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              AUSCERT External Security Bulletin Redistribution
                             
           ESB-1999.180 -- Microsoft Security Bulletin (MS99-052)
        Patch Available for "Legacy Credential Caching" Vulnerability
                              30 November 1999

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Microsoft Corporation has released the following security bulletin
concerning a vulnerability in Windows 95/98's caching of network security
credentials.

A malicious user may exploit this vulnerability to obtain the last user's
network credentials, so long as the malicious user has physical access to 
the user's machine and the machine has not been rebooted since the last
networking session.

This vulnerability may allow a local user to gain privileged access on
other systems.

A patch has been provided by Microsoft to eliminate this vulnerability:

       http://www.microsoft.com/Security/Bulletins/MS99-052.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 made 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)

A list of FIRST Team Contact Information can be retrieved from:

	http://www.first.org/team-info/


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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