Operating System:

[Win]

Published:

10 October 2007

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                          ESB-2007.0765 -- [Win]
       MS07-058 - Vulnerability in RPC Could Allow Denial of Service
                              10 October 2007

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              Windows Vista
                      Windows Server 2003
                      Windows XP
                      Windows 2000
Publisher:            Microsoft
Operating System:     Windows
Impact:               Denial of Service
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-2228

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

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Microsoft Security Bulletin MS07-058 - Important

Vulnerability in RPC Could Allow Denial of Service (933729)


Affected Software

   - Microsoft Windows 2000 Service Pack 4
   - Windows XP Service Pack 2
   - Windows XP Professional x64 Edition
   - Windows Server 2003 Service Pack 1 and Windows Server 2003 Service
     Pack 2
   - Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition
     Service Pack 2
   - Windows Server 2003 with SP1 for Itanium-based Systems and Windows
     Server 2003 with SP2 for Itanium-based Systems
   - Windows Vista
   - Windows Vista x64 Edition


Vulnerability Details

RPC Authentication Vulnerability Could Allow Denial of Service -
CVE-2007-2228

   A denial of service vulnerability exists in the remote procedure call
   (RPC) facility due to a failure in communicating with the NTLM security
   provider when performing authentication of RPC requests. An anonymous
   attacker could exploit the vulnerability by sending a specially crafted
   RPC authentication request to a computer over the network. An attacker
   who successfully exploited this vulnerability could cause the computer
   to stop responding and automatically restart.

Workarounds for RPC Authentication Vulnerability Could Allow Denial of
Service - CVE-2007-2228

   - Block the following at the firewall:
     - UDP ports 135, 137, 138, and 445, and TCP ports 135, 139, 445, and 593
     - All unsolicited inbound traffic on ports greater than 1024
     - Any other specifically configured RPC port

   - To help protect from network-based attempts to exploit this
     vulnerability, use a personal firewall, such as Windows Firewall,
     which is included with Windows XP and with Windows Server 2003.

   - To help protect from network-based attempts to exploit this
     vulnerability, enable advanced TCP/IP filtering on systems that
     support this feature.

   - To help protect from network-based attempts to exploit this
     vulnerability, block the affected ports by using IPSec on the affected
     systems.


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

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