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                                   CERT-Renater

                        Note d'Information No. 2009/VULN357
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DATE                      : 08/09/2009

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Windows Vista, Windows Server 2008 running
                               Wireless LAN AutoConfig Service.

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KB970710
http://www.microsoft.com/technet/security/Bulletin/MS09-049.mspx
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 Security Bulletin MS09-049 - Critical

Vulnerability in Wireless LAN AutoConfig Service Could Allow Remote Code
Execution (970710)

  Published: September 08, 2009

  Version: 1.0

General Information

Executive Summary

  This security update resolves a privately reported vulnerability in Wireless
  LAN AutoConfig Service. The vulnerability could allow remote code execution
  if a client or server with a wireless network interface enabled receives
  specially crafted wireless frames. Systems without a wireless card enabled
  are not at risk from this vulnerability.

  This security update is rated Critical for supported editions of Windows
  Vista and Important for supported editions of Windows Server 2008. For more
  information, see the subsection, Affected and Non-Affected Software, in this
  section.

  The security update addresses the vulnerability by extending the Wireless
  LAN AutoConfig service to properly validate wireless frames prior to
  processing them. For more information about the vulnerability, see the
  Frequently Asked Questions (FAQ) subsection for the specific vulnerability
  entry under the next section, Vulnerability Information.

  Recommendation. The majority of customers have automatic updating enabled
  and will not need to take any action because this security update will be
  downloaded and installed automatically. Customers who have not enabled
  automatic updating need to check for updates and install this update manually.
  For information about specific configuration options in automatic updating,
  see Microsoft Knowledge Base Article 294871.

  For administrators and enterprise installations, or end users who want to
  install this security update manually, Microsoft recommends that customers
  apply the update immediately using update management software, or by checking
  for updates using the Microsoft Update service.

  See also the section, Detection and Deployment Tools and Guidance, later in
  this bulletin.

  Known Issues. None

Affected Software

  Windows Vista, Windows Vista Service Pack 1,
  and Windows Vista Service Pack 2

  Windows Vista x64 Edition, Windows Vista x64 Edition Service Pack 1,
  and Windows Vista x64 Edition Service Pack 2

  Windows Server 2008 for 32-bit Systems
  and Windows Server 2008 for 32-bit Systems Service Pack 2

  Windows Server 2008 for x64-based Systems
  and Windows Server 2008 for x64-based Systems Service Pack 2

Vulnerability Information
	
Wireless Frame Parsing Remote Code Execution Vulnerability - CVE-2009-1132

  A remote code execution vulnerability exists in the way that the
  Wireless LAN AutoConfig Service (wlansvc) parses specific frames
  received on the wireless network. This vulnerability could allow remote
  code execution if a client or server with a wireless network interface
  enabled receives specially crafted wireless frames. If a user is logged
  on with administrative user rights, an attacker who successfully
  exploited this vulnerability could take complete control of an affected
  system. An attacker could then install programs; view, change, or delete
  data; or create new accounts with full user rights.

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