[tor-bugs] #12227 [Tor]: ASan stack-buffer-overflow in prune_v2_cipher_list -- not exploitable

Tor Bug Tracker & Wiki blackhole at torproject.org
Mon Jun 9 02:40:56 UTC 2014


#12227: ASan stack-buffer-overflow in prune_v2_cipher_list  -- not exploitable
---------------------------+-------------------------------------
     Reporter:  starlight  |      Owner:
         Type:  defect     |     Status:  needs_review
     Priority:  normal     |  Milestone:  Tor: 0.2.5.x-final
    Component:  Tor        |    Version:  Tor: 0.2.4.22
   Resolution:             |   Keywords:  tor-client 024-backport
Actual Points:             |  Parent ID:
       Points:             |
---------------------------+-------------------------------------

Comment (by cypherpunks):

 get_cipher_by_char for SSLv23 is wrong and shouldn't be used. It messes
 bytes and the same bytes shifts differently inside of cipher id.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12227#comment:5>
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