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AA-2006.0079                  AUSCERT Advisory

                                   [Win]
          Microsoft Security Bulletin MS06-063: Vulnerability in
               Server Service Could Allow Denial of Service
                              11 October 2006
- ---------------------------------------------------------------------------

        AusCERT Advisory Summary
        ------------------------

Product:              Server Service
Operating System:     Windows
Impact:               Denial of Service
Access:               Remote/Unauthenticated
CVE Names:            CVE-2006-4696 CVE-2006-3942

Original Bulletin:    
  http://www.microsoft.com/technet/security/bulletin/ms06-063.mspx

Comment: As Microsoft note in their advisory, following best practice of
         blocking UDP ports 135, 137, 138, and 445, and TCP ports 135, 139,
         445, and 593 at the network perimeter is a good standard mitigation in
         addition to applying the supplied patches.

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MS06-063 - Vulnerability in Server Service Could Allow Denial of Service

Affected Software: 

  - Microsoft Windows 2000 Service Pack 4

  - Microsoft Windows XP Service Pack 1 and Microsoft Windows XP Service Pack 2

  - Microsoft Windows XP Professional x64 Edition

  - Microsoft Windows Server 2003 and Microsoft Windows Server 2003 Service
    Pack 1

  - Microsoft Windows Server 2003 for Itanium-based Systems and Microsoft
    Windows Server 2003 with SP1 for Itanium-based Systems

  - Microsoft Windows Server 2003 x64 Edition

- From Microsoft Security Bulletin MS06-063:

  Vulnerability Details:

  Server Service Denial of Service Vulnerability - CVE-2006-3942:

  A denial of service vulnerability exists in the Server service because of the
  way it handles certain network messages. An attacker could exploit the 
  vulnerability by sending a specially crafted network message to a computer 
  running the Server service. An attacker who successfully exploited this 
  vulnerability could cause the computer to stop responding.

  SMB Rename Vulnerability - CVE-2006-4696:

  A remote code execution vulnerability exists in the Server service because of
  the way it handles certain network messages. An attacker could exploit the 
  vulnerability sending a specially crafted network message to a computer
  running the Server service as an authenticated user. An attacker who 
  successfully exploited this vulnerability could take complete control of the
  affected system.

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This security bulletin is provided as a service to AusCERT's members.  As
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        http://www.auscert.org.au/render.html?cid=1980

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

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 member emergencies only.
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