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Category:   OS (Microsoft)  >   Rpc Vendors:   Microsoft
Microsoft RPC Mutual Authentication Bug Lets Remote Users Spoof Other Systems
SecurityTracker Alert ID:  1016289
SecurityTracker URL:  http://securitytracker.com/id/1016289
CVE Reference:   CVE-2006-2380   (Links to External Site)
Date:  Jun 13 2006
Impact:   Host/resource access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2000 SP4
Description:   A vulnerability was reported in Microsoft's RPC Mutual Authentication on Windows 2000. A remote user could spoof a valid RPC server.

The system does not properly validate the identity of the RPC server when using mutual authentication over a Secure Socket Layer (SSL) connection. A remote user may be able to impersonate a valid RPC server.

Microsoft credits Michael Colson of Symantec with reporting this vulnerability.

Impact:   A remote user can impersonate a valid server.
Solution:   The vendor has issued the following fix:

Microsoft Windows 2000 Service Pack 4:

http://www.microsoft.com/downloads/details.aspx?FamilyId=5089d956-7d8d-4241-9ca2-107ce4f8c093

The vendor's advisory is available at:

http://www.microsoft.com/technet/security/bulletin/ms06-031.mspx

Vendor URL:  www.microsoft.com/technet/security/bulletin/ms06-031.mspx (Links to External Site)
Cause:   Authentication error

Message History:   None.


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