---------- Forwarded message ----------
Date: Thu, 25 Jan 2001 19:14:17 -0800
From: Microsoft Product Security <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: Microsoft Security Bulletin MS01-002 (version 2.0)
The following is a Security Bulletin from the Microsoft Product Security
Notification Service.
Please do not reply to this message, as it was sent from an unattended
mailbox.
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Title: PowerPoint File Parsing Vulnerability
Date: January 22, 2001
Revised: January 25, 2001 (Version 2.0)
Software: PowerPoint 2000
Impact: Execution of Arbitrary Code
Bulletin: MS01-002
Microsoft encourages customers to review the Security Bulletin at:
http://www.microsoft.com/technet/security/bulletin/ms01-002.asp
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Revisions:
==========
On January 22, Microsoft released the original version of this
bulletin, to advise customers of the availability of a patch that
eliminates a security vulnerability in Microsoft PowerPoint 2000.
However, the originally released patch did not include the entirety
of the fixes related to this vulnerability. An updated patch has been
made available that corrects the orginally reported vulnerability.
Customers who downloaded and installed the original patch should
download and install the updated patch. Instructions for determining
the current version of the patch and for installing the updated patch
are available via the Patch Availability URL in the security
bulletin referenced above.
The bulletin has also been updated to more accurately reflect the
conditions under which this vulnerability may be exploited.
Issue:
======
A parsing routine that is executed when PowerPoint 2000 opens files
contains an unchecked buffer. If an attacker inserted specially
chosen data into a PowerPoint file and could entice another user into
opening the file on his machine, the data would overrun the buffer,
causing either of two effects. In the less serious case, overrunning
the data would cause PowerPoint to fail, but wouldn't have any other
effect. In the more serious case, overrunning the buffer could allow
the attacker to cause code of her choice to run on the user's
machine. The code could take any action that the user himself could
take on the machine. Typically, this would enable the attacker's code
to add, change or delete data, communicate with a remote server, or
take other actions.
Mitigating Factors:
===================
- The user would need to be enticed into either opening the
malformed PowerPoint 2000 file, visiting a malicious website,
or viewing a specially crafted html email message.
Patch Availability:
===================
- A patch is available to fix this vulnerability. Please read
Security Bulletin MS01-002 at:
http://www.microsoft.com/technet/security/bulletin/ms01-002.asp
for information on obtaining this patch.
Acknowledgment:
===============
- Dave Aitel and Frank Swiderski of @Stake (http://www.atstake.com)
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