Re: 'cross site scripting' CERT advisory and MS

From: Dustin Miller (dmillerat_private)
Date: Wed Feb 09 2000 - 03:26:49 PST

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    First of all, why'd you post this as HTML?  :)
    
    Secondly...  OE uses the Internet Explorer embedded ActiveX control in its m
    essage view window.  There's nothing you can do about that.
    
    Thirdly, an "HTML TO TEXT" converter is damn simple, and it would be TRIVIAL
    for Microsoft to make a simple one that just tosses out HTML tags, converts
    & to & and other HTML character entities to their respective ASCII chara
    cters and displays what's left.  Simple.  Painless.  Very little system "per
    formance hit".  Shame on them for writing an OS that CHOKES a computer's pro
    cessor and disk subsystem every time it opens Microsoft PowerPoint, and yet
    won't remove the IE control from OE upon request because it would be high "o
    verhead" and would "seriously hinder performance."
    
    How many people honestly think that some simple string processing will serio
    usly hinder performance, especially when this processing could be written to
    occur automatically as you are receiving messages, or only upon display?  Ba
    h!
    
    Dustin
    
    -----Original Message-----
    From: Bugtraq List [mailto:BUGTRAQat_private]On Behalf Of Eric Lecht
    Sent: Tuesday, February 08, 2000 7:39 AM
    To: BUGTRAQat_private
    Subject: 'cross site scripting' CERT advisory and MS
    
    
    Mark Slemko wrote:
    
    >>>2. Do not use a mail reader that forces you to display HTML messages.
    Using something like Outlook Express is very dangerous, since it
    means that you can be exploited if an email message arrives in your
    inbox and is displayed.  If you do use something like Outlook
    Express, be sure to configure it to disable scripting and make it
    as restrictive as possible.  Unfortunately, in the case of Outlook
    Express, this doesn't appear to be enough since I can't find any
    setting that will stop things like IFRAMEs from automatically
    loading, which are enough to make you vulnerable in many situations.
    Hopefully I'm missing something.<<<
    
    I wrote Microsoft a few days ago asking about shutting off HTML in Outlook E
    xpress, and here's what they wrote back:
    
    >>>>CASE_ID_NUM: SRZ000203000844
    MESSAGE:
    ********************** The message for you follows ************************
    Eric,
    
    I am afraid that inbound functionality for turning off html code is not
    possible in Internet Explorer as default.
    
    There is no pure "html" to "text" converter or selection within the
    application. It is unfortunate, I know, and I am sorry to have to deliver
    this message to you.
    
    I have however, passed your issue along to members of our development staff
    for that feature to be included in future revisions. The very question you
    ask is being considered at the most critical levels of our development
    process.
    
    The current conventional logic behind why we do not have a html to text
    converter is the overhead that would be placed on the machine, browser and
    email app that would seriously hinder performance.
    
    I appreciate the your time and patience while I have researched your
    question. I will be archiving this issue as unresolved. If you have any
    questions, please contact me.
    
    Thank you in advance,
    harryb
    
    Harry Bynum
    North Carolina Desktop Premier Support Team
    IE,IEAK,Win 9x/3.x!
    Phone:704-XXX-XXXX
    Email: hXXXat_private
    
    Powering Up the Desktop! <<<<
    
    The gentleman who responded to my query did so promptly, and from what I gat
    her from his wording (I am afraid that inbound functionality for turning off
    html code is not possible in Internet Explorer as default.) I would hazard t
    hat OE is inexorably tied to IE (ok, i'm not a programmer, just hazarding a
    guess...) just like IE has deep hooks into Windows itself, hence the inabili
    ty to _disable_ reading html in basic email. In fact I had limited my inquir
    y to turning HTML off in OE.
    
    FYI....
    
    Eric Lecht
    Network Analyst
    State of Idaho
    Dept. of Administration
    
    "I do what I can, I work in the dark".
    



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