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Category:   OS (Microsoft)  >   Rpc Vendors:   Microsoft
Windows RPC NTLMSSP Authentication Flaw Lets Remote Users Deny Service
SecurityTracker Alert ID:  1018787
SecurityTracker URL:  http://securitytracker.com/id/1018787
CVE Reference:   CVE-2007-2228   (Links to External Site)
Date:  Oct 9 2007
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2000 SP4, 2003 SP2, XP SP2, Vista
Description:   A vulnerability was reported in Microsoft Windows. A remote user can cause denial of service conditions.

The Windows RPC code does not properly communicate with the NTLM security provider when performing authentication of RPC requests. A remote user can send specially crafted RPC data using the NTLMSSP authentication type to cause the target system to become unresponsive and then restart.

Zero Day Initiative reported this vulnerability.

Impact:   A remote user can cause the target system to restart.
Solution:   The vendor has issued the following fixes:

Microsoft Windows 2000 Service Pack 4:

http://www.microsoft.com/downloads/details.aspx?FamilyId=6c7fb9a8-1d8d-4307-b5c6-bc6c28ee09de

Windows XP Service Pack 2:

http://www.microsoft.com/downloads/details.aspx?FamilyId=1fee539c-ab86-4298-b6f4-22ce31ee7b8b

Windows XP Professional x64 Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=ac7bd100-0a03-426b-adc8-0516c602a280

Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2:

http://www.microsoft.com/downloads/details.aspx?FamilyId=011593a0-f37e-4578-bee1-a985639b521b

Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2:

http://www.microsoft.com/downloads/details.aspx?FamilyId=e9bb8df5-f39e-4473-9d0c-e84430c7f859

Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems:

http://www.microsoft.com/downloads/details.aspx?FamilyId=492ae87c-047c-45c1-ad04-ee36352de85b

Windows Vista:

http://www.microsoft.com/downloads/details.aspx?FamilyId=ceca7f8c-7b56-48fc-8c17-87ffadf25629

Windows Vista x64 Edition:

http://www.microsoft.com/downloads/details.aspx?FamilyId=7625f5a4-2921-41ce-986d-4cc0c264135c

A restart is required.

The Microsoft advisory is available at:

http://www.microsoft.com/technet/security/bulletin/ms07-058.mspx

Vendor URL:  www.microsoft.com/technet/security/bulletin/ms07-058.mspx (Links to External Site)
Cause:   Input validation error

Message History:   None.


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