Tool Available for "OffloadModExpo Registry Permissions" Vulnerability

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              AUSCERT External Security Bulletin Redistribution

           ESB-2000.069 -- Microsoft Security Bulletin (MS00-024)
   Tool Available for "OffloadModExpo Registry Permissions" Vulnerability
                                17 April 2000

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Microsoft Corporation has released a tool that installs tighter permissions 
on a Windows NT 4.0 registry key. The default permissions may allow a
malicious user, who can interactively log onto a Windows NT 4.0 machine,
to compromise the cryptographic keys of other users who subsequently log 
onto the same machine:

       http://www.microsoft.com/technet/security/bulletin/ms00-024.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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