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

Sun Jun 8 20:48:37 UTC 2014

#12227: ASan stack-buffer-overflow in prune_v2_cipher_list  -- not exploitable
---------------------------+---------------------------
     Reporter:  starlight  |      Owner:
         Type:  defect     |     Status:  new
     Priority:  normal     |  Milestone:
    Component:  Tor        |    Version:  Tor: 0.2.4.22
   Resolution:             |   Keywords:
Actual Points:             |  Parent ID:
       Points:             |
---------------------------+---------------------------

Comment (by cypherpunks):

 Else you need to change all code, look at ssl23_put_cipher_by_char, ssl23
 requires not only 3 bytes but p[0] is '\0' for ssl3.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12227#comment:3>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online