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

#12227: ASan stack-buffer-overflow in prune_v2_cipher_list  -- not exploitable
---------------------------+-------------------------------------
     Reporter:  starlight  |      Owner:
         Type:  defect     |     Status:  needs_revision
     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:             |
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Comment (by starlight):

 Replying to [comment:4 nickm]:
 > As for the patch, why can't it just be. . .

 It can.  But replaced htons() because it is
 logically incompatible with the SSLv2
 char cipher ID construction.  Was mislead
 at first and thought changing it to

    set_uint32(cipherid, htonl(*inp))

 would work but this is incorrect.  Never
 liked those BSD byte-order functions
 and don't use them myself.  The proposed
 patch is clearer.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12227#comment:11>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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