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Title: Flaw in Windows Script Engine Could Allow Code
Execution (814078)
Date: 19 March 2003
Software: Microsoft Windows 98
Microsoft Windows 98 Second Edition
Microsoft Windows Me
Microsoft Windows NT 4.0
Microsoft Windows NT 4.0 Terminal Server Edition
Microsoft Windows 2000
Microsoft Windows XP
Impact: Run Code of Attacker's Choice
Max Risk: Critical
Bulletin: MS03-008
Microsoft encourages customers to review the Security Bulletins at:
http://www.microsoft.com/technet/security/bulletin/MS03-008.asp
http://www.microsoft.com/security/security_bulletins/ms03-008.asp
The Windows Script Engine provides Windows operating systems with
the ability to execute script code. Script code can be used to add
functionality to web pages, or to automate tasks within the
operating system or within a program. Script code can be written in
several different scripting languages, such as Visual Basic Script,
or JScript.
A flaw exists in the way by which the Windows Script Engine for
JScript processes information. An attacker could exploit the
vulnerability by constructing a web page that, when visited by the
user, would execute code of the attacker's choice with the user's
privileges. The web page could be hosted on a web site, or sent
directly to the user in email.
Although Microsoft has supplied a patch for this vulnerability and
recommends all affected customers install the patch immediately,
additional preventive measures have been provided that customers
can use to help block the exploitation of this vulnerability while
they are assessing the impact and compatibility of the patch. These
temporary workarounds are discussed in the "Workarounds" section in
the Frequently Asked Questions section of the security bulletin for
this release.
http://www.microsoft.com/technet/security/bulletin/ms03-008.asp
http://www.microsoft.com/security/security_bulletins/ms03-008.asp
for information on obtaining this patch.
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE
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OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.
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