow in test_parsecommmon.  I
 think it is happening because of this code:
 {{{
  *s + 16 >= eol
 }}}

 That's the wrong way to test for end-of-string, since C says that *s+16 is
 undefined behavior if the resulting pointer would be more than 1 off the
 end of the allocated byte array.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28202>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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