Re: Telnetd AYT overflow scanner and linux telnet 0.17

From: H D Moore (hdmat_private)
Date: Tue Jul 31 2001 - 11:20:54 PDT

  • Next message: H D Moore: "Re: Telnetd AYT overflow scanner and linux telnet 0.17"

    Two minor corrections, the caffiene hadn't kicked in yet:
    
    On Tuesday 31 July 2001 01:02 pm, H D Moore wrote:
    > Linux telnetd is very buggy, whether or not it is exploitable is a
    > different story.  By sending many AYT's, you overwrite the netoprintf
    > variable with the string "\r\n[ hostname : yes]\r\n", which will eventually
    
    netoprintf is the function, netobuf is the buffer we smash.
    
    > How to calculate the number of bytes each AYT request causes to be written
    > to netoprintf:
    
    Same as above.
    
    -HD
    



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