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              AUSCERT External Security Bulletin Redistribution
                             
           ESB-1999.174 --  Microsoft Security Bulletin (MS99-049)
             Patch Available for "File Access URL" Vulnerability
                              15 November 1999

===========================================================================

Microsoft Corporation has released the following security bulletin
concerning a buffer overrun vulnerability in file access URLs on Windows
95/98.  The vulnerability may allow a maliciously crafted URL to crash the 
local machine or execute arbitrary code as the user running the browser or 
email reader.

This vulnerability may be exploited when a user views a maliciously
crafted web page or email.  This vulnerability may allow remote users to
gain privileged access or to perform a Denial of Service Attack.

The patch is available from:

       http://www.microsoft.com/security/bulletins/ms99-049.asp

===========================================================================

This security bulletin is provided as a service to AusCERT's members.
As AusCERT did not write the document referenced above, AusCERT has
had no control over its content.  The decision to use any or all
of this information is the responsibility of each user or organisation,
and should be done so in accordance with site policies and procedures.

If you have any questions or need further information, please contact 
Microsoft Corporation directly.

Previous advisories and external security bulletins can be retrieved from:

	http://www.auscert.org.au/Information/advisories.html

If you believe that your system has been compromised, contact AusCERT or
your representative in FIRST (Forum of Incident Response and Security
Teams).

Internet Email: auscert@auscert.org.au
Facsimile:	(07) 3365 7031
Telephone:	(07) 3365 4417 (International: +61 7 3365 4417)
		AusCERT personnel answer during Queensland business hours
		which are GMT+10:00 (AEST).
		On call after hours for emergencies.

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