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NTSecAdvice Archives: Re-release of Microsoft Security Bulletin

Re-release of Microsoft Security Bulletin MS99-042

Mark (markNTSHOP.NET)
Thu, 4 Nov 1999 16:02:00 -0700

-----Original Message-----
From: Microsoft Product Security Notification Service
Microsoft Product Security
Sent: Thursday, November 04, 1999 2:23 PM
Subject: Re-release of Microsoft Security Bulletin MS99-042

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

On October 15, 1999, Microsoft released Security Bulletin MS99-042, which
discussed the availability of a patch that eliminates the "IFRAME
ExecCommand" vulnerability in Microsoft(r) Internet Explorer 4.01 and 5.0.
However, we subsequently determined that the patch contained a regression
error. While the patch did provide protection against the "IFRAME
ExecCommand" vulnerability, it re-exposed a previously-patched security
vulnerability. We have corrected the regression error and re-released the

We have updated the security bulletin and FAQ, and it is available at
http://www.microsoft.com/security/bulletins/ms99-042.asp. The updated
bulletin contains information on the vulnerability, the regression error,
and the updated patch. Please note that the regression error only affected
the IE 5.0 version of the patch; the patch for IE 4.01 was unaffected, and
customers who applied it do not need to take any action.

We apologize for any inconvenience caused by this incident, and are working
to improve our process in order to prevent similar incidents in the future.

The Microsoft Security Response Team

You have received this e-mail bulletin as a result of your registration
to the Microsoft Product Security Notification Service. You may
unsubscribe from this e-mail notification service at any time by sending
The subject line and message body are not used in processing the request,
and can be anything you like.

For more information on the Microsoft Security Notification Service
please visit http://www.microsoft.com/security/services/bulletin.asp. For
security-related information about Microsoft products, please visit the
Microsoft Security Advisor web site at http://www.microsoft.com/security.

This archive was generated by hypermail 2.0b3 on Thu Nov 04 1999 - 17:41:24 CST