[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Re: Oh those XML Viruses


Re:  Oh those XML Viruses
Bullard, Claude L (Len) wrote:
> ...
> 
> 1. Why have the scanner vendors taken until now to figure this out?
> 2. Why single out Microsoft?  

I'm curious what other XML vocabularies you know of that transport 
Turing-complete macros with complete access to every COM object on the 
system?

The only one I know if is XHTML, and people expect the browser to 
enforce its sandbox, not a virus checker.

> Tit:  Scanning the whole file slows us down.  
> Tat:  Viruses take you all the way out.  

Non sequiter. Let me try an analogous argument: "removing the steering 
wheel from the car slows us down." "Theft takes the whole car out." 
Well, why not just put a lock on? Efficiency and security are not 
necessarily at odds.

> Tit:  Microsoft should behave as they ought.
> Tat:  So should scanner software.  Just because 
>       the header says the macros are "here" doesn't 
>       mean another one isn't "there".  One might 
>       want to validate too.

A macro that cannot be executed by the software is harmless. It is just 
data.

> Tit:  It's Microsoft's fault.
> Tat:  Microsoft didn't invent XML. 
>       This is a problem for any XML that 
>       can contain a macro and any system 
>       that doesn't sandbox it.

You act as if there is a long list of such systems.

> Gee.  What will Open Office do?

It doesn't practically matter as a performance issue. The volume of data 
flowing across the firewall in open office format will be a tiny 
fraction of the Office data.

I would hope that OpenOffice has a macro sandbox (or separates macros 
from documents), but I don't know for sure.

  Paul Prescod


PURCHASE STYLUS STUDIO ONLINE TODAY!

Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
Email
First Name
Last Name
Company
Subscribe in XML format
RSS 2.0
Atom 0.3
 

Stylus Studio has published XML-DEV in RSS and ATOM formats, enabling users to easily subcribe to the list from their preferred news reader application.


Stylus Studio Sponsored Links are added links designed to provide related and additional information to the visitors of this website. they were not included by the author in the initial post. To view the content without the Sponsor Links please click here.

Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.