Patch Available for "Server-side Page Reference Redirect" Vulnerability

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              AUSCERT External Security Bulletin Redistribution
                             
           ESB-1999.187 -- Microsoft Security Bulletin (MS99-050)
   Patch Available for "Server-side Page Reference Redirect" Vulnerability
                              10 December 1999

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Microsoft Corporation has released the following security bulletin
concerning a vulnerability in the security model for server-side redirects 
used by Internet Explorer 4.01, 5 and 5.01.  The vulnerability may be 
exploited when a user visits a website where a maliciously crafted web page 
is hosted.  The vulnerability may allow a malicious web site operator to 
view files on the computer of a visiting user's computer:

       http://www.microsoft.com/Security/Bulletins/MS99-050.asp

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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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